Dunns Ultra Marathon Badasses - D.U.M.B.
Nov 7pomona park, FL100 mi, 100K +3
37 mi from Sombrero Ultra Running Festival ( SURF ), by Mike Martinez / Sombrero Running Events LLC, registration open
48 hr24 hr12 hrRegistration open
Sombrero Ultra Running Festival ( SURF )
middleburg, FloridaMike Martinez / Sombrero Running Events LLC
- 7 mi entry
- $55
- Aid stations
- 3
- Days to register
- 43
At a glance
- Date
- Feb 12, 2027
- Location
- middleburg, Florida
- Distances
- 48 hr, 24 hr, 12 hr
- Aid stations
- 3, 1 with crew access
- Registration
- Open until Dec 4, 2026, via ultrasignup.com
Listed from UltraSignup. Checked Oct 18, 2026.
Plan this race for free
3 aid stations are already loaded. Add cutoffs, pacing and the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planAbout this race
The Festivus 100/50 Miler Trail Run is the longest trail race in Northeast Florida, held on a scenic 7.2-mile loop with 225 feet of elevation gain/loss through longleaf pines and palmettos in Middleburg, FL. Runners can choose from 100, 50, 35, 14, or 7-mile distances on the looped course.
Key dates
Early ends
May 3, 2026
Registration closes
Dec 4, 2026
Race day
Feb 12, 2027
Pricing
100 Miler
Standard
$220
50 Miler
Standard
$155
35 Miler
Standard
$115
14 Miler
Standard
$75
7 Miler
Standard
$55
Email me updates about Sombrero Ultra Running Festival ( SURF )
Registration openings and major changes, like a new date or a cancellation.
Aid stations
3| Station | Distance | Crew | Drop bags | Cutoff | Supplies |
|---|---|---|---|---|---|
Start/Finish Main Aid Station Main aid station at the start/finish line. Cupless race: bring a handheld or hydration pack. | 0.00 miles | -- | waterSkratch orangeSkratch lemon limebacon+8 | ||
Campground Aid Station Fully stocked aid station with hot foods at the 4-mile mark in the campground area. | 4.00 miles | -- | -- | ||
Unmanned Hydration Station Unmanned hydration station at the 2-mile mark with a replenished igloo of water throughout the day. | 2.00 miles | -- | water |
Entry transfers
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
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Race planning
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