Arrowhead Endurance Run

OCT
10-11
2026
A lap-based 24 hour endurance event at Arrowhead Lake Campground near Johnston City IL with a certified 2.07 mile gravel loop and multiple timed races.
10-11 Oct 2026
6hrs 3 Hour Race 24 Hour Relay 24 Hour 12hrs

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Arrowhead Endurance Run

The Arrowhead Endurance Run is a multi-distance, lap-based endurance event held October 10–11, 2026 at Arrowhead Lake Campground in Johnston City, IL. The course uses a certified 2.07 mile loop around the lake. The trail surface is mostly gravel with a short concrete section at the boat ramp and less than 50 feet of elevation change per loop, allowing consistent lap running. Chip timing is provided by SoILL Racing.

Available race formats include:

  • 24 Hour
  • 24 Hour Relay
  • 12 Hour
  • 12 Hour Night
  • 6 Hour
  • 3 Hour

Finishers registered before the shirt deadline (9/27/26) will receive event shirts. Each runner who completes at least one official lap in their registered race receives a custom medal. Buckles are awarded to runners who reach 100 miles in the 24 hour race within the cutoff. Overall winners in each race receive a special award.

There is one large aid station at the start/finish area offering standard aid station food, electrolyte options, water, and hot food throughout the event. Aid station food is for participants only. Participants may set up a personal pop-up tent or aid station on race morning; typical items include a camp chair and small table.

Entry fees are non-refundable and entries cannot be transferred to another year. Pregnancy deferral allows a 100% fee deferment to the following year. Littering or inappropriate behavior can result in disqualification and possible ban from future events. Camping is available at the race site and there are several hotels in Marion about 15 minutes from the campground. Visit the organization's website for the most recent information.

6hrs
3 Hour Race
24 Hour Relay
24 Hour
12hrs
12 Hour - Night Time
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