

THE NEXT LOOP
ENDURANCE SERIES & 40M/50M CHALLENGE
Presented by EverFurther, LLC
Mid-West Region
Chicago | St Louis
August 2026
Five weekends. Two major Midwest markets.
One loop-based endurance format built for runners who want to see how far they can go.
The Next Loop is coming to the Midwest Region in August 2026 with events in the Chicago and St. Louis areas.
Whether you are chasing your first trail race, your first ultra, a new PR, or one more loop beyond what you thought was possible, these events are designed to meet you where you are and help you go farther.

Mid-West Region 2026
Links to Registration Sites
August 1, 2026 | Indian Camp Creek Park
Foristell, Missouri | St. Louis
Register Here
August 8, 2026 | Deer Grove East Forest Preserve
Palatine, Illinois | Chicago
Register Here
August 15, 2026 | Busse Woods
Elk Grove Village, Illinois| Chicago
Register Here
August 22, 2026 | Cliff Cave Park
St. Louis, Missouri | St. Louis
Register Here
August 29, 2026 | Half Day Forest Preserve
Vernon Hills, Illinois | Chicago
Register Here
What's the Difference Between The Next Loop Endurance Series and The Next Loop 40M/50M Challenge?
Both events share the same welcoming atmosphere, centralized aid station, and supportive community—but they are designed for two very different endurance experiences.
The Next Loop Endurance Series
Your race. Your distance. Your decision.
The Next Loop Endurance Series is built around a simple concept: complete one 5K loop every hour, on the hour.
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Run a loop.
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Return to the start/finish area.
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Rest, refuel, and recover.
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Start the next loop when the clock reaches the top of the hour.
You decide when you're finished.
Every completed loop earns an official distance:
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1 Loop = 5K
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2 Loops = 10K
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3 Loops = 15K
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4 Loops = Half Marathon
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5 Loops = 25K
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6 Loops = 30K
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7 Loops = 35K
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8 Loops = 40K
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9 Loops = Marathon
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10 Loops = 50K
Whether you're a first-time trail runner looking to complete a 5K or an experienced athlete aiming for 50K, the format allows you to challenge yourself without committing to a specific distance before race day.
Perfect for:
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New trail runners
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Athletes testing longer distances
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Marathon and 50K goals
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Runners who enjoy recovery time between efforts
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Anyone who wants flexibility on race day
The Next Loop 40M/50M Challenge
Continuous Forward Progress. No Scheduled Breaks.
The 40M/50M Challenge is a traditional ultra-distance event run on the same loop course, but with a completely different format.
Participants start at 7:00 AM and continue running loops until they complete either:
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40 Miles
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50 Miles
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No DNFs. Every Mile Counts
There are no hourly starts and no mandatory recovery periods.
You manage your own pace, breaks, nutrition, and strategy throughout the day.
The event features:
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Continuous timing
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Fully stocked central aid station every loop
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Personal gear access each lap
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Pacers allowed later in the event (venue-specific rules apply)
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12-hour cutoff
Perfect for:
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Experienced trail runners
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Marathon finishers looking to step up to ultra distances
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Athletes training for longer ultras
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Runners who prefer continuous forward movement
Which Event Is Right For You?
Choose The Next Loop Endurance Series if:
✅ You're new to trail running
✅ You're unsure how far you want to go
✅ You like having recovery time every hour
✅ You want to earn a new distance milestone
✅ You enjoy a social and supportive race environment
Choose The Next Loop 40M/50M Challenge if:
✅ You've completed a marathon or ultra before
✅ You want a traditional endurance challenge
✅ You prefer continuous running
✅ You're targeting a 40-mile or 50-mile finish
✅ You enjoy managing your own pacing strategy
One Venue. Two Challenges. One Community.
Whether you're completing your first 5K loop or chasing a 50-mile finish, you'll share the same trails, aid station, and encouragement from fellow runners.
Your Endurance. No Limits. One More Loop.
