Eldon Hazlet State Park - United States

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About Eldon Hazlet State Park

RV quick facts for Eldon Hazlet State Park

DetailInformation
Full hookupsElectric hookups at most campsites; select sites offer water and sewer
Dump stationOn-site RV dump station available for registered campers
Max RV lengthLarge pull-through and back-in sites accommodate most Class A, Class C, and fifth-wheel rigs
Reservation windowReservations through the Illinois DNR Camp Illinois system, typically up to six months in advance
Cell serviceGenerally reliable on major US carriers across the campground loops
Road restrictionsNo tunnels, mountain passes, or weight-restricted approaches; paved interior roads
Generator hoursQuiet hours enforced overnight; generator use restricted during quiet hours per park rules

Best time to visit Eldon Hazlet State Park

Late spring through early fall is the prime window, with May, June, and September offering warm days, active wildlife, and manageable humidity. July and August are peak season for boating and swimming on Carlyle Lake but bring heat, storms, and weekend crowds, so reservations are essential. Early spring and October are quieter shoulder periods with cool nights and good birding, though some loops and amenities may be on a reduced schedule.

Jan 55 mm
39°F - 21°F

Cold winter conditions; campground services limited

Feb 55 mm
44°F - 25°F

Cold and often icy; limited amenities

Mar 85 mm
56°F - 34°F

Shoulder season; variable weather

Apr 105 mm
68°F - 46°F

Mild with spring storms

May 115 mm
77°F - 57°F

Warm and green; strong camping month

Jun 100 mm
86°F - 66°F

Peak boating season begins

Jul 95 mm
90°F - 70°F

Hot and humid; holiday weekends book out fast

Aug 80 mm
88°F - 68°F

Peak season; storms possible

Sep 80 mm
81°F - 61°F

Warm days and cool nights; excellent shoulder month

Oct 85 mm
68°F - 46°F

Fall color and quieter loops

Nov 80 mm
54°F - 36°F

Cool; some loops close for the season

Dec 70 mm
43°F - 25°F

Cold; most campground services closed for winter

Things to do at Eldon Hazlet State Park

  • Boating and Sailing on Carlyle Lake Easy
    RV parking available

    Carlyle Lake is the largest man-made lake in Illinois and a top destination for sailing, power boating, and personal watercraft. The park marina offers launch ramps and slips, with easy access from the main campground.

  • Fishing at Peppenhorst Branch and Main Lake Easy
    RV parking available

    Anglers target largemouth bass, white bass, crappie, bluegill, and channel catfish from shoreline points and boats. Several fishing access points include nearby parking suitable for trucks and tow vehicles.

  • Cherokee Hiking Trail Moderate
    RV parking available

    The Cherokee Trail is a multi-loop footpath winding through wooded ravines and along quiet coves of Carlyle Lake. It offers several miles of rolling terrain and is the park's primary hiking option.

  • Equestrian Trails and Horse Campground Moderate
    RV parking available

    Eldon Hazlet maintains designated bridle trails and a separate equestrian camping area for riders bringing horse trailers. The routes explore prairie restorations and woodland edges away from the main campground.

  • Birdwatching and Wildlife Viewing Easy
    RV parking available

    The park's mix of prairie, forest, and lakeshore makes it a productive stop for birders, with waterfowl, raptors, and songbirds common throughout the seasons. Fall and spring migrations bring especially diverse species to Carlyle Lake.

  • Picnicking at Lakeview Shelters Easy
    RV parking available

    Multiple picnic areas overlook Carlyle Lake with shaded tables, grills, and reservable shelters. Parking lots at the larger shelters accommodate trucks, vans, and most motorhomes.

  • Swimming Beach Access Easy
    RV parking available

    Designated swim areas along Carlyle Lake provide sandy entry points for summer visitors. Day-use parking is near the main park road and easy to reach from campground loops.

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RV Rentals Eldon Hazlet State Park

Eldon Hazlet State Park, IL, United States

How to get to Eldon Hazlet State Park

The park is about 50 miles east of St. Louis, Missouri (roughly a one-hour drive) and about 65 miles southeast of Springfield, Illinois (around 75 minutes). From Interstate 64, exit at IL-127 and head north through Carlyle, then follow signs west of the lake to the park entrance. Roads into the park are flat, paved, and RV-friendly with no tunnels or steep grades, though drivers should watch for low-clearance picnic shelters and tight turns inside some campground loops. The nearest major airport for fly-and-rent trips is St. Louis Lambert International Airport (STL).

RVezy vs. Traditional RV rental

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Traditional RV rental

  • Limited fleet from a rental company
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  • Pickup only at retail locations
  • Fewer RV types and less availability