Grandma's Marathon Race Weekend
Grandma's Marathon Race Weekend logo

Grandma's Marathon Race Weekend

Duluth, Minnesota, United States View on map
Jun 18, 2027 – Jun 19, 2027 (America/Chicago local time)
Running

About this race

Earn your entry to the 2026 entry to Grandma's Marathon or the Garry Bjorklund Half 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 training shirt, a race day 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!

Pick your distance

Running

William A. Irvin 5K ($50 Team Fee plus $500 fundraising)

Earn your entry to the 2027 entry to 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, 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, 2027.

Jun 18, 2027 5K 1:00 PM
$75.00
Open

Great Grandma's Challenge - 5K and Marathon - ($50 team fee plus $1250 fundraising)

Earn your entry to the 2027 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, 2027.

Jun 18, 2027 5K 1:00 PM
$75.00
Open

Grandma's Marathon ($50 team fee plus $750 fundraising)

Earn your entry to the 2027 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, 2027.

Jun 18, 2027 Marathon 6:45 AM
$75.00
Open

Fundraiser Only (already have an entry into the 2027 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.

Jun 18, 2027 Marathon 6:45 AM
$75.00
Open

Garry Bjorklund Half Marathon ($50 Team Fee plus $750 fundraising)

Earn your entry to the 2027 entry to the Garry Bjorklund Half 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, 2027.

Jun 18, 2027 Garry Bjorklund Half Marathon ($50 Team Fee plus $750 fundraising) 6:45 AM
$75.00
Open

Typical race-day weather

Based on 6 years of Open-Meteo archive data for this event's race dates in Duluth, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 13.5° / Maximum temperature (race-week average) 23.0°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 13.3° / Maximum feels like — heat index / wind chill (race-week average) 23.9°
Peak wind (km/h)
Strongest wind of the day (race-week average)
18.3
Precip (mm)
Precipitation over the day (race-week average)
3.7mm
Humidity
Mean relative humidity (race-week average)
74.2%
Sunrise
Sunrise at the start line on June 18, 2027 (CDT)
Sunset
Sunset at the start line on June 18, 2027 (CDT)
Daylight
Hours between sunrise and sunset on race day
15h 51m

The sun rises at 5:13 AM and sets at 9:05 PM local time (CDT) in Duluth on June 18, 2027 — 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.

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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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