Immerse yourself in the natural beauty of Portland's iconic Forest Park during the Stumptown Trail Runs, scheduled for Memorial Day weekend on May 23–25, 2026. This premier trail racing event offers runners two distinct distances that showcase the park’s lush and hilly terrain. The 50K race takes place on Saturday, May 23 at 8:00 AM, offering a challenging yet rewarding journey through Forest Park's extensive trails. With an elevation gain of approximately 4,000 feet, this ultramarathon is unique as it remains entirely within Portland city limits. Runners will traverse the famous Wildwood Trail and enjoy the vibrant spring greenery that blankets the park. For those seeking a more moderate challenge, the Half Marathon on Monday, May 25 at 8:00 AM provides an equally scenic route with an elevation gain of about 2,000 feet. Both races feature fully stocked aid stations staffed by volunteers dedicated to ensuring racer safety and promoting trail etiquette. Produced by Go Beyond Racing, the event places a strong emphasis on environmental sustainability through rigorous waste reduction strategies that include recycling at all aid stations. The race also adheres to strict organizational standards with a capacity of 200 runners for each distance, often selling out well in advance due to its popularity among local and visiting trail enthusiasts. Registration closes on Friday, May 15, 2026, at 6:00 PM PT, so early sign-up is recommended. Cancellation policies allow for a credit of 50% if the race is canceled more than 30 days in advance; however, no refunds or transfers are permitted within this period. Awards will be given to top finishers in Men's, Women’s, and Non-Binary categories at both distances, celebrating the spirit of competition while fostering a sense of community among participants. The Stumptown Trail Runs offer an unparalleled opportunity for runners to escape into nature just minutes from downtown Portland, making it a beloved event within the local trail running scene.
Races Offered
Half Marathon
May 23, 2026
straighten
Distance —
21.1K
terrain
Type —
Running
timer
08:00
sell
$95.00
50K
May 25, 2026
straighten
Distance —
50K
terrain
Type —
Running
timer
08:00
sell
$150.00
Weather History
These values represent the 3-year monthly averages for May in Portland.
thermostatTemperature
8.7° / 19.9°
wb_sunnyFeels like
6.8° / 17.7°
light_mode
Avg sunshine hours
10h 50m
water_drop
Avg rainfall
2.1 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
8.2 km/h (Light breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (4.2)
humidity_mid
Humidity
70.1%
wb_twilight
Sunrise
05:38
nightlight
Sunset
20:34
About Portland
Learn more about the host city, Portland.
Few American cities can match the youthful spirit of Portland, "The City of Roses". The largest city in the state of Oregon, Portland's residents are proud of their city, which draws people for its scenic beauty, great outdoors environment, excellent microbreweries, and eco-friendly urban planning policies, as well as a reputation for colorful characters and a proudly liberal outlook with an attitude to match.