Sombrero Sizzler

JUL
18
2026
A timed loop endurance event in Jacksonville on a 1.25 mile paved course, offering 3, 6, 9 and 12 hour formats. A 6 hour relay for four person teams is available and rucking participants must meet weight guidelines.
Sat 18 Jul 2026

Always double-check with the organizer's website! This page may contain affiliate links.

Sombrero Sizzler : Jacksonville, FL

Sombrero Sizzler is a timed loop endurance event organized by Sombrero Running at Cecil Field in Jacksonville, FL. The course is a 1.25 mile paved loop consisting of three quarters asphalt road and one quarter concrete walking path, with a short grassy section at the end. Pine trees line much of the route and provide shade for portions of the day. The loop is described as pancake flat with minimal turns, including five wide left turns.

Race formats run for set durations and include individual and team options:

  • 3 hours
  • 6 hours (relay option available)
  • 9 hours
  • 12 hours

The 6 hour race accepts four person relay teams of any gender, with a limit of ten teams. Rucking participants must follow weight guidelines: women 10 lbs or more and men 20 lbs or more; the event uses an honor system for weight verification and allows plates, bricks, or sandbags.

There is one main aid station at the start/finish pavilion offering standard ultrarunning foods and Skratch Electrolyte. Food will be grilled throughout the day with breakfast items, burgers including vegan options, brats, Italian sausage, and bacon. Awards include overall top three in each event and additional special awards; relay award details depend on participation. Each registered participant receives a custom medal; other swag items are to be determined. Visit the organization's website for the most recent information.

12 Hour
3 Hour
6 Hour
6 Hour Relay
9 Hour

Events nearby

Run or walk 5K, 10K or one mile in downtown Jacksonville on September 26 2026 to raise funds for the Emerald Trail.
Experience the scenic Nocatee Greenway Trails in Ponte Vedra Beach with race distances including 10 miles, 10K, and 5K. This event features road and trail running alongside a dedicated 5K ruck and virtual race options.
A chip-timed 5K run/walk at Congaree and Penn farm in Jacksonville FL on December 5, 2026. Entry includes T-shirt, collapsible cider cup, finisher medal, chip-timed bib, donut and a pour of cider; participants must be 21 plus.
Trail races at Guana Research Reserve on December 6, 2026 featuring 50K, 50K team (2x25K) and 12K on mostly shaded, hard pack trails.
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.