October means fall is officially here in Oregon, and for runners, that can mean some of the best running weather of the year. Cool mornings, crisp air, changing leaves, and those occasional perfect fall days make it pretty easy to find a reason to get outside — assuming the rain decides to cooperate.
The October calendar is packed with everything from Halloween-themed 5Ks and community runs to half marathons, full marathons, trail races, ultras, and plenty of events in between. Whether you’re looking for a fall PR, a scenic trail adventure, or just an excuse to put on a costume and go for a run, there’s no shortage of options.
As always, race details can change, so be sure to check the event page before heading out for the latest information on registration, courses, start times, and any other updates. Now grab a jacket, keep an eye on the forecast, and enjoy some of the best running Oregon has to offer this time of year.
| Race Name | Date | Location | Distances | Registration Links |
|---|---|---|---|---|
| Perpetua Coast | October 3-4, 2026 | Yachats, OR | 50K Trail Run | Register Here |
| CASA Fall Family Run | October 3, 2026 | Hood River, OR | 5K, 1M | Register Here |
| HCAO Every BODY In | October 3, 2026 | Corvallis, OR | 10K, 5K | Register Here |
| Hillsboro Schools Foundation Making Strides For Education 5K | October 3, 2026 | Hillsboro, OR | 5K | Register Here |
| HTC High Desert | October 3, 2026 | Prineville, OR | 71M Relay | Register Here |
| Make Miles Matter Community Fun Run/Walk 5K | October 3, 2026 | Klamath Falls, OR | 5K | Register Here |
| McMinnville Education Foundation Runtoberfest | October 3, 2026 | McMinnville, OR | 5K | Register Here |
| Monsters & Mimosas 5K – Diamond Lake | October 3, 2026 | Diamond Lake, OR | 5K | Register Here |
| Oregon Brewery Running Series – Breakside | October 3, 2026 | Portland, OR | 5K | Register Here |
| OXFORD Classic Community 5K | October 3, 2026 | Bend, OR | 5K | Register Here |
| Portland – FoDU 5K for Hope | October 3, 2026 | Portland, OR | 5K | Register Here |
| Run for Resilience Ostomy 5K – Portland | October 3, 2026 | Portland, OR | 5K | Register Here |
| Scappoose Community Race 1K and 5K | October 3, 2026 | Scappoose, OR | 5K, 1K | Register Here |
| Steps to Safety 5K Walk/Run | October 3, 2026 | Salem, OR | 5K | Register Here |
| Lastest Not Fastest | October 3, 2026 | North Bonneville, WA | Last Person Standing | Register Here |
| Talent Harvest Festival | October 3, 2026 | Talent, OR | 10K, 5K | Register Here |
| Backwoods 5K | October 4, 2026 | Hillsboro, OR | 5K | Register Here |
| Condor 25K Trail Run | October 4, 2026 | Corvallis, OR | 25K Trail Run | Register Here |
| Fall Foot Races | October 4, 2026 | Bend, OR | 13.1M, 10K, 5K | Register Here |
| Heaven Can Wait 5K | October 4, 2026 | Redmond, OR | 5K | Register Here |
| Hit the Barlow Trail 5K | October 4, 2026 | Gresham, OR | 5K Trail Run | Register Here |
| Monsters and Mimosas 5K – Windrow Estate Winery | October 4, 2026 | Milton-Freewater, OR | 5K | Register Here |
| Perk Yourself Up 5K and 10K | October 4, 2026 | Canby, OR | 10K, 5K | Register Here |
| Portland Marathon | October 4, 2026 | Portland, OR | 26.2M, 13.1M | Register Here |
| Toga Trot | October 7, 2026 | Eugene, OR | 5K, 2K | Register Here |
| Oregon Track Club Running Series – #8 | October 8, 2026 | Eugene, OR | 5K, 1M | Register Here |
| Champoeg Invitational Open Race | October 9, 2026 | Saint Paul, OR | 5K Trail Run | Register Here |
| Dallas Glow Run | October 10, 2026 | Dallas, OR | 5K | Register Here |
| Oregon Brewery Running Series – 54’40 | October 10, 2026 | Washougal, WA | 5K | Register Here |
| ORRC Best Dam Run | October 10, 2026 | Estacada, OR | 10K | Register Here |
| Rainbow Ridge 20K/50K | October 10, 2026 | Rainbow, OR | 50K, 20K Trail Run | Register Here |
| Rogue Marathon | October 10, 2026 | Medford, OR | 26.2M, 13.1M, 10K | Register Here |
| Run Whiskey Run | October 10, 2026 | Bandon, OR | 10M, 5M, 1.5M | Register Here |
| Fernhill Park Stumptown XC Series | October 10, 2026 | Portland, OR | 5K | Register Here |
| Great Books Tour 5K | October 11, 2026 | Eugene, OR | 5K | Register Here |
| Great Columbia Crossing 10K | October 11, 2026 | Astoria, OR | 10K | Register Here |
| Great Pumpkin Run | October 11, 2026 | Corvallis, OR | 10K, 5K | Register Here |
| Running Scared 5K/13K – Eugene | October 11, 2026 | Eugene, OR | 13K, 5K | Register Here |
| Portland Trail Series – Fall | October 14, 2026 | Portland, OR | 6M, 4M Trail Run | Register Here |
| Silver Falls Trail Runs | October 16-18, 2026 | Silverton, OR | 5K Trail Run | Register Here |
| Rogue Gorge | October 17-18, 2026 | Union Creek, OR | 50K Trail Run | Register Here |
| Elk-Kings Trail Races | October 17, 2026 | Tillamook, OR | 50K, 25K, 11M Trail Run | Register Here |
| Lilly’s Lope for Hope | October 17, 2026 | Philomath, OR | 5K | Register Here |
| Miller Woods 10K and 5K | October 17, 2026 | McMinnville, OR | 5K, 10K Trail Run | Register Here |
| My Unheard Voice: Restoring Hope 5K | October 17, 2026 | Portland, OR | 5K | Register Here |
| Race for the Warriors | October 17, 2026 | Gresham, OR | 5K | Register Here |
| Roseburg Optimist 5K Run/Walk | October 17, 2026 | Roseburg, OR | 5K | Register Here |
| Street Dog Heroes On The Run 5K | October 17, 2026 | Portland, OR | 5K | Register Here |
| Columbia Gorge Marathon and Half | October 18, 2026 | Hood River, OR | 26.2M, 13.1M | Register Here |
| Floss & Run | October 18, 2026 | Portland, OR | 5K | Register Here |
| Future Foxes Fox Trot | October 18, 2026 | Silverton, OR | 5K | Register Here |
| Girlfriends Run for a Cure | October 18, 2026 | Vancouver, WA | 5K | Register Here |
| Regatta Run | October 18, 2026 | Tualatin, OR | 5K | Register Here |
| Run for Health Justice | October 18, 2026 | Portland, OR | 5K | Register Here |
| Run for Your Life 5K | October 18, 2026 | Eugene, OR | 5K | Register Here |
| Viking Family and Friends Mile | October 21, 2026 | Forest Grove, OR | 1M | Register Here |
| Dia De Los Muertos Endurance Run | October 23, 2026 | South Beach, OR | 48H, 24H, 12H, 6H | Register Here |
| USARA Adventure Race National Championship | October 23, 2026 | Bend, OR | 30H Adventure Race | Register Here |
| Ashland Monster Dash Run for Education | October 24, 2026 | Ashland, OR | 10K, 5K, 1M | Register Here |
| Frightfully Fun Run | October 24, 2026 | Salem, OR | 3K, 1K | Register Here |
| Happy Girls Sisters | October 24, 2026 | Sisters, OR | 13.1M, 10K, 5K Trail Run | Register Here |
| Southern Oregon Young Marines DDR 5K/10K | October 24, 2026 | Medford, OR | 5K | Register Here |
| Scary Run | October 24, 2026 | Washougal, WA | 5K | Register Here |
| Spooky Stroll 5K | October 24, 2026 | Lincoln City, OR | 5K | Register Here |
| Blue Lake Park Stumptown XC Series | October 24, 2026 | Portland, OR | 6K | Register Here |
| Suttle Lake Trailfest | October 24, 2026 | Suttle Lake, OR | 24H, 12H, 6H Trail Run | Register Here |
| The Great Pumpkin Run | October 24, 2026 | Portland, OR | 13.1M, 10K, 5K | Register Here |
| Day of the Dead Race 12 | October 25, 2026 | Talent, OR | 10K, 5K, 1M | Register Here |
| Pumpkin 5K | October 25, 2026 | Parkdale, OR | 5K | Register Here |
| Tricky Treater | October 25, 2026 | Eugene, OR | 10K, 5K | Register Here |
| Portland Trail Series – Fall | October 28, 2026 | Portland, OR | 6M, 4M Trail Run | Register Here |
| Run With The Duck | October 30, 2026 | Eugene, OR | 5K | Register Here |
| ADFK 5K | October 31, 2026 | Salem, OR | 5K | Register Here |
| Giddy Up 5K and 5 Miler Ranch Run | October 31, 2026 | Sisters, OR | 5M, 5K | Register Here |
| Oregon Brewery Running Series – Level | October 31, 2026 | Portland, OR | 5K | Register Here |
| Dia De los Muertos | October 31, 2026 | Hockinson, WA | 5K | Register Here |
| Thunder River | October 31, 2026 | Cascade Locks, OR | 50K, 25K Trail Run | Register Here |
