The Longest Day 100k

JUN
12
2027
An elimination ultra on a two mile loop at Lakewood Nature Preserve where lap cutoffs shrink by one minute and runners chase distances to 100K.
Sat 12 Jun 2027
100 kilometers 50 miles 50 kilometers 26 miles 13 miles

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The Longest Day at Lakewood Nature Preserve

The Longest Day is an elimination-format event held on a two mile grass loop that winds through 120 acres of forest and open field at Lakewood Nature Preserve in Greenville, SC. The course features rolling hills, shaded sections, red cedar and maple, and opportunities to see white tailed deer, box turtles, or foxes.

Racing is governed by progressive lap cutoffs that shorten by one minute each circuit, beginning with a generous window and tightening to a 15 minute cutoff on the thirty first lap. Lap counts correspond to standard distances on the loop: seven laps equals a half marathon, fourteen a marathon, sixteen a 50K, twenty five a 50 mile, and thirty one a 100K. Miss a cutoff and the participant’s race ends; finishers who complete at least 10K receive a medal.

A simple aid station at the barn serves each lap with water, soft drinks, and selected snacks; the event is cupless so runners should use a personal hydration vessel. There is no on site power, and participants and crews should plan accordingly. On site parking is available for a fee paid during registration. Camping is available on the event grounds with Friday evening setup permitted. The event includes chip timing with live results, a custom bib and medal, icy towels at the finish, event giveaways, race photos, age group awards across multiple categories, and a Last Runner Standing award in the elimination format.

This event is part of the Upstate Race Series and supports local nonprofits through the series giving program. Visit the organization's website for the most recent information.

100 km
100k
50 mi
50 Mile
50 km
50k
26 mi
Marathon
13 mi
Half Marathon
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