Dunns Ultra Marathon Badasses

NOV
7
2026
Experience the diverse pine and scrub landscapes of Dunns Creek State Park on a scenic looped course featuring distances from an 8k to a 100 mile ultramarathon.
Sat 7 Nov 2026
100 miles 100 kilometers 35 miles 12 miles 8 kilometers

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Dunns Ultra Marathon Badasses - D.U.M.B.

The Dunns Ultra Marathon Badasses takes place at Dunns Creek State Park in Pomona Park, Florida. This event utilizes a diverse trail system featuring longleaf pines, wiregrass, and sandpine scrub. The landscape is home to native wildlife such as gopher tortoises and fox squirrels.

Participants navigate an 11.9 mile loop course that traverses compact grass, forest service roads, and wide trails. The route includes gradual inclines and declines with approximately 300-350 feet of elevation gain and loss per loop. A highlight of the course is "Mt. Maars" at the 15k mark, which offers views of the surrounding forest. The terrain includes some sections of sugar sand and two shallow water crossings, though footbridges are available. The final 1.5 miles of each loop consists of an asphalt road leading back to the event hub.

The event offers several distances and categories:

  • 100 miles
  • 100 km (Run and Ruck)
  • 35 miles (Run and Ruck)
  • 12 miles (Run and Ruck)
  • 8 km (Run and Ruck)

The 100-mile and 100-km distances have a 36-hour cutoff. Finishers of the 100 mile and 100 km races receive belt buckles. Runners in the 100-mile and 100-km categories may use pacers after the third loop.

The central hub, Runner's Village, is located at the start and finish line on a compact grass area. It serves as the primary crew location where participants can set up tents or canopies. Two fully stocked aid stations are located on the course at miles 1.5, 3.5, and 8.5. Visit the organization's website for the most recent information.

100 mi
100 Miler
100 km
100k
100 km
100k Ruck
35 mi
35 Milers Ruck
35 mi
35 Milers
12 mi
12 Milers
12 mi
12 Mile Ruck
8 km
8 km
8k Ruck
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