Saturday, September 4, 2027Enumclaw, WA
Fall - Mud Mountain Dam Marathon & Half Marathon
2 events
- Fall - Dam MarathonMarathonRoadStarts 7:00 AM
- Fall - Dam Half MarathonHalfRoadStarts 8:15 AM
Location
Approximate, from the race's ZIP code.
Typical race-day weatherIdeal weather · 90/100
- High / low
- 69° / 46°F
- 21° / 8°C
- Humidity
- 68%
- Dew point 43°F
- Chance of rain
- 21%
- Wind
- 4 mph
- Average
- Usually ideal weather for a marathon.
Averages for this area and time of year over the last 20 years, from NASA POWER data. Not a forecast.
Past results
- Typical timesFinish times are typical for half marathons.3 years, 646 finishers; men and women compared separately.
- 4% fasterFinish times are typically 4% faster than at other 5Ks.2 years, 258 finishers; men and women compared separately.
- 6% fasterFinish times are typically 6% faster than at other marathons.1 year, 175 finishers; men and women compared separately.
| Year | Event | Finishers | Median | Men | Women |
|---|---|---|---|---|---|
| 2026 | Fall - Dam Marathon · Marathon | 175 | 4:12:56 | 3:54:50 | 4:28:49 |
| 2026 | Fall - Dam Half Marathon · Half | 239 | 2:16:27 | 2:05:43 | 2:25:42 |
| 2025 | Dam Half Marathon · Half | 185 | 2:07:59 | 2:03:48 | 2:14:19 |
| 2025 | Dam 5K · 5K | 127 | 36:10 | 30:24 | 37:10 |
| 2024 | Dam Half Marathon · Half | 222 | 2:02:23 | 1:53:09 | 2:08:46 |
| 2024 | Dam 5K · 5K | 131 | 34:43 | 30:29 | 35:40 |
Median finish times from results published on RunSignup. Keyrace keeps only these summaries, never individual results. A fast or slow field affects times as much as the course does.