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The Next Loop 40M/50M Challenge | Deer Grove East

📅 August 7, 2027 (estimated date)📍 Palatine · United States

⚠️ 2027 edition: provisional information

The date is estimated from the 2026 edition (August 8, 2026), on the same day of the week. Courses, start times, fees and description are carried over from the previous edition: check them on the official website. This page will be updated as soon as the organizer publishes them.

Available distances

50 mi40 m

About

The Next Loop 40M/50M Challenge | Deer Grove East is a looped ultramarathon at Deer Grove East Forest Preserve in Palatine, Illinois, offering 40-mile (64.4 km) and 50-mile (80.5 km) distances on August 7, 2027, with a 7:00 a.m. start. It is ideal for athletes ready to go beyond the marathon distance.

The 3.1-mile (5 km) loop winds through mature woodlands, restored prairies, oak savannas and open wetlands. Expect mostly flat to gently rolling terrain with firm footing, making it a great course to test your limits or go for a new distance PR.

A central start/finish area with an aid station lets runners manage hydration, nutrition and gear efficiently while staying focused on their performance: no complicated logistics, just the challenge and what you make of it.

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