Earth Day Run

Sat, Apr 18, 2026, 10:00 AM PDT

Location: Seattle, WA; 65th and Sand Point, 98177
Type: RUN

Official registration

At a glance

Double-check key details

Join the Earth Day Run for a half marathon in Seattle, WA. Find full details on the Magnuson Series website.

The Earth Day Run offers a half marathon distance in Seattle, WA, on April 18, 2026. This event takes place in a hilly, low-altitude area with typically mild weather. For comprehensive details about the course, registration, and race day experience, please visit the official Magnuson Series website.

What to expect

A half marathon distance in Seattle, WA.
The course is expected to feature some hilly sections.
Weather conditions are typically mild for the season.

Auto-drafted from the public listing — confirm details on the official event page before signing up.

Distances & registration

4 options

Registration for all distances is through the official signup link above.

5K
Sat, Apr 18, 10:00 AM PDT · From $34.92
Opens Jan 2, 2026, 10:11 AM PST · Closes Apr 18, 2026, 7:00 AM PDT
10K
Sat, Apr 18, 10:00 AM PDT · From $41.28
Opens Jan 2, 2026, 10:11 AM PST · Closes Apr 18, 2026, 7:00 AM PDT
15K
Sat, Apr 18, 10:00 AM PDT · From $46.58
Opens Jan 2, 2026, 10:11 AM PST · Closes Apr 18, 2026, 7:00 AM PDT

+ 1 more option

13.1 Miles
Sat, Apr 18, 10:00 AM PDT · From $60.36
Opens Jan 2, 2026, 10:16 AM PST · Closes Apr 18, 2026, 7:00 AM PDT

Vibe Check

Steady Effort

longer distance

Based on terrain, weather, and distance data.

The course

Hilly
Timed race

From the organizer

Please visit https://magnusonseries.org/ for all the details.

Also in this area

Easier options nearby

Lower-difficulty races in the same state.

More demanding options nearby

Higher-difficulty races in the same state.