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Grandma’s Marathon

Duluth, Minnesota, USA
June 21st, 2025
07:40
Marathon (26.2 miles / 42.2 km)
Race Overview

Started by a local group of runners in 1977, Grandma’s Marathon has grown from 150 participants to one of the largest marathons in the United States, welcoming over 20,000 participants each June. The racecourse runs alongside Lake Superior before entering Duluth, where spectators cheer runners to the finish line. The event marks the unofficial kickoff to summer in Duluth.

Course Information

Elevation Details

  • Total Elevation Gain:
    471
  • Net Elevation Gain:
    -130

Notable Landmarks

  • Lemon Drop Hill: Located near the 22-mile mark, this incline is one of the course's most challenging segments. Spectators often gather here to motivate runners as they approach the final stretch.
  • Troll Mile: Approximately at mile 19, runners encounter the "Troll Mile," a section adorned with over 200 troll figurines, adding a whimsical touch to the race.
  • Historic Fitger's Brewing Company: Around mile 24, participants pass this historic brewery, a Duluth landmark that has been transformed into an inn and retail complex.
  • SS William A. Irvin: Near mile 25.5, runners pass by this retired iron ore freighter, now a museum ship docked in Duluth's harbor, symbolizing the city's rich maritime heritage.
  • Aerial Lift Bridge: As runners approach the finish line in Canal Park, they are greeted by views of this iconic bridge, one of Duluth's most recognizable structures.
Weather & Atmosphere
Average Temperature
18
Temperature Range
12
to
24
Season
summer
Participants
20,000
Support Rating
7/10
Temperature Feel
warm
Race Information

Location Details

Location: Duluth, Minnesota, USA
Country: United States

Other Race Distances

Half Marathon (13.1 miles / 21.1 km)
5K (3.1 miles / 5 km)

Boston Marathon Status

This is a Boston Marathon Qualifier race
Accommodation

Estimated Hotel Cost

400 USD per night

Registration Requirements

Race Requirements

Minimum Age:12 years
Time Limit:07:00

Eligibility

Official Registration

Age Limitations

Time Limit

Prohibited Items - consult https://grandmasmarathon.com/rules-of-competition/

Required Documents

Photo ID

For third party bib pickup: printedauthorized confirmation along with their own photo ID at the packet pickup location.

Entry Methods

Online registration

Charity organization's website

Cancellation & Refund Policy

Entry fees are non-refundable. The only exception to this is for those who are on active military duty and deployed for service during race weekend (a copy of deployment orders is required).

Entry deferments are not permitted under any circumstances.

Yes, you may transfer your entry to another person. This action comes with a $26.95 transaction fee, which is to be paid by the person receiving the transferred entry.

Additional Information

The Garry Bjorklund Half Marathon is also held on the same course on June 21, 2025

Yes, even if general entries for Grandma's Marathon are sold out, you can still secure a spot by participating as a charity runner. Grandma's Marathon collaborates with various official charity partners, each allocated a limited number of race entries specifically for fundraising purposes. To obtain one of these entries, you'll need to commit to raising a minimum amount of funds for the chosen charity.

For instance, the Cystic Fibrosis Foundation offers guaranteed race entries to participants who pledge to raise at least $1,200 for the full or half marathon, and $650 for the 5K. Similarly, Save the Boundary Waters provides entries with a fundraising commitment of $500 for either the full marathon or half marathon, and $250 for the 5K. It's important to note that each charity sets its own fundraising requirements and may have specific deadlines. Additionally, charity entries are limited and can sell out, so it's advisable to reach out promptly to the organization you're interested in supporting.

Race Categories & Pricing
  • General Entry130 USD
  • Charity Fundraiser500 USD
Important Dates
  • Registration Open
    2024-10-01
  • Price Increases
    2024-10-16
  • Bib Transfer Deadline
    2025-05-01
  • Charity Runner Registration Deadline
    2025-05-04
  • Race Packet Delivery Request Deadline
    2025-05-20
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