Sundae Runday

AUG
16
2026
Sundae Runday blends running and ice cream at Seward Park in Seattle with a 10K, 5K, 2 mile walk and Kids Dash, plus post-race sundaes and family activities, with proceeds benefiting Let Me Run.
Sun 16 Aug 2026
10 kilometers 5 kilometers

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Sundae Runday

Sundae Runday takes place Sunday, August 16, 2026, at Seward Park in Seattle. The event offers multiple route options and family-friendly festival activities set along the park and the shores of Lake Washington.

  • 10K
  • 5K
  • 2 mile walk
  • Kids Dash

The course goes through Seward Park and along the lakeshore, with views of Mount Rainier and sections on closed roads and trails. The event is stroller friendly and allows dogs to participate when pre-registered.

Post-race features center on ice cream. Finishers receive a sundae with toppings, and there are post-race ice cream treats for participants and pre-registered dogs. Additional on-site amenities include a finisher item, free event photos, a Kid’s Tent with games and crafts, a Kids Dash with finisher items and ice cream, and a costume contest. The route also includes a novelty station described as a banana split halfway mark that provides water and whipped cream.

The event benefits Let Me Run, a youth character development program that uses running as part of its curriculum. Visit the organization's website for the most recent information.

10 km
10k Run
5 km
5k Run
2 Mile Walk