350 Harbor Drive, Duluth MN
Friday, September 18th, 2026
🏃♂️ Event Overview
Founded in 1996, the NorthShore Inline Marathon is dedicated to spreading the love of inline skating and overall fitness. Every year thousands of athletes of all ages come to Duluth to participate in this one-of-a-kind event. The NSIM offers a historic route, great views, and an even better community. It has been called one of the best inline marathons in the world by countless publications and has become a tradition for many. Come join us this year for our 28th year of skating.
🏃♀️ Running Divisions
- St. Luke's Half Marathon: One of Minnesota's most beautiful half marathons, beginning on the scenic North Shore highway.
- Course Highlights: Runners make their way through the Northland woods, passing through the tunnels of Interstate 35, and finish alongside the iconic William A. Irvin.
- Finden Marketing Tunnel 10k: Offers runners a unique experience of traversing the I-35 tunnels.
- Distance: Covers 6 miles of interstate before finishing near the William A. Irvin.
⛷️ FinnSisu Ski Division
- Emerging Division: An exciting part of our race series.
- Options: Two choices available for roller skiers: a 42k and a 21k Rollerski.
- Community Experience: Participants ski alongside over 2,000 inline skaters.
- Atmosphere: Immerse yourself in the event's lively atmosphere!
🎉 Join Us!
Bring friends, make memories, and skate on!
📍 Event Details
- Date: 2026-09-18
- Location: 350 Harbor Drive, Duluth, MN
- More Information: NorthShore Inline Marathon Website
Course Map
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