HAGG Lake Triathlon & Multi-Sports Festival
HAGG Lake Triathlon & Multi-Sports Festival logo

HAGG Lake Triathlon & Multi-Sports Festival

Gaston, Oregon, United States View on map
Jun 20, 2026 – Jun 21, 2026 (America/Los_Angeles local time)
Running

About this race

RACE AT THIS HISTORICAL EVENT AND STUNNING VENUE!

Hagg Lake Triathlon – Rich in Beauty, Rich in Tradition!

Come race at the 45th Anniversary of the Annual Hagg Lake Triathlon & Off-road Endurance Sports Festival, one of the oldest and most gorgeous Triathlon courses in the nation! Now offering an Off-Road Triathlon, Half Marathon Trail Run, 5K Trail Run & Camping!

Olympic & Sprint Triathlon, Duathlon & AquaBike & NEW OFF-ROAD SPRINT TRIATHLON, DUATHLON & AQUABIKE, Half Marathon Trail Run, and 5K TRAIL RUN!

The modern sport of triathlon had its modest beginnings with an event held in Mission Bay in San Diego, CA on September 25, 1974. There were 46 athletes that day. Seven years later, Hagg Lake Triathlon became one of six stops on the Bud Light Triathlon Series Tour drawing about 500 athletes, with Dave Scott coming out on top. Today, as one of the nation’s oldest and longest-running triathlon events, Hagg Lake enters its 38th year and it continues to draw upwards of 700+ athletes. Its popularity is rooted in the rich tradition and the exceptional venue, which is one of the most scenic in the country. The Hagg Lake course offers a true test of this terrific sport with its rolling hills on both the bike and run leg portions of the event. Make the Hagg Lake Triathlon & Off-road Endurance Sports Festival one of your summer stops and compete on the course that has seen many of the greats in the sport of triathlon.

Pick your distance

Trail running

Trail 5K - Sunday

Jun 20, 2026 5K 9:00 AM
$64.00
Closed

Running

Virtual Half Marathon Trail/5k

Jun 20, 2026 5K 8:00 AM
$50.00
Closed

Typical race-day weather

Based on 5 years of historical conditions on this event's race dates in Gaston.

Temp (°C)
Minimum temperature (race-day average) 13.3° / Maximum temperature (race-day average) 29.3°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-day average) 13.3° / Maximum feels like — heat index / wind chill (race-day average) 31.4°
Wind (km/h)
Average wind speed (race-day average)
15.5
Precip (mm)
Average precipitation (race-day average)
0.0mm
Humidity
Average relative humidity (race-day average)
58.9%

Course

Route map and elevation profile

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.

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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, 2 Gaston events

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