William O'Brien State Park

Trail conditions:

Whoohoo! Isn't it awesome, we finally have some new snow! The groomer was out yesterday, January 21. He combed and re-tracked the trails. Come out and enjoy a beautiful day at the park! We do ask that all snowshoers, hikers, and dog walkers, use the Riverside trail or the trails south of county road 4. There is a parking lot on county road 4, cross the road, head up the hill and start your adventure! Mark your calendars, Sunday, January 26 is the Marine/O'Brien Ski Race! Check Skinny Ski for race forms and information!

Trail conditions: good
Trail groomed? yes
Trail base: 3"
Trail mileage: 24.0
Difficulty: all levels (track)  all levels (skate)

The trail(s):
Ski trails are groomed for both skating and traditional use on the same trail. One set of tracks are on the right side of each trail and an eight foot skating surface is on the left side of the trail.
You can snowshoe anywhere in Minnesota's state parks and recreation areas, except on trails that are specifically groomed for another activity, such as skiing or snowmobiling.


  • A year-round, heated, Visitor Center is located at the park.
  • Daily ski passes are sold at the park office.
  • Winter camping is available on a first-come, first-served basis. Self-registration is available at the park office.

William O'Brien State Park home page »

Last updated on January 22, 2020. Local snow depth is 6".

Getting there

16821 O'Brien Trail North
Marine on St. Croix, MN 55047

The park entrance is located two miles north of Marine on St. Croix on Highway 95. Follow the park road and signs to the Visitor Center.

Parking available at the Visitor Center.


Phone: (651) 539-4980
Email: [email protected]
Park is open 8am - 10pm. Winter contact hours vary. If no one is available, please leave a message.

More Info

Skiing »
Ski pass »
Snowmobiling »