Marine O'Brien Ski Race

January 28, 2018 – William O’Brien State Park

Registration for the 2018 Marine O’Brien Ski Race registration is now open!*
(Registration details and a note about the 2017 event below.)

25k/12.5k Skate & Classic Races, 6k Wood Ski Race, and Children’s races.

Proceeds from this race benefit the St. Croix Valley Ski Club youth skiing program at Wm. O’Brien State Park.

Race Details

Start Times

  • Wood Ski Tour (6 km): 10:10 AM
  • Adult Race Classical (12.5 & 25 km): 10:30 AM
  • Adult Race Skate (12.5 & 25 km): 11:00 AM
  • Children’s Races: 1:45 PM


  • Day-of registration and packet pickup opens at 9:00 AM and closes 30 min prior to race start.
  • Online registration is now open!
  • *If you registered for the (cancelled) 2017 event you will be emailed a PROMO code to use for free entry to the 2018 event. (Please contact us using the form below if you haven’t received your code.)

Race Course

  • William O’Brien State Park Trail Center (located on west side of Hwy 95 approx. 2 miles north of Marine on St. Croix)
  • Races are kicked off in the morning with an 6 km Wood Ski Tour over mostly flat and moderately hilly terrain.
  • Adult Races are 12.5 & 25 km (single and double loop), circling William O’Brien State Park on both flat and hilly terrain.
  • Please note: State Park vehicle permits are required to enter!

Awards & Raffle

  • Top three places in the 12.5 & 25 km skate and classical races, male and female, will receive an artisan crafted mug and a custom “woodal” commemorating their victory. Adult awards ceremony will occur immediately following the race.
  • All children will also receive awards at ceremony immediately following their race.
  • In addition, all adult racers have a chance to win prizes donated by local businesses (totaling over $3,000 value) via raffle. No awards will be mailed.

A big thanks to our sponsors!

Hammer Nutrition

45 Degrees

Road ID


First 100 adults to register online in advance for the 25km and 12.5km races receive a  free Marine O’Brien Ski Race hat.

Questions? Contact us.