Sombrero Ultra Running Festival (SURF)

Middleburg, United States • 13 Feb 2026

Event overview

The Sombrero Ultra Running Festival (SURF) is the second annual multi-day running festival held at the Clay County Regional Sports Complex, 4790 Victory Lane, Middleburg, FL. The event date is February 13, 2026. Registration closes February 12.

The venue opens before the event to allow participants to set up tents, canopies, and crewing areas. There are no refunds for this event.

Race formats and support

Available race formats:

  • 3-hour (Saturday)
  • 3-hour (Sunday)
  • 6-hour
  • 12-hour day
  • 12-hour night (overnight)
  • 24-hour
  • 48-hour

Timing is provided by a professional timing company. Pacers are permitted only for the 24-hour and 48-hour events after a runner has completed 12 hours; pacers must register with race staff and exceptions are handled case-by-case. Footcare services are planned for 2026 and final details are under discussion. Medical personnel will be on site for the full 48-hour period; the lead medical clinician has over 20 years of emergency medicine experience.

Support and logistics: there is a runner village for crews, tents, and vehicles. RV parking is allowed with no hookups and an on-site fee of $15; payment options include cash, Venmo, and PayPal. The event is cupless; runners must bring their own bottles, hydration vests, or collapsible cups. Aid station items include water, electrolytes, soda, fruit, snacks, and a range of hot food. Custom technical shirts and awards are offered; to guarantee a shirt, register by January 15. Visit the organization's website for the most recent information.

Race information

48 km
48 Hours
12 km
12 Hours
12 km
12 Hour Night
6 km
6 Hours
3 km
3 Hour
3 km
3 Hour - Sunday
3 km
3 Hour - Saturday
Visit the organization's website for the most recent information.
Trail runs nearby

Halloween Havoc at Dunn Cemetery is a 3.75-mile out-and-back trail race held on the Pioneer Trail in Jennings State Forest near Middleburg, Florida (1335 Long Horn Rd). Runners traverse a relatively flat loop that passes Dunn Cemetery at th..

Turkey Trails - Jacksonville is a family-friendly running event hosted by Bodies Race Company in Jacksonville, Florida. It offers 5K and 10K races, a Kids Dash, and a 1‑mile untimed option, plus a virtual variant for remote participation. C..

Festivus 100/50 Miler Trail Run : Dec 6, 2025 The Festivus Trail Run is a trail running event held in Middleburg, Florida on Saturday, December 6, 2025. The listed venue address is 2A Live Oak Lane. The event page links to a race website (s..

Last H.I.M. Standing is a running event in Jacksonville, Florida, held at 13130 Bartram Park Blvd. The race uses a last-man-standing backyard ultra format: competitors must complete a 4-mile loop every hour on the hour, with the aim of outl..

Candy Cane Course - Jacksonville is a holiday-themed race by Bodies Race Company in Jacksonville, Florida. The event offers 1 mile, 5k, and 12k options, plus a Kids Dash, a virtual race, and volunteer opportunities. The location is listed a..

This ain't your Mothers 50k & Trail Marathon is an annual trail running event held in Middleburg, Florida, within the scenic Jennings State Forest near Jacksonville. The race features multiple distances including a 50K, trail marathon, 12K,..