O’Brien Trail Races
Marine on St Croix, MN
- 50K, 25K, 5K
- Trail (Unpaved)
- Official race website
- 50K, 25K, 5K
- Trail (Unpaved)
- Official race website
The O’Brien Trail Races are fantastic trail races of either 50k, 10.4 miles or 5k on mostly grass trails. The courses are new – you will likely run two 25k loops on new trails that include new sections of O’Brien State Park and Jackson Meadows. Plenty of rolling hills. Plenty …
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Local Historical Weather (Sep 16):
| 2023 | 2022 | 2021 | 2020 | 2019 | |
| H (°F) | 76 | 77 | 84 | 66 | 84 |
| L (°F) | 54 | 66 | 61 | 45 | 58 |
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the O'Brien Trail Races