Florida ANVIL Ultra Triathlon
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Event overview
The Florida ANVIL takes place February 19-21, 2026 at Lake Louisa State Park in Clermont, Florida. The event is organized by Mammoth Endurance and uses short, repeatable loops inside the state park. Registration is completed online and closes February 16, 2026. Double ANVIL solo and team athletes must submit a doctor-signed Medical Release Form one month before the race.
Race formats and distances
- Single Anvil Triathlon: 2.4 mile swim, 112 mile bike, 26.2 mile run.
- 1.5x Anvil Triathlon: 3.6 mile swim, 168 mile bike, 39.3 mile run.
- Double Anvil Triathlon: 4.8 mile swim, 224 mile bike, 52.4 mile run.
- Single Aquavelo: 2.4 mile swim, 112 mile bike.
- Double Aquavelo: 4.8 mile swim, 224 mile bike.
- Single Duathlon: 112 mile bike, 26.2 mile run.
- Double Duathlon: 224 mile bike, 52.4 mile run.
- Relay Double Anvil Triathlon: 4.8 mile swim, 224 mile bike, 52.4 mile run (per-person entry listed).
Entry fees are published for each category on the event registration pages.
Course and race rules
The swim is in Lake Louisa with a 2,112 foot / 644 meter loop and a 1,056 foot / 322 meter swim line. The lake is shallow, reported no deeper than 8 to 9 feet, and typical water temperatures have averaged 65 to 70 degrees F; wetsuits are recommended. Swim caps provided by the organizer must be worn and flotation devices and fins are not permitted.
The bike loop is 6.009 miles (9.670 km) out-and-back inside the park; some categories start with a partial lap before repeating full laps. The course was measured with a Jones Counter. Helmets meeting ANSI/Snell standards are required, drafting is prohibited, and lights are required for night riding. No headphones are allowed.
The run loop is 1.00769 miles (1.621719 km) on asphalt. Crew support must be done from the athlete village; crew are not allowed on course. Lighting and visibility equipment are required when it is dark. Visit the organization's website for the most recent information.
