2026 - Grandma's Marathon Race Weekend
2026 distances
Running
William A. Irvin 5K ($50 Team Fee plus $500 fundraising)
Earn your entry to the 2026 entry to William A. Irvin by raising funds and awareness for Semper Fi & America's Fund. Semper Fi & America’s Fund cares for our nation’s critically wounded, ill, and injured service members, veterans, and military families. Supporting all branches of the U.S. Armed Forces, we provide one-on-one case management, connection, and lifetime support. Today. Tomorrow. Together. To learn more about Semper Fi & America's Fund please visit thefund.org. What are the benefits of joining the Semper Fi & America's Fund Team? Complimentary entry to Grandma's Marathon, Garry Bjorklund Half Marathon, or William A. Irvin 5K A dri-fit race shirt and runner's goodie bag! An online fundraising link set up by RunSignUp.com that you can send to your donors. Timely updates from our Race Coordinator. Prizes for the top fundraisers! The heartfelt thanks of the injured Marines, Sailors, Airmen and Soldiers you will be supporting! *Participants must agree to meet the $500 minimum fundraising requirement prior to March 1, 2026.
Great Grandma's Challenge - 5K and Marathon - ($50 team fee plus $1250 fundraising)
Earn your entry to the 2026 entry to Grandma's Marathon and William A. Irvin 5K by raising funds and awareness for Semper Fi & America's Fund. Semper Fi & America’s Fund cares for our nation’s critically wounded, ill, and injured service members, veterans, and military families. Supporting all branches of the U.S. Armed Forces, we provide one-on-one case management, connection, and lifetime support. Today. Tomorrow. Together. To learn more about Semper Fi & America's Fund please visit thefund.org. What are the benefits of joining the Semper Fi & America's Fund Team? Complimentary entry to Grandma's Marathon and William A. Irvin 5K A dri-fit race shirt and runner's goodie bag! An online fundraising link set up by RunSignUp.com that you can send to your donors. Timely updates from our Race Coordinator. Prizes for the top fundraisers! The heartfelt thanks of the injured Marines, Sailors, Airmen and Soldiers you will be supporting! *Participants must agree to meet the $1250 minimum fundraising requirement prior to March 1, 2026.
Grandma's Marathon ($50 team fee plus $750 fundraising)
Earn your entry to the 2026 entry to Grandma's Marathon by raising funds and awareness for Semper Fi & America's Fund. Semper Fi & America’s Fund cares for our nation’s critically wounded, ill, and injured service members, veterans, and military families. Supporting all branches of the U.S. Armed Forces, we provide one-on-one case management, connection, and lifetime support. Today. Tomorrow. Together. To learn more about Semper Fi & America's Fund please visit thefund.org. What are the benefits of joining the Semper Fi & America's Fund Team? Complimentary entry to Grandma's Marathon or Garry Bjorklund Half Marathon A dri-fit race shirt and runner's goodie bag! An online fundraising link set up by RunSignUp.com that you can send to your donors. Timely updates from our Race Coordinator. Prizes for the top fundraisers! The heartfelt thanks of the injured Marines, Sailors, Airmen and Soldiers you will be supporting! *Participants must agree to meet the $750 minimum fundraising requirement prior to March 1, 2026.
Fundraiser Only (already have an entry into the 2026 Grandma's Marathon or Garry Bjorklund Half Marathon)
*Fundraising Only: Please note that this category is for fundraisers only. *$500 suggested fundraising minimum *Registering in this category does not include a race entry.
Race-day weather
Conditions on June 19, 2026 — historical Open-Meteo data.
The sun rises at 5:13 AM and sets at 9:05 PM local time (CDT) in Duluth on June 19, 2026 — 15h 51m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Other races near Duluth
Different organizers, within 40 miles, in the next three months
🏃 Plan Your Next Race in Duluth
Find upcoming events by distance:
- Duluth 5K Races 15 races
- 10K Run Events in Duluth 2 races
- Duluth Half Marathons 2 races
- Marathons in Duluth 2 races
- Duluth Running Calendar 2026 25 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 29 Duluth events
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