Dunns Ultra Marathon Badasses
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Dunns Ultra Marathon Badasses (D.U.M.B.)
Dunns Ultra Marathon Badasses is a trail event on November 7, 2026 at Dunns Creek State Park in Pomona Park, FL, organized by Sombrero Running. The event uses an approximately 11.90 mile loop that will be used for most distances and is the first hundred mile race to be held at the park.
Distances offered include:
- 100 miles
- 100k
- 100k ruck
- 35 miles
- 35 mile ruck
- 12 miles
- 12 mile ruck
- 8k
- 8k ruck
The loop runs through mixed terrain with longleaf pines, wiregrass and sandpine scrub. Runners will encounter compact grass, forest service roads, some sugar sand and about 300 to 350 feet of elevation gain and loss per loop. There are two shallow water crossings with optional foot bridges and the final 1.5 miles of each loop are on asphalt road.
Cutoffs are set by distance, for example 100 mile and 100k cutoffs are 36 hours, 35 mile cutoffs are 16 hours, 12 mile cutoffs are 6 hours, and 8k cutoffs are 3 hours. Pacers are allowed for the 100 mile and 100k after the third loop; runners and ruckers aged 60 or older may have a pacer at any time. Pacers must sign a waiver.
The ruck division uses minimum weights of 10 pounds for females and 20 pounds for males. A drop down from the 100 mile to the 100k distance is allowed after completing at least 100k; a dropped runner may receive the 100k buckle but is not eligible for awards for the 100 mile.
Two fully stocked aid stations are on course at about 1.5 and 3.5 miles and at about 8.5 miles, plus a runner village aid and grilling station with hot food and overnight items. Runner village parking is compact grass adjacent to the start and finish so crew may stay near vehicles; tenting and RVs are permitted. Camping the night before carries a state park fee of $30. Per park rules no alcohol is allowed and open flames are subject to park regulations.
Finisher items include custom belt buckles for the 100 mile and smaller 100k buckles, medals for all finishers, and rucker specific patches and mini buckles. Registration closes November 6, 2026. Visit the organization's website for the most recent information.
