The Next Loop 40M/50M Challenge at Deer Grove East Forest Preserve invites runners to embrace the challenge of endurance on its scenic and runnable trail course near Palatine, Illinois. This continuous-loop event is designed for those who are ready to test their limits in a supportive environment that offers easy access to aid stations throughout the day. The race takes place within the picturesque woodlands and prairie landscapes of Deer Grove East, featuring smooth dirt trails, crushed limestone paths, and gentle rolling terrain. Runners can choose between two distances: 40 miles or 50 miles, both starting at 7:00 AM with a mass start. The loop format allows participants to return to the centralized aid station after each lap for hydration, nutrition, gear changes, and crew support. The course is approachable yet challenging as runners accumulate mileage throughout the day. Success in this event hinges on pacing, fueling strategies, mental resilience, and determination rather than raw speed. Ideal for first-time ultramarathoners looking to cross a finish line or experienced athletes preparing for longer ultra-distance goals, Deer Grove East offers an ideal setting for anyone aiming to push their limits. Pacers are allowed after the halfway point, providing additional support as runners near the end of their journey. Participants can also set up personal staging areas close to the start/finish and aid station for easy access to supplies throughout the event. Unlike other endurance series that use hourly starts, The Next Loop 40M/50M Challenge is a continuous-running affair where participants continue moving until they reach their goal or the cutoff time. Deer Grove East's natural beauty complements its runnable terrain, making it an inviting place for runners to discover how far they can go when they refuse to quit. With no DNFs and every mile counting towards your endurance journey, this event is about setting personal boundaries and pushing beyond them in a supportive community of like-minded athletes. No matter if you're chasing that first ultra finish or aiming for another personal best, Deer Grove East provides the perfect backdrop to make it happen. Your limits are only what you believe they are; one more loop could be just the start of your next adventure. Every mile in this event is a testament to endurance and determination, inviting runners to reflect on their progress as they circle back through familiar sections with new perspectives each lap. Deer Grove East's natural beauty, combined with its supportive community atmosphere, makes it an ideal setting for those seeking to challenge themselves while surrounded by the tranquility of nature. The Next Loop 40M/50M Challenge is not just a race; it’s an experience that celebrates perseverance and personal growth. Whether you’re pushing through your first ultra-marathon or aiming for another milestone, Deer Grove East offers the perfect blend of scenic beauty and supportive community to help runners achieve their goals.
Races Offered
The Next 40M/50M Deer Grove East
Aug 08, 2026
straighten
Distance —
80.5K
terrain
Type —
Running
timer
07:00
sell
$90.00
Weather History
These values represent the 3-year monthly averages for August in Palatine.
thermostatTemperature
17.5° / 27.0°
wb_sunnyFeels like
17.6° / 26.9°
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Avg sunshine hours
11h 36m
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Avg rainfall
2.5 mm
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Avg snowfall
—
air
Avg wind speed
10.4 km/h (Light breeze)
opacity
Sweat loss rate
High
terrain
Course conditions
Hard and dry surface
sunny
Max UV Index
High (7.0)
humidity_mid
Humidity
72.2%
wb_twilight
Sunrise
06:00
nightlight
Sunset
19:50
Hotels & Places to Stay
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