Illinois · 24 Hour · 24 Hour Relay · 12hrs
Arrowhead Endurance Run
Arrowhead Endurance Run is a 24 Hour, 24 Hour Relay, 12hrs, 12 hour - NIGHT TIME and 6hrs event held in Johnston City, Illinois. It was last held on October 10, 2026 and is usually run in October; the next date hasn't been announced yet.
- Usually held
- October
- Location
- Johnston City, IL
Race details
- Last held
- October 10, 2026
- Usually held in
- October
- Location
- Johnston City, Illinois
- Distances
- 24 Hour, 24 Hour Relay, 12hrs, 12 hour - NIGHT TIME, 6hrs, 3 Hour Race
- Course
- Certified 2.07-mile flat gravel loop around Arrowhead Lake; under 50 ft of elevation change per loop
- Registration
- ultrasignup.com
- Official website
- facebook.com
Registration, course & weather
- Registration status
- Registration status as last checked September 28, 2026: open
- Start time
- 7:00 AM CDT
- Course profile — 24 Hour
- Loop course; Trail surface; USATF certified
- Course profile — 24 Hour Relay
- Loop course; Trail surface; USATF certified
- Course profile — 12hrs
- Loop course; Trail surface; USATF certified
- Course profile — 12 hour - NIGHT TIME
- Loop course; Trail surface; USATF certified
- Course profile — 6hrs
- Loop course; Trail surface; USATF certified
- Course profile — 3 Hour Race
- Loop course; Trail surface; USATF certified
- Typical race-day weather
- about 49°F at the start, 93% humidity, 2 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 28, 2026)
About the Arrowhead Endurance Run
Arrowhead Endurance Run is a multi-format timed ultra event (24 Hour, 24 Hour Relay, 12 Hour day and night, 6 Hour, and 3 Hour) held on a certified, nearly flat 2.07-mile gravel loop around Arrowhead Lake in Johnston City, Illinois. On-site camping and a single well-stocked aid station support runners chasing big mileage totals.
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Arrowhead Endurance Run: common questions
- When is the Arrowhead Endurance Run?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the Arrowhead Endurance Run held?
- In Johnston City, Illinois.
- What distances does the Arrowhead Endurance Run offer?
- 24 Hour, 24 Hour Relay, 12hrs, 12 hour - NIGHT TIME, 6hrs and 3 Hour Race.
- How do I register for the Arrowhead Endurance Run?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Arrowhead Endurance Run?
- Registration status as last checked September 28, 2026: open.
- What time does the Arrowhead Endurance Run start?
- 7:00 AM CDT.
- What is race-day weather usually like at the Arrowhead Endurance Run?
- about 49°F at the start, 93% humidity, 2 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 28, 2026).
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