The Longest Day 100k
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Event overview
The Longest Day is a trail running event on June 13, 2026, at Lakewood Nature Preserve, 220 Lakewood Drive, Greenville, SC 29607. Race proceeds and donations support the Upstate Running Club Youth Team. Distances offered include:
- 13.1 (Half Marathon)
- 26.2 (Marathon)
- 50k
- 50mi
- 100k
Included with registration are a finisher medal, custom race bib, free admission to Lakewood Nature Preserve, event-themed giveaways, a race sticker, complimentary race photos, music and a post-race gathering, an iced/water towel, a hydration sample, and a custom collapsible hydration cup.
Format, course and logistics
The event uses a 2-mile loop on grass trails through a 120-acre preserve with rolling hills and partial shade. The race is an elimination-style format: the first lap allowance is 45 minutes and each subsequent lap is one minute shorter. Runners who fall behind the lap cutoff must stop and return their bib. Lap 31 corresponds to the 100k finish. Aid on course includes snacks (pickles, cookies, candy) and drinks (water, Coke, ginger ale); participants must bring their own cup or bottle because the event is cup-less.
Registration policies allow transfers and distance changes. Club members receive a 15% discount and referring two runners yields a $5 credit. Race shirts are sold separately, and medals and awards are not shipped. Volunteers who help a 3-hour shift may earn a free entry to an Upstate Race Series-owned event. Visit the organization's website for the most recent information.