Virginia ANVIL Ultra Triathlon

OCT
8-10
2026
A multi-loop ultra triathlon at Lake Anna State Park October 8-10 offering Single, 1.5x and Double distances with looped swim, bike, and run courses, on-site aid, regulated safety measures, and online-only registration.
Single Anvil Triathlon (r... 1.5x Anvil Triathlon (run... Double Anvil Triathlon (r...

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Virginia ANVIL Ultra Triathlon : Lake Anna State Park, Spotsylvania, Virginia

The event runs October 8-10 at Lake Anna State Park and features multi-loop swim, bike, and run courses held inside the park. Courses are well marked and manned by volunteers. The loop format is used to keep athletes within a controlled area and to improve access to medical support and crew involvement from the race village.

Race categories 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.

Swim details: the swim uses a 2,112-foot (644 m) clockwise out-and-back loop around a 1,056-foot (322 m) swim line. Water depths in the swim area are generally 10 to 12 feet or less and typical temperatures average 65 to 70 degrees; wetsuits are recommended. Athletes must wear the provided colored swim cap; timers on shore count laps. Aid floats are available at the main buoy for self-service.

Bike and run details: the bike is a 5.0769 mile (8.169 km) loop; the run is a 1.00769 mile (1.621719 km) asphalt loop. Night lighting and front and rear lights are required when dark. Drafting and headphones are prohibited. Registration is online only; Double entrants must submit a doctor-signed medical release via email one month prior. Visit the organization's website for the most recent information.

52 mi
Double Anvil Triathlon (run)
39 mi
1.5x Anvil Triathlon (run)
26 mi
Single Anvil Triathlon (run)
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