Half Marathons In September 2025. The following is a list of fun runs, marathons, obstacle course races, triathlons and multisport/adventure races in australia in 2025. Join us for a 5k, 10k or half marathon at dorney lake on saturday 27th september 2025.

We strive to have dates 1 year out for september half marathons, but have no control of when. Halfmarathonsearch.com is a simplistic half marathon calendar currently featuring a half.