The Peterson Ridge Rumble, set for April 12, 2026, in the charming town of Sisters, Oregon, offers an unforgettable trail running experience through the scenic Peterson Ridge and Metolius-Windigo multi-use trails. Runners can choose from three distinct distances: a challenging 40-mile ultra, a robust Marathon (approximately 27-28 miles), and a lively 20-mile race. This "fun, low-key event" is renowned for its community spirit and well-supported courses, making it a favorite among Central Oregon trail runners. Typical race day conditions in mid-April feature highs around 59°F and lows near 30°F, with a low chance of precipitation, though participants should be prepared for potential mud and even snowy sections on the trails.

The courses are primarily singletrack trail with some dirt road sections, offering a mix of terrain that keeps things engaging without being overly steep. The 40-miler, boasting approximately 2,700 feet of vertical gain, features a progression from gentle uphills and downhills to "long, 2-mile uphill grinders" in the third quarter, culminating in a fast, mostly downhill finish with "sweet views" of the Central Oregon Cascades peaks. The Marathon largely mirrors the 40-mile route for its initial 24 miles, while the 20-miler presents a more balanced profile of gentle uphills followed by rewarding downhills, all while showcasing breathtaking mountain vistas. All races conveniently start and finish at Sisters Middle School.

What truly sets the Peterson Ridge Rumble apart is its welcoming atmosphere, often staffed by enthusiastic volunteers from the Sisters High School Cross Country team, a direct beneficiary of the race. Aid stations, strategically placed every 3-7 miles, are well-stocked, with the longer distances offering drop bag and limited crew access, while the 20-mile route is designed for self-supported enjoyment. Notably, the 20-mile race is celebrated as one of the most "dog-friendliest trail races," allowing canine companions to join their human partners on the trails. Finishers are rewarded with custom socks and can enjoy post-race burritos and treats, with showers available to refresh after a fantastic day on the trails.