The Longest Day 100k

Event overview

The Longest Day is a trail endurance race held June 13, 2026, at Lakewood Nature Preserve, 220 Lakewood Drive, Greenville, SC 29607. Race proceeds support the Upstate Running Club Youth Team. The event takes place on a grass-trail loop through forest and rolling grassy areas with partial shade and wildlife on a 120-acre preserve. Camping and tent setup options are available during the race weekend.

Distances

• 13.1
• 26.2
• 50k
• 50mi
• 100k

Format and course

Runners complete repeated 2-mile laps. The first lap has a set maximum time; each subsequent lap allows one minute less to complete. Participants who fail to complete a lap within the allotted time must stop and remove their bib. The first runner to complete lap 31 is declared the overall winner for the 100k distance. The course contains rolling hills and partial shade.

Amenities and aid

Registration includes a finisher medal, custom race bib, park entry, race photos, event giveaways, a race sticker, and a collapsible hydration cup. Aid station items listed for race day include pickles, cookies, candy, water, Coke, and ginger ale. The event is cup-less; participants should bring their own bottle or cup.

Registration and policies

Current listed price is $40 (youth rate noted at $15). Transfers and distance changes are permitted through the registration profile. No refunds or deferrals will be offered unless the event sells out; if sold out, a 50% off code for a future Upstate Race Series event may be requested. Volunteers who work a 3-hour shift earn a free entry to an Upstate Race Series-owned event. Visit the organization's website for the most recent information.