Nature Coast 100K

DEC
5
2026
Trail ultramarathon in Chiefland, Florida on the Nature Coast State Trail offering 100K, 50K and a 50K ruck with stocked aid stations and a 24 hour cutoff.
Sat 5 Dec 2026
100 kilometers 50 kilometers

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Nature Coast 100k : Chiefland, Florida

The Nature Coast event offers ultramarathon and rucking options on the paved Nature Coast State Trail near Chiefland, Florida. The event includes the following distances:

  • 100K
  • 50K
  • 50K Ruck

The course follows a paved rail trail through rural communities including Chiefland, Trenton, Cross City, and Fanning Springs. Runners and ruckers pass historic railroad corridors, river views of the Suwannee River region, oak hammocks, pine forests, and wetlands. Wildlife in the area includes deer, wild turkey, gopher tortoises, hawks, and Gulf sturgeon.

Multiple fully stocked aid stations and a central aid hub operate throughout the day, providing water, an electrolyte drink, snacks, basic first aid, and restrooms at select locations. Participants are expected to carry hydration between aid stations. All participants have 24 hours to complete their event.

Pacers are permitted after 12:00 PM on race day and must check in with race staff, use designated aid station access points, and follow rules about assistance and conduct. The ruck division requires a minimum dry pack weight (women 20 lb, men under 150 lb 20 lb, men over 150 lb 30 lb), a backpack style pack worn on the back, and continuous carrying of the pack for an official ruck finish.

Free parking is available at the College of Central Florida Jack Wilkinson Levy Campus. Race management may alter the course or aid station locations for safety. The event accepts rollover credit on a sliding scale; refunds are not permitted. Visit the organization's website for the most recent information.

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