Harlow
Trail Running Calendar near Harlow 2026-2027
Explore the top trail runs near Harlow for 2026-2027! We've gathered 109 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
December 2026
Trail 5K and 10K around the Tewinbury estate in Hertfordshire, fully waymarked with marshals, aid station at 5.3 km and chip timing.
A social 12k at Chelmsford Brewery with a GPX and Strava route, checkpoint drinks and Christmas medals, plus encouraged fancy dress.
Final round of the four-event Trifarm Winter series: a mainly off-road 10 km on public footpaths and bridleways at Trifarm in Boreham on 27 December 2026.
A looped trail event in Crystal Palace Park where runners complete 2.65 km laps within a 7 hour time limit. Distances range from 5 km to ultra and all participants receive a finishers' medal.
January 2027
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
February 2027
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
A lapped event on the Flitch Way near Rayne offering 5 km, 10 km, half and full marathon and a six hour challenge. Loops are 5.3 km with an aid station at the end of every lap and a bespoke medal choice.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
A timed lap event in Crystal Palace Park on 21 February 2027 where runners complete 2.65 km laps to reach distances from 5 km to ultra, with a seven hour limit and a finishers' memento for all participants.
A 42-mile trail race from Chipping Ongar to the ancient Chapel of St Peter-on-the-Wall, following an old pilgrimage route through rural Essex. Mostly off-road and often muddy, the route is waymarked with GPX support, four outdoor checkpoints and mand..
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
A single lap undulating 10k trail race at Hadleigh Country Park with steep hills, deep mud, technical terrain and mandatory trail shoes.
March 2027
Trail event at Hyde Hall Farm offering 10k, half, full and ultra distances with lap-based courses, water at the lap point, secure parking and a bespoke finisher medal. The event is cupless so bring a refillable cup or bottle.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.