Race Discovery
Alameda Island Running Festival
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2025 - Alameda Island Running Festival

Alameda, California, United States View on map
Sep 21, 2025 (America/Los_Angeles local time)
Running

2025 distances

Running

Island Half Marathon

Because of construction this years Half will be two 10k loops around Alameda point with beautiful views of the SF skyline, the USS Hornet and Oakland/Alameda estuary. Don't let the two loops deter you, the course is fast and fast with some unique access to the old Taxiway and scenic landmarks. We will be back to a full loop next year once Central is reopened. All runner will receive a t-shirt, medal and post event food and refreshments

Sep 21, 2025 Half-Marathon 7:45 AM
$115.00
Closed

Island 10K Run

The 10K course will be a single loop that will include the same beautiful views, new trails and aid stations on Alameda point. All runner will receive a t-shirt, medal and post event food and refreshments

Sep 21, 2025 10K 8:00 AM
$75.00
Closed

Island 5k Run / Walk presented by Penumbra

The 5k is a 3.1 mile run circling some of the best parts of the Alameda Point and recently opened trails. All runner will receive a t-shirt, medal and post event food and refreshments

Sep 21, 2025 5K 8:15 AM
$55.00
Closed

Race-day weather

Conditions on September 21, 2025 — historical Open-Meteo data.

Temp (°C)
Minimum temperature (recorded on race day) 15.6° / Maximum temperature (recorded on race day) 24.5°
Feels Like (°C)
Minimum feels like — heat index / wind chill (recorded on race day) 15.6° / Maximum feels like — heat index / wind chill (recorded on race day) 24.5°
Peak wind (km/h)
Strongest wind of the day (recorded on race day)
10.4
Precip (mm)
Precipitation over the day (recorded on race day)
0.0mm
Humidity
Mean relative humidity (recorded on race day)
81.0%
Sunrise
Sunrise at the start line on September 21, 2025 (PDT)
Sunset
Sunset at the start line on September 21, 2025 (PDT)
Daylight
Hours between sunrise and sunset on race day
12h 10m

The sun rises at 6:56 AM and sets at 7:07 PM local time (PDT) in Alameda on September 21, 2025 — 12h 10m 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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Other races near Alameda

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, 7 Alameda events

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