ATW Watford Half Marathon
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About the race
The ATW Watford event on Sunday 7 February 2027 takes place at Cassiobury Park Avenue, Watford, Hertfordshire (WD18 7HF). It includes a Family Fun Run, a multi-terrain 10K and a Half Marathon that together follow park paths, towpaths, woodland trails and closed roads.
Distances:
- 1.8 km Family Fun Run stays within Cassiobury Park; under 8s with a full paying adult
- 10K multi-terrain route via towpath and woodland trails; no cut-off time
- Half Marathon closed roads through country lanes, Bucks Hill, Commonwood Common, Chandlers Cross
The 10K starts alongside the half marathon, diverges around the 4 km mark to the Grand Union Canal towpath for about 3 km, then continues on woodland trails and finishes past event HQ. The half marathon follows fully closed roads into surrounding country lanes and returns to Cassiobury Park; there is a cut-off of 2 hours 45 minutes at the 11-mile point. One randomly chosen half marathon competitor will receive a £2000 cash spot prize.
Event features include a lead car and cycle escort, pacers in both the 10K and half marathon, musical entertainment with a drummer, a Racecheck Gold Award (over 96% participant score), free professional photos, finish-line goodies and a unique medal. The event partners with Alzheimer's Research UK for fundraising. There is no organised parking at Cassiobury Park; public parking is available in Watford city centre and public transport options serve the area.
ATW is the organiser; the company was established in 2011 and runs national events with over 40,000 entries a year. Ticket prices listed are Fun Run £14, 10K £37 and Half Marathon £45. Transfers to future ATW events are permitted up to 48 hours before the event; refunds and person-to-person transfers are not offered. Visit the organization's website for the most recent information.
