Portland Trail Series - Summer

The Portland Trail Series - Summer returns to the lush trails of Forest Park in Portland, Oregon on June 17th for a series of evening races that extend through August. This super-cool, low-key event offers runners five unique opportunities to explore different routes within beautiful Forest Park, each ranging from four to seven miles and starting at precisely 6:15 pm every other Wednesday throughout the summer months.
As twilight descends over Portland’s iconic Forest Park, a sense of community and adventure fills the air. The park's dense canopy provides shade during warm evenings, while soft breezes carry scents of pine and wildflowers through the trails. With each race taking place in different parts of this expansive urban forest, participants experience the varying landscapes—from winding paths along rippling streams to steep climbs offering panoramic views of Portland’s skyline. Each evening brings a new story as runners connect with nature and their fellow athletes under the fading light.
The Summer Series has become an integral part of Forest Park's vibrant summer calendar, celebrating its return year after year since 2016. With hundreds of dedicated participants each season, this event not only promotes physical fitness but also supports environmental conservation efforts through its partnership with the Forest Park Conservancy. Attracting runners from all walks of life who appreciate a challenging yet laid-back atmosphere, the series culminates in an awards party at Lucky Labrador Beer Hall on August 12th to honor top performers and age group winners alike.

The Summer Series courses traverse various terrains within Forest Park’s extensive network of trails. Each route is designed to showcase different aspects of this urban wilderness—some feature rolling hills, others meander through dense foliage near bubbling streams. The terrain varies from firm paths suitable for running shoes to softer surfaces where trail runners find their footing.
Registration and bib pickup take place at the race venue in Forest Park on the day of each event. Participants can register right up until start time by paying $25 cash, though online registration is recommended through the link provided: https://ultrasignup.com/register.aspx?did=137914 for early bird discounts and to secure a spot ahead of race day. Bib pickup also occurs on-site at Forest Park before each run.
Participants should be prepared for evening conditions in Portland’s temperate climate during summer months when the series takes place. With average temperatures around 18°C, runners can expect comfortable yet mild evenings with occasional breezes and low humidity levels that make for pleasant running weather. Trail surfaces are typically firm but may have some soft spots, so trail shoes or light hiking boots could be beneficial.
The Portland Trail Series - Summer concludes on August 12th in Forest Park, Oregon, offering runners a chance to explore the city’s natural beauty while supporting environmental conservation efforts and fostering a strong sense of community among local athletes.