In 41 days · Fri, Sep 18, 2026
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Friday, September 18th, 2026
350 Harbor Drive, Duluth MN
Marathon · Ultra · Half · 10K
56–68°F · some rain risk
See last 10 years
On this date: rain 1 of the last 10 years
2025
56–65°F
dry
2024
69–83°F
dry
2023
51–65°F
dry
2022
61–69°F
dry
2021
52–68°F
dry
2020
44–57°F
dry
2019
66–79°F
rain
2018
56–59°F
dry
2017
50–61°F
dry
2016
55–73°F
dry
Best months to race in Minnesota →
About this race
Event Overview
- Date: 2026-09-18
- Location: 350 Harbor Drive, Duluth, MN
- Founded: 1996
- Website: NorthShore Inline Marathon
Description
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 Division
- St. Luke's Half Marathon: One of Minnesota's most beautiful half marathons, starting on the scenic North Shore highway.
- Race Route: Runners journey through the Northland woods, passing through the tunnels of Interstate 35.
- Finish Line: The race concludes alongside the iconic William A. Irvin.
- Finden Marketing Tunnel 10k: A unique 10k experience through the I-35 tunnels, covering 6 miles of interstate.
FinnSisu Ski Division
- Options: Participants can choose between a 42k and a 21k Rollerski.
- Skill Levels: Open to roller skiers of all skill levels.
- Experience: Join over 2,000 inline skaters in an immersive, lively atmosphere.
- Community: The ski division is an emerging part of our race series, enhancing the event's diversity.
Join Us!
Bring friends, make memories, and skate on!
Course map
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