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Marathon | Half Marathon | Tunnel 10k | 39.3 Combined


NSIM 2023 Skate Logo

September 14th, 2024 | Duluth, Minnesota

Our skating races are unlike any other and have been named one of the best races in the world by countless publications. Join us and over 2000 skaters as we skate along the beautiful shores of Lake Superior. Starting in 1995 the NorthShore full marathon is one of the oldest marathons in the world. Past competitors include Olympians, NHL players, and the founder of Rollerblade himself. Our events offer six unique races for participants ranging from Elite competitors to recreational skaters. These include our full marathon, half marathon, 10k, combined half and full marathon, and our virtual race series. Keep reading to learn more about the race!

NorthShore Inline Marathon

26.2 Miles | point-to-point 

Skate along the scenic North Shore of Lake Superior, on our 26.2 mi point-to-point course. Enjoy our spectacular route nestled through the forests of northern Minnesota. The course starts from the north shore community of Two Harbors and winds its way down to finish in Downtown Duluth. You will travel along the scenic North Shore drive and finish alongside the famous William A. Irvin freighter as fans cheer you on.

Join one of the most sought after events in Inline Skating and enjoy the beauty of fall on the North Shore of Minnesota

NortShore Starting Line 2020
NorthShore Inline Marathon Elite Skaters
Elite Division -
NorthShore Inline Marathon

26.2 Miles | point-to-point

Bringing in some of the biggest names in Inline Skating. The Elite division of NSIM is one of the top races in the world and has featured the likes of  Olympians, professional speed skaters, and NHL players. Compete with the best of the best in pursuit of our competitive purse. To learn more about our elite division email

NorthShore Inline Half Marathon

13.1 Miles | point-to-point 

Go 13.1 miles from the Marathon's halfway point to the finish. Enjoy super scenic views of Lake Superior’s North Shore, skate through Duluth’s Lakeside neighborhood, and onto the I-35 Interstate Highway to the finish alongside the famous William A. Irvin freighter as fans cheer you on.

This is a perfect race for new skaters and allows for a great taste of what our full marathon has to offer. 

NorthShore Inline Marathon Casual Skaters
NorthShore Inline Marathon Kid Skaters
NorthShore Tunnel 10k

6.2 Miles | point-and-back

This family-friendly event is a non-competitive fun skate for anyone looking for less than the challenge of a half marathon. Nearly 100% on I-35 Interstate Highway, travel through six tunnels in this unique skating experience! This race finishes alongside the famous William A. Irvin freighter as a crowd of fans cheer you on.

This is a fantastic option for new skaters and offers a relatively flat race route for those who don't like skating on hills.

Combined NorthShore Inline 

39.3 Miles | point-to-point 

Do you have what it takes to skate 39.3 miles in one morning? For the Combined 39.3 Miles, skaters race the half marathon, hop on the bus for a short rest, and then race the full marathon to compete for the fastest combined time.

This race is not for the faint of heart and is one of the most challenging races we offer. 

NorthShore Inline Marathon Elite Skaters
NorthShore Inline Marathon
Half Skate
Tunnel 10k Skate
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Skate Info

The NorthShore Skating Experience

NSIM Price Chart Skate

The NorthShore Race Course

NSIM 2023 Race Maps Full Marathon
NSIM 2023 Race Maps Half Marathon

Important Dates & Times

Friday, September 13, 2024:

Skate and Health Expo​

All-day Friday check out vendors from Duluth, the inline skating industry, and plenty of other outdoor and adventure companies. In addition, clinics will be going on all day. This is a great opportunity to strap on your skates, try something new, or just join in for fun! These clinics are for all levels of skaters. Outside the expo area will be our skatepark and skate cross course.

  • 12:00 to 9:00 pm -  Skate & Health Expo | DECC South Pioneer Hall - Free

  • 12:00 to 9:00 pm - Packet Pickup | DECC South Pioneer Hall

  • 12:00 to 9:00 pm - Inline Training & Health Sessions (TBA) | DECC South Pioneer Hall - Free

  • 7:00 pm  -  Friday Night Skate | NSIM finish Line - Free

Competitive Inline Sprints 

Don’t forget about the annual Inline Sprints! The races are free for kids. Registration begins at 4:00 pm at the Info Booth, races begin at 4:30.

  • 4:00 pm  -  21st Annual Kids Sprints Registration | DECC Finish Line- Free 

  • 4:30 pm  -  Sprints Waves Start | DECC Finish Line

Saturday, September 14, 2024: (Start times)


Skating | NorthShore Inline Marathon

  • 8:43 am - Elite Men Call Ups

  • 8:44:30  - 30 Second Warning

  • 8:45 am - Elite Men Start (Open & Masters)

  • 8:46 am - Elite Women Call Ups

  • 8:46:30  - 30 Second Warning

  • 8:47 am - Elite Women (Open & Masters)

  • 8:55 am - Advanced Wave 1

  • 8:57 am - Advanced Wave 2

  • 9:01 am - Rec Wave 1

  • 9:03 am - Rec Wave 2

  • 9:05 am - Rec Wave 3

  • 9:07 am - Combined Skaters Start​

Skating | 10k & Half Marathon:

  • 6:45 am  -  Half Marathon Skate Mass start (gun start)

  • 7:00 am  -  St. Lukes Wheels Off Half Marathon Run Start (Runners)

  • 7:45 am  -  Tunnel 10k Skate Mass start |  Details on starting location below

  • 8:00 am  -  Tunnel 10k Run Mass Start    | Details on starting location below

2024 NSIM Award Ceremonies:

  • 12:00 pm  - 10k Skate, Half Marathon Skate Awards - DECC South Pioneer

  • 2:30 pm  -  Inline Marathon and Combined Skate Awards- DECC South Pioneer Hall

2024 Social Skates:

  • 7-9 pm  - Skate Jam with the Northwoods Band | DECC South Pioneer Hall (Weather Permitting) 

Saturday, September 14, 2024: (Race Day)


Bus Loading Times: - Busses are located outside of the DECC's parking ramp

  • 5:15 am-5:45 am - Half Marathon (Skate, Ski and Run)      

  • 6:30 am-7:00 am - Elite (Open and Masters)                                  

  • 6:45 am-7:15 am - Advance Waves (1-2)   

  • 7:00 am-7:45 am - All Recreation Waves (1-3)                             


NO Rec Wave 3 skaters are not permitted to board the buses until 7:00 am

For those coming from Two Harbors, it is permissible to be dropped off at the Two Harbors Sonju car dealership and walk or skate to the start line.

10k skaters and runners do not require bussing. 

10k Runners & Skaters will walk to the starting line.

Other Important Information

Gear Bags

Gear bag trucks will be at the starting line for the half and full marathons so you can bring items to the start (sweatshirt/jacket, shoes, warm-up gear, food, etc…). Please note that you may NOT wear skates onto the start line buses. Gear bags will be delivered to the finish line area by the time you are finished with your race.


  • Half Marathon Skate and Rollerski gear bag truck will be in front of the start line and will depart at 6:30 AM.

  • Half Marathon Run gear bag truck will be behind the start line (near bus drop-off area) and will depart at 6:45 AM.

  • Elite and Rollerski Marathon gear bag truck will be in front of the start line and will depart at 8:25 AM.

  • Marathon (Advanced and Rec wave) gear bag truck will depart at 900 AM.

  • Tunnel 10k Skate participants will have the option to leave gear in a drop bag inside South Pioneer Hall (DECC) before the race and may be picked up once you finish.

We are not liable for lost or damaged items. Please do not include anything valuable or fragile in your drop bag.

Packet Pickup

Packet Pickup:

Your Race Packet contains a unique race bib and timing ankle strap, race shirt, pins, athlete guide, and sponsor goodies. Please make every effort to pick up your own packet on Friday.

Friday, September 13th, 2024 | noon – 9 pm

Pioneer Hall at the Duluth Entertainment Convention Center (DECC) | Duluth, MN

Race Timing 

Race Timing

Your race packet will contain an envelope with a Race Bib with a disposable MyLaps Chip, provided by Endurance Promotions (our contracted timing company for the NorthShore events) out of Maple Grove, MN. 


Race Bibs

If you would like your name printed on your bib you must be registered by August 20th. Do not fold, wrinkle, or alter these numbers. The custom bib with chip should be pinned to your chest or abdomen area, and if you are a skater or rollerskier the second black and white bib should be pinned to your right hip.

Lodging & Transportation Information

NorthShore Lodging 

The NorthShore Inline Marathon loves having out-of-town visitors for our event. Because of that, we have made partnerships with local hotels and motels in the area to get you the best deals and a place to stay. Click lodging to learn more.

(Make sure to book early as it fills up fast!)

Our Lodging Partners: 

Flying to Duluth or Minneapolis

The Duluth International Airport offers great flight packages for anyone coming from across the country. This is our recommended route for anyone who plans to fly to our event. We then recommend renting a car, taking an uber/taxi, or calling your hotel shuttle to pick you up. 

If the Duluth International Airport may not meet your needs, the Minneapolis-St. Paul International Airport (MSP) is another great option. Located just over two hours south of Duluth, MSP offers a wide variety of flights and is one of the largest airport hubs in the midwest. For more information on MSP check out their website here: MSP International Airport


Transportation from MSP/Minneapolis to Duluth

Being the largest inline marathon in North America, the event draws crowds from across the country and internationally. With so many participants flying to MSP, the NorthShore Inline Marathon has created a partnership with a local transportation company that will pick you up from the MSP Airport and bring you round trip to and from Duluth. For more information on this program make sure to contact our transportation partner: 

Past Results 

Have you done NSIM in the past? Check out the link below to see your previous times.


Thank you to our friends over at Duluth Timing for their continuous support and for helping us with our timing needs.

Safety Protocols


On the recommendation of the USOPC, in partnership with our medical provider, our events will follow local public health guidelines for COVID-19 risk mitigation.

Helmets are mandatory at all times while on the racecourse for skating and rollerski races. Wrist, knee, and elbow protection is also recommended.

Rollerskiers are asked to stay to the right of the roadway. All slower athletes please stay towards the right, all faster athletes please pass on the left and announce yourself as you pass.

The entire course for all NorthShore Races is completely closed to outside traffic. All event participants must be at 26th Avenue East (entrance to the freeway) by 1:30 pm to be able to complete the event. This is Mile 23. The course MUST be open to traffic at 2 pm.

Please be mindful of road conditions. We strive to maintain the best road conditions possible, thanks to local entities like the Minnesota Department of Transportation, the City of Duluth, Saint Louis County, and Lake County. However, there is always the possibility of cracks, “tar snakes”, bumps, sand and rocks, water bottles, garbage, and other debris or obstructions.

First aid will be available on the course and at the finish line. There are vans and motorcycles on the course with medical personnel. All medical expenses incurred by participants are the responsibility of the participant.

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Holiday Inn & Suites Logo
Pier B Logo

2023 Presenting Partners

St. Luke's Major Sponsor of the NorthShore Inline Marathon
Finden Marketing Major Sponsor of the NorthShore Inline Marathon
Rollerblade Major Sponsor of the NorthShore Inline Marathon

Contact Our Team

Have any questions? Make sure to get in contact with us. We are happy to answer any questions.

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