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
$60.00
Open

Run by the Sea 12k

Oct 04, 2026 12K 8:15 AM
$70.00
Open

Typical race-day weather

Based on 6 years of Open-Meteo archive data for this event's race dates in Santa Cruz, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 12.9° / Maximum temperature (race-week average) 23.0°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 12.6° / Maximum feels like — heat index / wind chill (race-week average) 23.4°
Peak wind (km/h)
Strongest wind of the day (race-week average)
11.6
Precip (mm)
Precipitation over the day (race-week average)
1.0mm
Humidity
Mean relative humidity (race-week average)
74.5%
Sunrise
Sunrise at the start line on October 4, 2026 (PDT)
Sunset
Sunset at the start line on October 4, 2026 (PDT)
Daylight
Hours between sunrise and sunset on race day
11h 40m

The sun rises at 7:06 AM and sets at 6:47 PM local time (PDT) in Santa Cruz on October 4, 2026 — 11h 40m of daylight.

Course

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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Results — Run by the Sea

2025 edition View Results
2024 edition View Results
2023 edition View Results
2022 edition View Results

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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