The Next Loop 40M/50M Challenge | Half Day Forest Preserve
When is The Next Loop 40M/50M Challenge | Half Day Forest Preserve?
The Next Loop 40M/50M Challenge | Half Day Forest Preserve takes place on Saturday, August 29, 2026 in Vernon Hills, IL.
What distances does The Next Loop 40M/50M Challenge | Half Day Forest Preserve offer?
The Next Loop 40M/50M Challenge | Half Day Forest Preserve offers 1 event: 40M, 50M.
| Event | Distance | Price | |
|---|---|---|---|
| 40M, 50M | 50.0 mi | $200.00 | Register |
How much does The Next Loop 40M/50M Challenge | Half Day Forest Preserve cost?
Registration for The Next Loop 40M/50M Challenge | Half Day Forest Preserve starts at $200.00.
Where is The Next Loop 40M/50M Challenge | Half Day Forest Preserve held?
The Next Loop 40M/50M Challenge | Half Day Forest Preserve is held in Vernon Hills, IL at 24255 N Highway 21.
About The Next Loop 40M/50M Challenge | Half Day Forest Preserve
The 40/50 Mile Challenge
The 40/50 Mile Challenge is a continuous loop endurance race designed for runners who want to push beyond traditional race formats while benefiting from a fully supported, centralized course.
Held alongside The Next Loop Endurance Series, this event runs on the same 3.1-mile (5K) loop, but unlike the hourly format, competitors in the 40/50 Mile Challenge run continuously with a strict time cutoff.
This format offers a true ultra-distance experience—simplified logistics, consistent footing, and constant access to aid and support.
Event Format
Distances: 40 Miles or 50 Miles
Loop Length: 3.1 miles (5K)
Course Type: Continuous loop trail race
Time Limit: 12 hours
Start/Finish: Same location each loop
Aid Station: Fully stocked at every lap
Staging Area: Designated personal staging area near start/finish
Runners complete repeated loops until they reach their chosen distance or the time limit expires.
Who Should Run the 40/50 Mile Challenge
This event is ideal for:
Runners attempting their first ultra distance
Athletes stepping up from a marathon or 50K
Experienced ultrarunners seeking a fast, efficient course
Competitors who value logistics simplicity and strong support
The loop format removes navigation concerns and allows athletes to focus entirely on pacing, fueling, and mental toughness.