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Clo Cow Half Marathon

Name: Clo Cow Half Marathon
Start: 2026-10-11
End: 2026-10-11
Location: Petaluma

Petaluma, California, United States

calendar_today 11 Oct, 2026

directions_run Running

language Official Website

About the Event

The Clo Cow Half Marathon, set for October 11, 2026, invites runners to explore the scenic routes of Petaluma. Participants can choose from three distances: a challenging half marathon (21K), a shorter but equally engaging 10K run, or a family-friendly 5K option. Whether you're an avid runner or just starting out, there's a distance that suits every level and pace.

Races Offered

Clo Cow Half Marathon - 10K

Oct 11, 2026

straighten

Distance — 10K

terrain

Type — Running

timer

2 days remaining

Clo Cow Half Marathon - 21K

Oct 11, 2026

straighten

Distance — 21K

terrain

Type — Running

timer

2 days remaining

Clo Cow Half Marathon - 5K

Oct 11, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

2 days remaining

Weather History

These values represent the 3-year monthly averages for October in Petaluma.

thermostat Temperature

11.5° / 24.3°

wb_sunny Feels like

10.0° / 22.6°

light_mode Avg sunshine hours

9h 8m

water_drop Avg rainfall

0.7 mm

ac_unit Avg snowfall

—

air Avg wind speed

8.4 km/h (Light breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (4.0)

humidity_mid Humidity

71.0%

wb_twilight Sunrise

07:20

nightlight Sunset

18:31

Runner Reviews

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Clo Cow Half Marathon

About the Event