Silicon Valley Half Marathon

Silicon Valley Half Marathon takes place in San Jose, California, on March 14, 2027. The half marathon (13.1 miles) starts at 8:00 a.m. and the 5K follows at 8:30 a.m., a compact two-race program that keeps the morning short and puts both fields on the same finish line within a couple of hours.

Bay Area road racing in mid-March lands in the middle of spring marathon season, which makes this half a natural tune-up: run it at goal marathon pace plus a little, or race it flat out as a fitness check eight to ten weeks before a spring 26.2. If the half is your target race instead, count on a 12-week block with a weekly long run and one session at threshold. The 5K works for anyone easing back into racing.