Giant Acorn Triathlon
Always double-check with the organizer's website! This page may contain affiliate links.
Giant Acorn Triathlon Festival
The Giant Acorn Triathlon Festival takes place September 25-26, 2027 at Lake Anna State Park in Virginia. The event includes Olympic and Sprint triathlon and aquabike options staged from a sandy beach with a rectangular time trial swim course. Sighting buoys are placed about every 75 meters and water temperatures at this part of the lake typically register in the low 70s. Bike courses use rural country roads with rolling terrain and lollipop-style routing. Run courses remain entirely inside the state park, are paved and heavily shaded, and include a downhill section leading into the finishing chute.
Distances offered:
- Olympic: 1.5K swim, 24.6 mile bike, 10K run
- Sprint: 750 m swim, 15.5 mile bike, 5K run
Packet pickup is available at the race site on two separate days; participants must collect their own packet and show photo identification. The event is USA Triathlon sanctioned and offers multiple scoring categories including Age Group, Aquabike, Military, Clydesdale, Athena, Collegiate and Relay teams. Registrations are non-refundable but there are insurance and one-time deferral options. A "Do the Double" option provides a 20% discount when registering for both weekend races. Lake Anna water quality is monitored for harmful algal blooms and the swim will be canceled if conditions are unsafe. Bicycles remain in transition until the bike cutoff or the last runner exits transition. Visit the organization's website for the most recent information.
