RunRace USA › California › Run by the Sea
Run by the Sea
Santa Cruz, California · Sunday, October 4, 2026 · 4K, 12K, Half Marathon
Official race page & registration ↗Run by the Sea takes place on Sunday, October 4, 2026 in Santa Cruz, California. The race offers 3 distances: 4K, 12K, Half Marathon. For anyone travelling in, Live Oak is about 8 miles away and Sunnyvale is about 24 miles away.
It is one of 321 races on the California calendar that October. At $45, entry sits above the $30 median for a California half marathon.
- Date
- Sunday, October 4, 2026
- Location
- Santa Cruz, California
- Distances
- 4K, 12K, Half Marathon
- Entry fee
- from $45
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Santa Cruz: check in Oct 3, out Oct 5.
Common questions
When is Run by the Sea?
Run by the Sea is scheduled for Sunday, October 4, 2026.
Where is Run by the Sea held?
Run by the Sea is held in Santa Cruz, California. It is about 8 miles from Live Oak and 24 miles from Sunnyvale.
What distances does Run by the Sea offer?
The listed distances are 4K, 12K, Half Marathon.
How much does Run by the Sea cost?
Entry is listed from $45. Check the official race page for the current price, which usually rises closer to race day.
How do I register for Run by the Sea?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
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See every race on the California calendar, California Half Marathons, or use the Race Finder for maps and filters.