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The Longest Day 100k

Greenville, United States • 13 Jun 2026

The Longest Day is a unique endurance race held at Lakewood Nature Preserve in Greenville, South Carolina, featuring distances of 13.1 miles, 26.2 miles, 50k, 50 miles, and the challenging 100k. Participants race from sunrise to sunset on a 2-mile loop trail through 120 acres of forest, grass paths, and rolling hills, surrounded by local wildlife. Each lap must be completed faster than the previous, with the time allowed decreasing by one minute per lap, creating an intense elimination format. The event offers a festive atmosphere with music, giveaways, a post-race party, and encourages camping and cheering from supporters. Proceeds support the Upstate Running Club Youth Team. Visit the organization's website for the most recent information.

United States South Carolina Greenville

Race information

Registration
100 km
100k
50 mi
50 Miles
50 km
50k
26 mi
26.2 Miles (marathon)
13 mi
13.1 Miles (half Marathon)
Visit the organization's website for the most recent information.
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