When are most 5K races held in Sunnyvale?
September is the busiest month for 5K races in Sunnyvale, with 2 of the 3. If you are flexible on the date, that is the quickest way to narrow things down.
California · 5K
5K Races in Sunnyvale, California
Every upcoming 5K around Sunnyvale, with start times, entry fees, finish-time stats from past editions, start-line maps, and the local run clubs to train with.
3 upcoming 5K races found · 2 with finish-time stats
By the numbers
The Biggest and Longest-Running
The Sunnyvale races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.
Common Questions About Running a 5K in Sunnyvale
How much do Sunnyvale 5K races cost?
Entry fees for 5K races here run from $25 to about $45, depending on the event and how early you register.
Where can I train for a 5K in Sunnyvale?
Browse Sunnyvale run clubs on RunSesh to find a training group at your pace.