Triathlon Calendar near Marbury 2025-2026

Sep

28

Sunday

VentureQuest Adventure Race

Fairfax Station | 18 mi from Marbury

Multisport

VentureQuest Adventure Race, produced by EX2 Adventures, returns to Fountainhead Regional Park in Fairfax Station, Virginia, for its 22nd edition. The event offers two course options, an 8-hour and a..

Oct

5

Sunday

Team River Runner Biathlon

Northwest Washington | 25 mi from Marbury

Multisport

Team River Runner presents the 21st Annual D.C. Biathlon, a hybrid race held in Washington, DC’s Georgetown at The Washington Canoe Club (3700 K St. NW, DC 20007). Participants can choose the TRR Biat..

Apr

25

Saturday

Spring Bloom Adventure Race

Fredericksburg | 25 mi from Marbury

Multisport

The Spring Bloom Adventure Race takes place in Fredericksburg, VA on April 25, 2026 at 6600 River Rd. The event offers a full-day 15-hour race and shorter 4-hour races, including a 4-hour "no-bi..

Jun

7

Sunday

Cal Tri DC

Marbury

Triathlon

2026 Cal Tri DC takes place at Sweden Point Marina in General Smallwood State Park, Marbury, Maryland, about 30 miles south of Washington, DC. The event offers 18 options across Olympic, sprint, and y..

Dec

31

Saturday

Arsenal Triathlon

Stafford | 17 mi from Marbury

Triathlon