Sombrero Sizzler

Jacksonville, United States • 18 Jul 2026

Sombrero Sizzler - July 18, 2026

Sombrero Sizzler is a loop-based timed running and rucking event held in Jacksonville, FL on the grounds of the former Cecil Field. The course uses a 1.25 mile paved loop made of approximately three quarters asphalt and one quarter concrete, with a short grassy section at the end and pine trees lining much of the route.

The loop is described as flat with minimal turns; there are five wide right turns per lap. Races take place over multiple timed durations, and a single main aid station is located at the start/finish pavilion.

Distances and formats:

  • 3 hours timed event
  • 6 hours timed event; relay option for four-person teams, any gender (limit 10 teams)
  • 9 hours timed event
  • 12 hours timed event

The aid station will offer standard ultra foods and Skratch Electrolyte for hydration. Food will be grilled throughout the day, including breakfast items, burgers (vegan options), brats, Italian sausage, and bacon. Each participant receives a custom medal; additional swag items are listed as TBD. Overall awards include overall top three in each event plus other special awards; team awards depend on participation.

Parking is available on the road leading into the pavilion area (no parking inside the pavilion). Several hotels and restaurants are located within about 3 to 5 miles of the course. Registration closes July 10. Visit the organization's website for the most recent information.

Race information

12 Hour
3 Hour
6 Hour
6 Hour Relay
9 Hour
Visit the organization's website for the most recent information.
Trail runs nearby

A charity event at Seamark Ranch featuring a 5K course with 26 obstacles through woods, fields, ponds and mud, plus a 1-mile fun run. Proceeds support Seamark Ranch, a Christian boys and girls home in Green Cove Springs.

Experience a messy three mile obstacle course at the Jacksonville Equestrian Center. Participants run crawl and slide through mud and water in this functional outdoor event designed for friends and families.

A free 5-hour trail event on the hilly, technical Section 4 of the Pioneer Trail. See how many out-and-back loops you can complete on this single-track course. Bring your own cup and fuel, and optional donations support trail maintenance.

S.O.S. in Jennings State Forest features a 9K and 3/6/12-hour timed events on a 2.75 mile loop, with ruck options and a cupless aid setup. The event supports local recovery and mental health nonprofits.

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