Ty Olson finishes solo ski trek across top of Minnesota The trip from Rainy Lake to Lake Superior took 27 days, and covered 270 miles, as he raised $43,000 to heat homes on a South Dakota reservation. 8:11 am, Mar. 10, 2021 × Ty Olson skied solo along the Minnesota-Ontario border for 250 miles, retracing the ancient route used by Native people and voyageurs and raising money for a Lakota nonprofit to pay for firewood to heat homes on the Pine Ridge Reservation. (Photo courtesy of Ty Olson) Ty Olson finished his solo ski trek across the top of Minnesota late Tuesday, finishing the 270-mile journey three days early and with more than $43,000 raised to help heat homes on a South Dakota Indian reservation.