Happy Girls Run Sisters Half Marathon & 5K

Saturday, October 28, 2023 • Sisters, OR • Course Map

Set for its 10th annual running this fall, the Happy Girls Run Sisters takes runners on a course with stunning views along the Peterson Ridge Trail, a more than 20-mile-long network of mountain biking and hiking trails built on old forest service roads and single-track trails that, depending on the season, can be dusty and loose or packed with snow.

For those running the half marathon, the race follows a loop route that starts along the Peterson Ridge Trail itself, starting and finishing at the FivePine Lodge and Conference center.

Once you start the race, you’ll head north along the trail, winding through the forest as you make your way south away from Sisters, a town of about 2,000 in central Oregon that’s named for the majestic Three Sisters Mountains that look over it in the nearby Willamette National Forest.

The race follows a net zero elevation gain from start to finish, despite the 500-foot elevation gain in the first half of the course. The second half of the course is almost entirely downhill, allowing runners to recover from the first half’s uphill climb. Organizers say the race is designed both for “first-time racers and seasoned runners,” as the terrain can be challenging in spots but overall it’s a hard-packed course.

The terrain is 95% trail, they add, noting that it’s almost entirely single-track trails through the forests and open areas of the Peterson Ridge Trail system. The parts that aren’t trail are the roads you’ll run when you make it into Sisters, on the way to the finish line at the FivePine Lodge and Conference center.

Walkers are encouraged to participate, organizers add, as the cutoff for official timing is 1:00 PM.

Courtesy Happy Girls Run Sisters

Race Weather & Climate

Nestled near the base of the awe-inspiring Three Sisters Mountains in central Oregon, roughly a three-hour drive from Portland, Sisters typically sees chilly weather in October, when temperatures average between the mid-30s to the mid-60s.

On race day (Oct. 28), the average low is 36ºF and the average high is 53ºF.

Past Results

Course Map

See the race route map for the Happy Girls Run Sisters Half Marathon here.

Starting Time

  • 9:00 AM – half marathon
  • 10:00 AM – 5K buddy wave
  • 1:00 PM – 5K

Course Time Limit

4 hours


  • $80 – $99 for the half marathon
  • $35 – $55 for the 5K
  • $38 and up for the virtual race


To reserve your spot in the 2023 running of the Happy Girls Run Sisters Half Marathon or 5K race, register online at Active.com here.

Official Race Website



Ever run in the Happy Girls Run Sisters? Share your impressions here, as well as anything you learned about the race that you think other runners/walkers should know.

See more races — Trail Races, Oregon