Clacton Half Marathon
Clacton-on-Sea, Essex
16 Aug 2026
⚠ Start times change frequently. Always check with race organiser or their website for this year's confirmed start time before travelling.
Course map
Map based on 2025 route
⚠ This map is for indicative purposes only — routes can change, or be reversed, year to year. Check with the race organiser for this year's confirmed map.
Elevation profile
About this race
The Clacton Half Marathon starts and finishes on the Greensward, a large green area overlooking the seafront opposite Fourth Avenue in Clacton-on-Sea. The course follows two laps of both the upper and lower promenades along Clacton seafront, giving runners repeated views of the coastline. The route is accurately measured and classed as flat, with one gentle incline and one decline per lap where the course drops down to, and climbs back up from, the lower promenade. The surface is tarmac and concrete throughout, suitable for standard road shoes. Because of the lapped nature of the course, runners pass the water stations and finish area more than once before completing the full distance. Held as part of the Clacton Carnival, the race draws holidaymakers and day trippers who cheer runners along the prom, and suits both first-time half marathoners and seasoned athletes chasing a personal best.
Course profile & record eligibility
World Athletics record-eligibility rules cap net elevation loss at 1m per km of race distance, and require the start and finish to be no more than 50% of the race distance apart — both meant to stop a course gaining an unfair edge from downhill grade or a point-to-point tailwind. This is based on this course's recorded elevation and GPS data, not an official measurement or certification.