
HERS Breast Cancer Foundation 5K and 10K is a running race on September 26, 2026 in Fremont, CA.
Live forecast from the U.S. National Weather Service.
Race day
Saturday, 9/26
High
73°
Low
56°
Conditions
Mostly sunny
Chance of Rain
0%
Wind
2 to 12 mph
Population
228,518
as of 2023
City Elevation
57 ft
Nearest Airport
SJC
Norman Y. Mineta San Jose International Airport · 15 mi
Time Zone
Pacific Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Every finish line starts with a single decision. Claim your spot at HERS Breast Cancer Foundation 5K and 10K, put it on the calendar, and turn “someday” into a start date.
2
Days to train
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With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
HERS Breast Cancer Foundation 5K and 10K
Sep 26, 2026