Dunns Ultra Marathon Badasses

NOV
7
2026
Trail ultramarathon at Dunns Creek State Park near Pomona Park FL offering looped 100 mile, 100k and shorter distances with on course aid and overnight support.
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.)

Dunns Ultra Marathon Badasses is a trail ultramarathon held at Dunns Creek State Park in Pomona Park, Florida, organized by Sombrero Running. The event uses a looped trail course of approximately 11.9 miles that features compact grass, forest service roads, canopied forest, open prairie areas and some sugar sand sections. Each loop includes about 300 to 350 feet of elevation gain and loss and finishes with roughly 1.5 miles on asphalt back to the runners village.

The course includes two shallow water crossings with optional footbridges, a high point called Mt. Maars, and natural scenery of longleaf pines, wiregrass and sandpine scrub that provide habitat for species such as gopher tortoises and fox squirrels. Two fully stocked on-course aid stations are placed near mile 1.5 and mile 8.5 with an additional aid presence near mile 3.5. Aid station supplies include hydration products, hot and savory food items, and overnight offerings at the runners village such as soup, ramen and coffee.

Support and logistics include a large compact grass parking and runners village where crewing next to vehicles is possible, limited camping on Friday for a state park fee, and park rules that restrict alcohol and may limit open flames. Awards, finish buckles and pacer and drop down policies are defined by the organizer; pacers are allowed for the 100 mile and 100k distances after the third loop and runners aged 60 or older may have a pacer at any time. Visit the organization's website for the most recent information.

100 mi
100 Miler
100 km
100k Ruck
100 km
100k
35 mi
35 Miles Ruck
35 mi
35 Miler
12 mi
12 Miles Ruck
12 mi
12 Miler
8 km
8k Sunday
8 km
8k Ruck Sunday
8 km
8k Ruck
8 km
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