Snow Depth and Groomed Trail Conditions

William O'Brien State Park

Trail conditions:

Thank you to all skiers for the great ski season! Due to rain on 3/16, conditions became too icy for the safety of skiers and grooming. At this park, ski passes are no longer required but skiing is still allowed; trails are open to all recreational use including hiking and skiing.

Trail conditions: closed
Trail groomed? no
Trail base: 4"
Trail mileage: 24
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.
  • Ski passes are sold at the park office when it is open.
  • Winter camping is available on a first-come, first-served basis.

William O'Brien State Park home page »

Last updated on March 17, 2023. Local snow depth is 16".

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 »