Run by The Sea

Santa Cruz, United States • 4 Oct 2026

Run by the Sea

Run by the Sea is a set of road and trail races held at Wilder Ranch State Park in Santa Cruz on October 4, 2026. The event includes a Half Marathon, a 12K race, and a 4K run/walk. Now in its tenth year, the event is organized by the Santa Cruz Track Club and benefits the club’s youth program, Bike Santa Cruz County, and Santa Cruz Mountain Trail Stewards.

The courses mostly follow packed dirt trails and coastal bluff paths along the Monterey Bay. Much of the terrain is flat and passes through the park meadows and bluff-top viewpoints, offering open coastal views. Participants may also see marine life from the route.

Distances included

  • Half Marathon
  • 12K
  • 4K run/walk

Race details note the use of Wilder Ranch park trails and bluff-top sections. The description above uses only information provided by the organizer and does not include start times or registration specifics. Visit the organization's website for the most recent information.

Race information

Half Marathon
Run by the Sea Half Marathon
12 km
Run by the Sea 12k
Run by the Sea 4k
Visit the organization's website for the most recent information.
Trail runs nearby

A full-day trail event at Almaden Quicksilver County Park on May 2, 2026, offering distances from a kids run to a 50K with marked dirt roads, single-track sections, aid stations, drop bag service at the Hacienda start, and free parking.

Experience the diverse landscapes of Monterey County with courses ranging from a family friendly 1 mile run to a 35K trail race through the Palo Corona Backcountry. Enjoy exclusive access to protected lands and coastal vistas.

Trail ultramarathons in Almaden Quicksilver County Park on May 9 2026, offering a 100K and a 50K with substantial elevation gain, course maps and GPX files, USATF sanctioning, aid stations, volunteer support, swag and a post race party.

Celebrate the 24th year of this community event in Los Altos Hills. Run or walk through the Westwind Community Barn and Byrne Preserve on hilly 5K, 10K, or 1 mile courses.

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