The Longest Day 100k

JUN
13
2026
A sunrise-to-sunset trail elimination race at Lakewood Nature Preserve on a 2-mile loop, with lap time limits that shrink each circuit. Multiple distances are offered up to 100k, and proceeds support the Upstate Running Club Youth Team.
Sat 13 Jun 2026
100 kilometers 50 miles 50 kilometers 26 miles 13 miles

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The Longest Day

The Longest Day is a trail race at Lakewood Nature Preserve in Greenville, South Carolina. The event takes place on a 2-mile loop through roughly 120 acres of forest and rolling grass paths, with partial shade, varied terrain, and local wildlife.

The format is a repeated-lap elimination from sunrise to sunset. The first lap has a 45-minute time limit and each subsequent lap reduces the allowable time by one minute. Participants who do not meet a lap cutoff must stop and surrender their bib. If a participant completes lap 31, the first across the line at that point is the overall winner for the full distance.

Distances offered include:

  • 13.1
  • 26.2
  • 50k
  • 50mi
  • 100k

Aid at the course includes snacks such as pickles, cookies, and candy, and beverages including water, Coke, and ginger ale. The event is cup-less; participants should supply their own drinking container. Registration includes a finisher medal, a custom race bib, park entry, event-themed giveaways, a race sticker, complimentary race photos, music and a post-race gathering, an iced or water towel, and a hydration sample.

Camping and crew areas are available near the start/finish area, with an option for Friday evening tent setup and overnight camping by reservation. Race proceeds support the Upstate Running Club Youth Team. Volunteers who work a three-hour shift may earn a free entry to an Upstate Race Series-owned event. Visit the organization's website for the most recent information.

100 km
100k
50 mi
50mi
50 km
50k
26 mi
26.2
13 mi
13.1