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MARATHON TRAINING

Train for the Grandma's Marathon

Jun 20, 2026  ·  Duluth, MN  ·  Marathon/Half

Cadoo verifies the training, not the race. This event stays on the calendar. Live games are open on cadoo.games.

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Event details

The Grandma's Marathon

Everything you need to plan your build-up. Details below are for the event itself; the training happens on Cadoo.

DateJun 20, 2026
LocationDuluth, MN (Midwest)
DistanceMarathon/Half
TerrainRoad
EntryYes
Field size~9000 participants
Official event siteVisit ↗
Follow the eventSocial ↗
2026 edition done

Your Streak Runner plan for the Grandma's Marathon

Cadoo verifies the work before race day: camera reps and device steps. It does not time the course. Open the Marathon Arcade: Cadoo to pick this event and start a train-for game.

Streak Runner

For an event like this, Cadoo runs a Streak Runner game: it rewards showing up every single day, turning consistency into your biggest advantage. Cadoo verifies camera reps and device steps. It does not time the course, and this race does not pay a cash prize.

16-week planDifficulty 7/10Verified workouts
Open the marathon arcade Create your own
Keep going

Train, host, and learn

The Grandma's Marathon training guide →

The full write-up: how the Streak Runner game maps to race day.

Marathon Arcade: Cadoo →

Every event in this category, plus train-for step and strength games.

Browse all events →

Every marathon, ultra, triathlon, bikeathon, walkathon and duathlon on Cadoo.

Organizers & brands →

Host a branded game for the Grandma's Marathon and turn training into marketing.

What organizers get

For Grandma's Marathon, the weeks before the start are the product.

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