Cal Tri DC
About this race
2026 Cal Tri DC - 6.14.26. Combine a trip to the nation's capitol with a race venue just 30 miles south of Washington DC in Maryland's General Smallwood State Park.
18 EVENT OPTIONS. 6 Olympic distance events (Triathlon, RunBikeRun, SwimBike, SwimRun, 1640 Yard Swim & 10K Run), 6 Sprint distance events (Triathlon, RunBikeRun, SwimBike, SwimRun, 400 yard Swim & 5K Run) and 6 Youth Sprint distance events (Triathlon, RunBikeRun, SwimBike, SwimRun, 400 yard Swim & 5K Run). Triathlon = swim + bike + run. Typically, the swim and run distances are standard but the bike distance varies from race to race. Check out the course maps for more detailed information.
TO DO. Smithsonian National Museum of Natural History. National Museum of African American History and Culture. US Capitol.
AIRPORT. Ronald Reagan Washington National (DCA)
AIR TEMPERATURE (AVG). 64 F / 86 F
WATER TEMPERATURE (AVG). 82 F. Wetsuit allowed with no results. Use the 20% 2026CALTRI discount code at blueseventy. Note: Fusion wetsuits not eligible for discount.
Pick your distance
Triathlon
Sprint Triathlon
Olympic Triathlon
Youth Sprint Triathlon
Duathlon
Sprint RunBikeRun (5km run, 26km bike, 5km run)
Sprint SwimBike
Sprint SwimRun
Olympic RunBikeRun (5km run, 40km bike, 10km run)
Olympic SwimBike
Olympic SwimRun
Youth Sprint RunBikeRun (5km run, 23.5km bike, 5km run)
Swimming
Sprint Swim (400 yards)
Olympic Swim (1640 yards)
Youth Sprint Swim
Running
5K
10K
Youth 5K
Sponsor - 10x10 Tent
10x10 Vendor Tent (other tent sizes available upon request) 1 Preferred Parking Spot PA Announcements Throughout The Event
Aquabike
Youth Sprint SwimBike
Swimrun
Youth Sprint SwimRun
Typical race-day weather
Based on 6 years of Open-Meteo archive data for this event's race dates in Marbury, plus the 3 days either side.
The sun rises at 5:43 AM and sets at 8:33 PM local time (EDT) in Marbury on June 13, 2027 — 14h 50m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 1 Marbury event
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