Sombrero Sizzler
Jacksonville, United States • 18 Jul 2026
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.