Arrowhead Endurance Run 2026
- Date
- Saturday, October 10, 2026
- Start time
- 7:00 AM start (Chicago)
- Location
- Johnston City, Illinois
- Entry fee
- From Free
- Included with entry
- Includes a shirt
Check registration status on RunSignup.
We earn a small commission when you register through this link, at no cost to you. Details
Add to calendar: Apple or Outlook · Google
Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| 12 HOUR | Other | Oct 10, 20267:00 AM | Free | – |
| 24 HOUR | Other | Oct 10, 20267:00 AM | Free | – |
| 24 HOUR Relay | Relay | Oct 10, 20267:00 AM | Free | – |
| 6 HOUR | Other | Oct 10, 20268:00 AM | Free | – |
| 3 HOUR | – | Oct 10, 20269:00 AM | Free | – |
| 12 HOUR - NIGHT TIME | – | Oct 10, 20267:00 PM | Free | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
Race day planning
Light and altitude
Sunrise on race morning is at about 6:58 AM, and the 12 HOUR starts at 7:00 AM. The start sits about 470 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
Arrowhead Lake, Johnston City, IL 62951
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
2025 results
All results (5 years)12 HOUR
24 HOUR
6 HOUR
Aggregated from official results (So iLL Racing) for Arrowhead Endurance Run. Individual finisher names are not stored here.
How fast do you need to be at Arrowhead Endurance Run?
At the 2025 12 HOUR, the fastest tenth finished in 7:58:51 or better, the top quarter in 9:17:04, and half the field in 11:09:22; the last tenth came in after 11:51:18.
At the 2025 24 HOUR, the fastest tenth finished in 13:25:27 or better, the top quarter in 13:59:13, and half the field in 18:13:16; the last tenth came in after 23:46:09.
At the 2025 6 HOUR, the fastest tenth finished in 2:59:09 or better, the top quarter in 5:09:55, and half the field in 5:38:01; the last tenth came in after 5:54:11.
| Age | Women | Men |
|---|---|---|
| 50-59 | 10:33:32 | 10:57:53 |
| 60-69 | n/a | 11:41:31 |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
What would my time get me?
Where a finish time would have placed in 2025.
Finishers by year
Down 7 percent since 2021.
All events combined, from official results.
Arrowhead Endurance Run Other year by year
From 2021 to 2025, the field went from 45 to 32 finishers, and the median time rose from 5:40:45 to 11:09:22.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2025 | 32 (same) | 11:09:22 | under 7:58:51 | 5:52:15 |
| 2024 | 32 (+60%) | 2:50:10 | under 2:22:09 | 2:04:02 |
| 2023 | 20 (-41%) | 10:30:15 | under 5:50:07 | 1:27:34 |
| 2022 | 34 (-24%) | 5:42:57 | under 5:13:54 | 4:20:19 |
| 2021 | 45 | 5:40:45 | under 4:27:21 | 1:49:21 |
From each year's official results for the Other; virtual options are left out.
Typical race-day weather
Around October 10 the day usually runs from 54°F at dawn to 76°F in the afternoon, with measurable rain on about 12% of days. Cold snaps dip to 46°F and hot years reach 82°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
Race details
- Where
- Arrowhead Lake, Johnston City, IL 62951Map
- Course
- Road
- Start elevation
- About 470 feet
- Included with entry
- T-Shirt
- Distances
- Relay, Other
- Editions
- 2026 (Oct 10, 2026), 2025 (Oct 11, 2025), 2024 (Oct 12, 2024), 2023 (Oct 7, 2023), 2022 (Oct 8, 2022), 2021 (Oct 9, 2021)
Organize this race? Add details or a correction
Plan your race
Quick answers
- When is Arrowhead Endurance Run?
- Saturday, October 10, 2026, starting at 7:00 AM.
- How much does it cost?
- Entry starts at Free before processing fees.
- Do runners get a shirt or medal?
- Entry includes a shirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
- What distances can I run?
- Relay, Other.
- How big is it, and how fast?
- In 2025, 32 runners finished the 12 HOUR; the median finish was 11:09:22 and the winner ran 5:52:15.
- Where does it start?
- Arrowhead Lake, Johnston City, IL 62951.
From the organizers
This is for results posting only.
To register please visit
https://ultrasignup.com/register.aspx?did=81370