The Longest Day 100k
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The Longest Day : event overview
The Longest Day takes place on June 13, 2026 at Lakewood Nature Preserve, 220 Lakewood Drive, Greenville, SC 29607. The event is part of the Upstate Race Series presented by Snyder Construction. Donations and race proceeds support the Upstate Running Club Youth Team. Registration options include vendor and sponsorship opportunities and camping reservations.
Distances offered
- 13.1 miles
- 26.2 miles
- 50 kilometers
- 50 miles
- 100 kilometers
Course, format and services
The race uses a 2-mile loop on grass trails through a 120-acre preserve with rolling hills and partial shade. Wildlife is present along the course. The timing format sets the first lap at 45 minutes to complete; each subsequent lap requires one minute less to finish. Participants who fail to complete a lap within the allowed time must stop and surrender their bib. Lap counts noted in event information include 7 laps for a half marathon, 14 laps for 26.2 miles, 25 laps for 50 miles, and 31 laps for a 100k finish.
Included with registration are a finisher medal, custom race bib, free admission to the preserve, event photos, post-race music, a collapsible hydration cup, iced towel, and sample hydration. Aid station items listed include pickles, cookies, candy, water, Coke, and ginger ale; the event is cup-less, so participants should bring their own bottle or cup. Visit the organization's website for the most recent information.