Marin Ultra Challenge
Mill Valley, CA
Jun 3, 2023
- 50 Miler, 50K
- Trail (Unpaved)
- Official race website

2023 EVENT POSTPONED FROM MARCH. *** The Marin Ultra Challenge, our premier Marin County long distance trail race, delivers ample hills and sweeping descents. Meticulous effort went into the design of each course for the MUC; all three distances are physically demanding (the 50 Mile has just about 11,000 feet …
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Local Historical Weather (Jun 03):
2022 | 2021 | 2020 | 2019 | 2018 | |
H (°F) | 68 | 70 | 85 | 68 | 74 |
L (°F) | 56 | 53 | 58 | 54 | 55 |
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