Mainly Marathons Northwest Series Days 3 & 4 (WA)
Clarkston, WA
- 50K, Marathon, Half Marathon, 10K, 5K
- Road (Paved)
- Official race website
Mainly Marathons Northwest Series – Days 3 & 4 (WA) takes place at the Conference Center in Clarkston. The course is a smooth surface on a mix of asphalt, concrete, and pavement with little shade. Number of Laps: 7 for half marathon, 14 for marathon (subject to change).
Local Historical Weather (Sep 21):
| 2025 | 2024 | 2023 | 2022 | 2021 | |
| H (°F) | 71 | 74 | 56 | 77 | 80 |
| L (°F) | 61 | 48 | 51 | 53 | 48 |
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