Campsite Odds

Campground · IL

SOUTH MARCUM CAMPGROUND

IL · Rend Lake

Booking is hardest here in March (5/10) and easiest in July (4/10). Pick a month below for the full breakdown.

Season at a glance

Booking difficulty by month

12-month reservation season
  1. Jan
  2. Feb
  3. Mar5
  4. Apr5
  5. May5
  6. Jun5
  7. Jul4
  8. Aug4
  9. Sep5
  10. Oct5
  11. Nov4
  12. Dec
1 · Easy10 · Lottery

Midweek tip: in the busiest month (March), arrivals are lightest on Tuesday — shift your dates to improve your odds.

Booking window

When reservations open

Booking window

Reservations open on a rolling 6-month window at 7:00 AM America/New York.

For example, sites for January 15, 2027 become bookable on July 15, 2026. Set a reminder a few minutes before release for the best shot.

Standard Recreation.gov 6-month rolling window: sites become bookable 6 months before arrival at 7:00 AM ET.

Facilities

Sites & amenities

  • 146 electric sites
  • 51 water hookups
  • 46 sewer hookups
  • 146 RV sites
  • 6 accessible sites
  • Max RV length 94 ft

Activities: CAMPING, BOATING, SWIMMING, WATER ACCESS, BIRDING, FISHING, BIKING

Location

Where it is