Eldon Hazlet is the camping capital of the Illinois state park system - and it sits on the west shore of Carlyle Lake, the largest lake in Illinois: 26,000 acres of open water stretching toward a horizon most people don't associate with the Prairie State. An hour east of St. Louis off US-50 near the town of Carlyle, the recreation area spreads nearly 3,000 acres of shoreline woods and lawns around a campground of more than 320 electric sites plus walk-in tent loops and camper cabins - the largest campground in any Illinois state park. For a family reunion, that scale is the whole pitch: where most parks make you fight for six adjacent sites, Hazlet can absorb a forty-RV family with room for the cousins' tents in between, all of it reservable through the ExploreMoreIL system, all of it behind a gate that - like every Illinois state park - costs nothing to enter.
Carlyle Lake gives the reunion its personality. The big water is southern Illinois's sailing capital - a nationally known inland sailing scene races here all season, and watching the weekend regattas drift past is free entertainment from your campsite chair. Power boaters, tubers, and anglers share the acreage without crowding: the lake's flooded timber and riprap produce white bass runs, crappie by the cooler-full, catfish, and one of the region's best sauger fisheries below the dam. Marinas at the lake rent pontoons and slips; the park's own ramps launch everything else. On shore, Hazlet adds a swimming-friendly lakeshore, the Cherokee hiking trail through lakeside woods, summer interpretive programs, and sunset views across water wide enough to swallow the sun whole.
The logistics are small-town simple. Carlyle - a friendly county seat ten minutes south - covers groceries, bait, hardware, and Dairy Queen runs, and its historic General Dean Suspension Bridge over the Kaskaskia makes a great evening stroll. St. Louis relatives arrive in an hour; Springfield, Champaign, and Evansville folks converge in about two. Reserve a lakeside picnic shelter for the all-hands cookout, book the campsite block the day your window opens, rent two pontoons and a stack of crappie rods, and Eldon Hazlet delivers the biggest-sky, biggest-water reunion Illinois can offer - at state-park prices.
Where it is
🚀 With Reunly
Planning a reunion at Eldon Hazlet State Recreation Area?
Reunly turns this page into a real workspace — pick a date, lock in lodging, send invites, take RSVPs, and split the budget across families. Free to start, no card required.
Things to do (with the family)
Hand-curated. Every entry links to its official source so you can plan without guessing.
Pontoon day on Carlyle Lake
Rent pontoons from the lake's marinas and spread out across 26,000 acres - Illinois's largest lake absorbs a family flotilla without ever feeling crowded. Raft up in a quiet cove for the floating lunch.
Official source ↗Watch the sailboat regattas
Carlyle Lake is southern Illinois's sailing capital, home to an active racing scene - weekend regattas parade past the Hazlet shoreline all season, free entertainment from a campsite chair.
Official source ↗Crappie and white bass fishing
The lake's flooded timber and brush piles produce crappie by the cooler-full plus seasonal white bass runs, catfish, and largemouth - the fish-fry engine of a Hazlet reunion. Boat and bank options abound.
Official source ↗Sauger run below the dam
Fall and winter sauger fishing in the Kaskaskia tailwater below Carlyle Dam is regionally famous - the serious-angler excursion 15 minutes from camp.
Official source ↗Camp the biggest campground in Illinois
More than 320 electric sites, tent loops, showers, and camper cabins along the shoreline - large families book entire rows and turn a loop into the reunion compound. Reserve via ExploreMoreIL.
Official source ↗Swim and beach afternoons
Designated swimming areas on Carlyle Lake (including the Corps-run beaches nearby) give the kids their splash fix - shallow entries and sand make it toddler-manageable with supervision.
Official source ↗Hike the Cherokee Trail
The park's lakeside trail winds through shoreline woods with water views and heron sightings - flat, shaded, and right out of the campground: the before-breakfast walk.
Official source ↗Sunset watching across the big water
Carlyle's width means the sun sets over open water - a nightly all-family ritual from the west-shore lawns that costs nothing and photographs like the ocean.
Official source ↗Winter eagle & waterfowl watching
The lake sits on the Mississippi Flyway - late fall rafts of waterfowl number in the tens of thousands, and wintering bald eagles work the dam tailwater. Bring the scopes.
Official source ↗General Dean Suspension Bridge (Carlyle)
A restored 1859 pedestrian suspension bridge over the Kaskaskia River in downtown Carlyle - a genuinely charming evening stroll and photo stop ten minutes from camp.
Official source ↗Carlyle town evening
The lakeside county seat covers groceries, bait, pizza, and the mandatory Dairy Queen run - plus lake-view dining near the dam for the night nobody cooks.
Official source ↗Day trip: Salem & the Lincoln Trail towns
The surrounding US-50 corridor offers small-town museums and history stops (William Jennings Bryan's birthplace at Salem among them) - low-key splinter trips for the history wing.
Official source ↗Find more things to do for your Eldon Hazlet State Recreation Area reunion
The picks above are general. Inside the Reunly app, Rosi tailors local activities, meals, and printables to your actual dates, group size, ages, and budget - and saves them straight to your reunion plan.
Where to hold your reunion near Eldon Hazlet State Recreation Area
Outdoor pavilions, county parks, fairgrounds, and event grounds within driving distance - places where your group can actually gather, not just visit.
Eldon Hazlet Campground - row blocks & camper cabins
⛺ CampgroundThe largest campground in the Illinois state park system - electric rows, tent loops, showers, and camper cabins along the Carlyle Lake shore. Adjacent-row blocks via ExploreMoreIL are the reunion superpower here.
Reserve / info ↗Eldon Hazlet - Lakeside Picnic Shelters
🏞 State ParkReservable shelters on the shoreline day-use lawns - the mess-hall anchor that keeps a 300-site campground reunion gathered in one place. Book through ExploreMoreIL.
Reserve / info ↗Carlyle Lake marinas - pontoon & slip rentals
📍 VenueMarina operations on the lake rent pontoons and fishing boats and hold group bookings - the floating wing of the reunion, one reservation per household cluster.
Reserve / info ↗Carlyle Lake Corps of Engineers day-use & beaches
📍 VenueThe Corps' Dam West/Dam East areas add sand beaches, additional shelters, and overflow camping - a second venue system ringing the same lake.
Reserve / info ↗Carlyle town venues & lake-view dining
🏛 Event CenterThe county seat's restaurants and community halls handle the dressed-up dinner or rain-plan banquet, with the historic suspension bridge as the after-dinner stroll.
Reserve / info ↗South Shore & Coles Creek recreation areas
⛺ CampgroundAdditional Corps campgrounds around Carlyle Lake absorb mega-reunions that outgrow even Hazlet - same water, same sunsets, coordinated by a short drive.
Reserve / info ↗👥 With Reunly
Save Eldon Hazlet State Recreation Area to a real reunion plan
Reunly turns this destination into a workspace — venue picks, guest list, RSVPs, budget split, and a day-of schedule everyone can see. Free to start.
Good for
- Big camping clans - the largest campground in the Illinois state park system
- St. Louis-area families wanting big water an hour from home
- Boating and fishing reunions (26,000 acres, marinas, famous crappie)
- Budget groups: free entry, cheap sites, rental boats by the day
- Sunset-and-campfire families who measure success in lawn chairs
Practical logistics
- Closest Airports
- St. Louis Lambert (STL) about 1 hr 15 min with nonstops from most major cities - the natural fly-in hub. Regional: MidAmerica St. Louis (BLV, Belleville) 40 min; Evansville (EVV) 2 hr.
- Drive Times
- St. Louis 1 hr · Belleville/Scott AFB 40 min · Springfield IL 1.5 hr · Champaign 2 hr · Evansville 2 hr · Chicago 4.5 hr. The park is 10 minutes north of US-50 at Carlyle.
- Group Lodging
- The park's 320+ site campground (electric, showers, camper cabins, tent loops) is the headline - reserve row blocks on ExploreMoreIL. Carlyle adds motels and lake-house rentals 10-15 minutes away; the Corps' Dam West area has more camping when Hazlet somehow fills.
- Rental Companies
- Carlyle Lake marinas rent pontoons and fishing boats by the day; Airbnb/Vrbo list lake houses and small-town homes around Carlyle sleeping 8-14. Book boats and cabins together, early, for summer weekends.
- House Size
- Lake-area rentals run $150-350/night for 3-4 BR; camper cabins and electric sites run a fraction of that. A 60-person camping reunion here can house everyone for less than one beach-house week costs elsewhere.
- Peak Season
- Memorial Day-Labor Day - summer weekends fill even 320 sites, and holiday weekends fill them fast. Reserve the block the day your ExploreMoreIL window opens.
- Shoulder Season
- September-October: warm water early, fall crappie and sauger, massive waterfowl rafts late - and the campground breathes again. April-May brings white bass runs and wildflower prairie edges.
- Restaurants
- Carlyle (10 min) covers pizza, diner plates, Dairy Queen, and lake-view dining near the dam. Breese and the US-50 towns add more; St. Louis-caliber restaurants stay an hour west - camp cooking is the culture here.
- Kid Friendly
- Built for it - swimming areas, pier fishing, campground bike loops, interpretive programs in summer, and a thousand lawn acres for whiffle ball. Big-lake boating means life jackets always and adult drivers only.
- Accessibility
- Accessible campsites, shower buildings, and day-use areas; several fishing and shoreline access points are level or paved. The Cherokee Trail is natural-surface but mostly flat. Confirm accessible camper-cabin availability on ExploreMoreIL.
- Weather Window
- May-September is water season (80s-90s°F, humid midsummer - the lake breeze helps). September water stays swimmable; October is gold and calm. Big open water kicks up real chop on windy days - pontoon captains watch forecasts.
- Park Fee
- Free - no entrance or parking fee at any Illinois state park. The largest lake in the state costs nothing to sit beside.
- Official Site
- https://dnr.illinois.gov/parks/park.eldonhazlet.html
When to go
June through August is the full package - swimming, pontoons, regattas gliding by, and the campground alive with bikes and firelight - just book the site block months out. September is the insider month: the water holds its warmth, crappie fishing sharpens, sunsets come earlier for the kids, and the reserved-row competition disappears. May offers white bass runs and mild prairie-green weekends. Late fall trades swimsuits for spotting scopes as tens of thousands of waterfowl raft up on the flyway.
Best for your group size
Small group · 10–25
Groups of 10-25: one campsite row or a camper-cabin cluster, one pontoon, and the pier - Hazlet at this size barely requires planning.
Medium group · 25–60
Groups of 25-60: block a full row plus cabins, reserve the big lakeside shelter for meals, and run a two-pontoon fleet with posted shifts.
Large group · 60+
Groups of 60-150: this is the Illinois park that actually fits you - multiple adjacent rows, the largest shelter as mess hall, a marina fleet reservation, and a catered Saturday dinner from Carlyle to spell the grill crew.
💰 With Reunly
Split the cost across families fairly
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Sample 3-day Eldon Hazlet / Carlyle Lake reunion
A starter agenda you can copy into Reunly's Schedule and customize for your group.
Day 1 - Arrive & Make Camp
- Afternoon check-ins down the reserved row; camper cabins claimed by seniority
- 4 PM Carlyle provisioning run - groceries, ice, bait, DQ reconnaissance
- 6 PM first cookout at the lakeside shelter; weekend roster posted
- 7:45 PM inaugural sunset session on the west-shore lawn
Day 2 - Big Water Day
- 5:45 AM crappie boats slip out to the timber
- 9 AM pontoon fleet launches; kid pier hour begins at the day-use dock
- 12 PM raft-up cove lunch on the water; shore crew picnics at the shelter
- 2 PM swim-beach afternoon; regatta watching from the shade
- 6 PM fish fry at the shelter - crappie, hushpuppies, derby awards
- 9 PM campfire circle: one fire ring to rule them all
Day 3 - Slow Morning & Send-off
- 7 AM last-cast delegation works the bank; Cherokee Trail walkers loop the shore
- 9 AM pancake breakfast and camp teardown in shifts
- 10:30 AM group photo on the shoreline, lake horizon behind
- 11:30 AM optional Carlyle stop: suspension bridge stroll, then US-50 home - St. Louis in an hour
📅 With Reunly
Build the Eldon Hazlet State Recreation Area reunion schedule in minutes
Drag the sample itinerary above into Reunly's Schedule, add per-event RSVPs, and share one link with the whole family. Rosi (our AI) fills in gaps from your group size and dates.
Reunion organizer tips
Book the campsite block the morning your ExploreMoreIL window opens - Hazlet's size is forgiving, but summer holiday weekends fill even 320 sites, and adjacent rows are what make it a compound.
Reserve a lakeside picnic shelter as the all-hands mess hall - with the campground this big, one fixed meal point keeps a scattered family from becoming three separate reunions.
Rent pontoons from the marina for the same dates you book camp - one boat per 8-10 relatives, and the Saturday raft-up cove lunch becomes the weekend's postcard.
Mix the lodging deliberately: RV rows for the equipped, camper cabins for the grandparents, tent loops for the cousins, Carlyle motels for the holdouts - all within 15 minutes of the same fire ring.
Set the fishing rhythm: crappie boats at dawn, kid pier hour mid-morning, and a Friday-night fillet crew so Saturday's fish fry is stocked before the derby trash talk peaks.
Life jackets on every kid on the big water, and watch the wind forecast - 26,000 acres builds real chop; pontoon captains should plan coves, not crossings, on gusty afternoons.
Make sunset the standing all-family event: chairs on the west-shore lawn at 7:45, no phones except cameras - the lake does the programming.
Schedule around the regattas, not against them - check the Carlyle sailing calendar and put your pontoon day adjacent to a race weekend for free spectacle without the ramp congestion.
Provision in Carlyle on arrival day (groceries, ice, bait, the DQ scouting run) and assign an ice-run rotation - big campground, hot summer, endless coolers.
Summer heat plan: swim and boat mornings, shelter-shade or town air-conditioning at 3 PM, and evening pier fishing when the lake glasses off.
Bring bikes for every kid - Hazlet's loop roads are the classic campground freedom machine, and the reunion runs smoother when the under-12s have a fleet.
Run the whole camp through Reunly: site-row assignments, boat and shift rosters, the shelter meal schedule, fish-fry duty roster, and per-family cost splits for boats, ice, and firewood - a 300-site campground rewards a family that shows up organized.
How Reunly helps you plan it
Reunly is the all-in-one app made for family reunion organizers. Free to start. No credit card. Cancel anytime.
Smart guest list
Drop in any spreadsheet - Rosi (our AI) reads multi-sheet, color-coded family groups, even handwritten exports. RSVP, dietary, T-shirt, paid status all in one row.
Open in Reunly →Public RSVP link
Share one link with the whole family. They RSVP per event (Friday BBQ, Saturday dinner) without making an account. You see live counts.
Open in Reunly →Budget that adds up
Track estimated vs. actual, who paid, who still owes. Auto-creates per-guest fee rows from your registration cost.
Open in Reunly →Day-by-day schedule
Friday welcome BBQ, Saturday photo, Sunday brunch - with location, meal flag, and per-event RSVPs.
Open in Reunly →Name tags + printables
Avery 5160 sheets color-coded by family, programs, welcome packets, packing lists - auto-filled from your data.
Open in Reunly →Rosi the AI helper
Stuck on a reminder email? A budget? A timeline? Click Rosi anywhere in the app - she drafts it from your live data.
Open in Reunly →Plan your Eldon Hazlet State Recreation Area reunion with Reunly
Free to start. Build your guest list, share an RSVP link, track payments, and print name tags - no spreadsheets.
Frequently asked
How big is Carlyle Lake?
About 26,000 acres - the largest lake in Illinois, a Kaskaskia River reservoir with a nationally known inland sailing scene, big-water boating, and standout crappie, white bass, catfish, and sauger fishing. Eldon Hazlet sits on its west shore.
Is Eldon Hazlet really the biggest campground in Illinois?
Yes - with more than 320 electric sites plus tent loops and camper cabins, it's the largest campground in the Illinois state park system. For big family reunions that means something rare: entire adjacent rows bookable through ExploreMoreIL.
How far is Eldon Hazlet from St. Louis?
About 50 miles - roughly an hour east via I-64/US-50 to Carlyle. St. Louis Lambert (STL) is the fly-in airport, making this one of the easiest big-water reunions for a scattered family to reach.
Does the park charge an entrance fee?
No - Illinois state parks have no entrance or parking fees. Camping, camper cabins, shelters, and marina rentals are the only costs, which keeps a week on the state's largest lake startlingly affordable.
Can you rent boats on Carlyle Lake?
Yes - marinas on the lake rent pontoons and fishing boats by the day, and the park's ramps launch private boats of any size. For summer weekends, reserve rental boats when you book campsites; the pontoon fleet goes first.
Can you swim at Carlyle Lake?
Yes - designated swimming areas and sand beaches operate around the lake in season, including near the Hazlet shoreline and at the Corps of Engineers day-use areas by the dam. Life jackets for kids and attention to wind-day chop are the two house rules.
What's the fishing like?
The lake's calling cards are crappie (flooded timber and brush piles), spring white bass runs, channel and flathead catfish, and largemouth - plus a regionally famous fall-winter sauger bite in the tailwater below the dam. Kids under 16 fish free in Illinois.
When should a summer reunion book its campsites?
The day your reservation window opens on ExploreMoreIL - even 320 sites fill on summer holiday weekends, and adjacent-row blocks (the thing that makes a reunion compound work) are the first inventory to vanish. September dates book far more easily.
Other reunion-friendly spots nearby
Helpful planning guides
The complete family reunion checklist
12-month, 6-month, and day-of checklists organizers actually use.
Read the guide →Family reunion budget guide
How to estimate, track, and split costs without spreadsheets.
Read the guide →Family reunion on a $2,500 budget
A real budget breakdown for a destination reunion under $2.5K.
Read the guide →