Race Discovery
Run by the Sea
Run by the Sea logo

Run by the Sea

Santa Cruz, California, United States View on map
Oct 04, 2026 (America/Los_Angeles local time)
Running

About this race

Run by the Sea returns to lovely Wilder Ranch State Park on Sunday, October 4th! This unique Half Marathon, 12K run, and 4K run/walk meanders along the gorgeous coastal bluffs of California's Central Coast in Santa Cruz and consists mostly of flat, packed dirt trails. Participants will enjoy scenic coastal views while passing along the bluffs and Wilder Ranch park trails. Get ready to take in the natural beauty of the Monterey Bay, the serene flats of Wilder Ranch's meadows, and maybe even catch a glimpse of some dolphins - no other race is quite like it!

Now in its 10th year, Run by the Sea is organized by the Santa Cruz Track Club and benefits the track club's youth program, Bike Santa Cruz County, and Santa Cruz Mountain Trail Stewards. 

Race Headquarters and Parking 

4K Route

12K Route   Half Marathon Route     

Pick your distance

Running

Run by the Sea 4k

Oct 04, 2026 4K 8:30 AM
$55.00
Open

Run by the Sea 12k

Oct 04, 2026 12K 8:15 AM
$65.00
Open

Typical race-day weather

Based on 4 years of historical conditions on this event's race dates in Santa Cruz.

Temp (°C)
Minimum temperature (race-day average) 12.0° / Maximum temperature (race-day average) 20.7°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-day average) 12.0° / Maximum feels like — heat index / wind chill (race-day average) 20.7°
Wind (km/h)
Average wind speed (race-day average)
12.9
Precip (mm)
Average precipitation (race-day average)
4.8mm
Humidity
Average relative humidity (race-day average)
79.9%

Course

Route map and elevation profile

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Other races near Santa Cruz

Different organizers, within 40 miles, in the next three months

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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 14 Santa Cruz events

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