Chelmsford Half Marathon October 2025. The chelmsford marathon & half marathon on 13 october 2025 is one of the biggest running events in essex and is a major fundraising event for havens hospices. Find all race information on.

The chelmsford marathon & half marathon on 13 october 2025 is one of the biggest running events in essex and is a major fundraising event for havens hospices. Don’t miss out on one of the biggest running events in essex;