Run by the Sea returns on Sunday, October 27th 2019

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Registration is now open for the 7th annual Run by the Sea. Click below to register, and be sure to sign up by October 4th to receive early bird pricing!

A stunning coastal route in Wilder Ranch State Park.

A benefit for Bike Santa Cruz County: promoting active transportation by making Santa Cruz County a better place for bikes, through advocacy, education, and community engagement.

Run by the Sea is a gorgeous half marathon, 12K run, or 4K run/walk that meanders along the undeveloped coastline north of Santa Cruz. Most of the run is on a flat, packed dirt trail, and overlooks wild rocky shoreline. No other running event uses the trail, and with a legendary beach crossing, Run by the Sea is unique in every mile.

Lean more about the course  →


There are many ways to get involved in Run by the Sea (besides running or walking!), including volunteering and sponsoring.

See volunteer opportunities →

See sponsorship opportunities

Run by the Sea 2018 results are in!

Runners and walkers from Santa Cruz, the Bay Area, and beyond joined us in Wilder Ranch on Sunday, August 26th, 2018 for the 6th annual Run by the Sea. Thanks so much to the participants, our amazing volunteers, and incredible community sponsors and partners. Together, we raised $20,000 for Bike Santa Cruz County's work on bicycle advocacy, education, and community-building!

Thank you to our past sponsors!