There are 7 upcoming half marathon races in Essex listed. Next up: Leigh-on-Sea Running Festival 2026 (Sunday, 25 October 2026), ATW Remembrance Runs (Saturday, 7 November 2026), H&T Running: Remembrance Sunday 2026 (Sunday, 8 November 2026).
Upcoming races only, soonest first. Confirm dates and entry details with the organiser.
Leigh-on-Sea · Leigh Marina, Leigh-On-Sea, Essex, SS9 2ES
Leigh-on-Sea Running Festival 2026 is organised by Mammoth Events in Leigh-on-Sea. Entry options: HALF MARATHON Standard Entry; 10K Standard Entry ⌵ReadMore⌵; 5K Standard Entry. The course surface has not been confirmed.
£25.68–£43.73
See entry options & fees
Saffron Walden · Debden Airfield, Carver Barracks, Water Ln, Wimbish, Saffron Walden CB10 2YA
ATW Remembrance Runs is organised by ATW in Saffron Walden. Entry options: Half Marathon; 10K; 5K. The course surface has not been confirmed.
£25.44–£43.46
See entry options & fees
Colchester · Batemans Tower Cafe, Promenade Way, Colchester, CO7 0HH, United Kingdom
H&T Running: Remembrance Sunday 2026 is organised by Hare & Tortoise Running Ltd in Colchester. Entry options: 10km; 6hr Timed event; Half Marathon; Marathon.
£23.50–£40
See entry options & fees
Braintree
Raynedeer Run 2026 takes place in Braintree on 13 December 2026. Organised by Hare & Tortoise Running. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£19.50–£40
See entry options & fees
Chelmsford · Anglia Ruskin University, CM1 1SQ
Chelmsford Half Marathon takes place in Chelmsford on 07 March 2027. Organised by Chelmsford Half Marathon. Published venue: Anglia Ruskin University, CM1 1SQ. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£35.25–£49.50
See entry options & fees
Colchester · The JobServe Community Stadium, United Way, Colchester, CO4 5UP
Colchester Half Marathon is organised by Colchester Half Marathon in Colchester. Entry options: CHM2027. The course surface has not been confirmed.
£40
See entry options & fees
Basildon · Basildon Sporting Village, Cranes Farm Rd, Basildon SS14 3GR
A closed-road half marathon based at Basildon Sporting Village, with a separate junior race.
£37.80
See entry options & fees
Work out your target half marathon time and pace.