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Castro Valley half marathons

Half Marathons in Castro Valley, California

6 upcoming half marathons in Castro Valley, listed by date with entry fees from race registration.

6
upcoming half marathons
2:29:48
typical finish

Other distances in Castro Valley

November 2026

January 2027

February 2027

April 2027

June 2027

Half marathon results in Castro Valley

From 9 half marathons with official results in the last two years, 1,092 finishers in all.

Typical half marathon times by age and gender

2:29:48
typical finish
11:26 /mi
typical pace
142
finishers in a typical race
2:39:03
women, typical finish
2:28:46
men, typical finish
under 1:56:11
the fastest tenth

Entry for upcoming half marathons in Castro Valley usually runs from $70 to $95, with a typical fee of $70 before processing fees.

Typical times are the middle finisher across these races, weighted by field size. School meets, stair climbs, and results with timing errors are left out.

Fastest half marathons in Castro Valley

  1. 12027 Lake Chabot Trail Challenge (Half Marathon & 5K)Castro Valley · median 2:24:53 · 155 finishers in 2026
  2. 2Redtail Ridge Trail RunCastro Valley · median 2:28:55 · 61 finishers in 2026
  3. 3Almost New Year's EveCastro Valley · median 2:29:48 · 175 finishers in 2025
  4. 4Lake Chabot Trail RunCastro Valley · median 2:37:28 · 155 finishers in 2025
  5. 5SPASM Lake Chabot Trail RunCastro Valley · median 2:37:46 · 62 finishers in 2026

Biggest half marathons in Castro Valley

  1. 1Almost New Year's EveCastro Valley · 175 finishers in 2025
  2. 22027 Lake Chabot Trail Challenge (Half Marathon & 5K)Castro Valley · 155 finishers in 2026
  3. 3Lake Chabot Trail RunCastro Valley · 155 finishers in 2025
  4. 4Brazen New Year's DayCastro Valley · 136 finishers in 2026
  5. 5The Rock the Loch 5K/10K/Half Marathon (LIVE or Virtual)Castro Valley · 103 finishers in 2026
When half marathons happen in Castro Valley