Every Half Marathon in California in September 2026, all 11 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
Common Questions About Running a September Half Marathon in California
When in September are most Half Marathon races held?
The busiest weekend in California is September 26 and September 27, with 11 Half Marathon races on those two days, and the single busiest day is Saturday, September 26 with 8. Every one of them is on a Saturday or a Sunday.
When should I sign up for a September Half Marathon?
As early as you can. 1 of these September Half Marathon races already have a price increase on the calendar, and 6 are open for entry right now. Another 5 have published an opening date and have not opened yet.
How much does a September Half Marathon cost to enter?
The typical entry is $30, with paid entries running from $28.5 up to $69. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
Half Marathon Races in Other Months
August and October sit either side of September, which is where most people look next when a date does not fit.
