Trail runners of all levels can find the perfect summer training program in Duluth, Minnesota with NorthXC's offerings tailored to different age groups. Teens aged 14-19 can participate from June 8th through August 7th, 2026, while college-aged athletes (19-23) have the option to join NorthXC X from June 1st to August 15th, 2025, and younger participants aged 10-14 can build skills through Nordic North Stars, a roller skiing program running from June 16th through August 5th.