Virginia ANVIL Ultra Triathlon

OCT
8-10
2026
Experience an ultra endurance triathlon at Lake Anna State Park featuring multiple distances and a loop based course with 24 hour medical support and an athlete village.
Middle distance Full distance

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Event Overview

The Virginia ANVIL Ultra Triathlon takes place at Lake Anna State Park in Spotsylvania, Virginia. Organized by Mammoth Endurance, this multi-day event offers various endurance distances held within a natural environment. The event includes a half-distance triathlon and ultra-endurance distances such as the Double ANVIL or Single ANVIL.

Course Layout

The event utilizes a course consisting of short, repeatable loops. This design is intended to maintain participant safety and facilitate frequent contact between athletes and support staff. The central hub of the race is the Athlete Village, which houses the primary aid station. Participants pass through this area on every loop, providing regular access to personal support crews for gear adjustments and refueling.

Support and Services

The event provides several on-site services to assist participants throughout the duration of the race. These include:

  • A 24-hour on-site medical team.
  • An aid station serving prepared food.
  • Support for nutrition and hydration preparation.
  • Access to an Athlete Village for crew support and gear swaps.

Available Distances

The following distances are featured during the event:

  • Double ANVIL: An ultra-distance triathlon (at least double the full triathlon distance).
  • Single ANVIL: A full-distance triathlon.
  • Half ANVIL: A half-distance triathlon.

The event schedule spans multiple days, with setup and start times organized according to the specific distance selected. The ANVIL focuses on building a community environment and providing resources such as training plans and community calls leading up to the race. Visit the organization's website for the most recent information.

281 mi
Double Anvil
141 mi
Single Anvil
Anvil Half Triathlon
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