2026 ATW Watford Half Marathon and 10K

The 2026 ATW Watford Half Marathon and 10K takes place on Sunday, 1 February 2026, starting from Cassiobury Park in Watford, United Kingdom. Organised by Active Training World (ATW), this road running event utilizes closed roads and park paths for a scenic experience. Weather conditions in Watford during early February typically feature cold temperatures, with averages ranging from 2°C to 8°C, and a moderate chance of rain or frost; participants should prepare for variable conditions. The event features a long-standing tradition spanning over 40 years, offering a friendly atmosphere and countryside routes, including the Hertfordshire Senior Half Marathon Championships and an optional fundraising element for Alzheimer’s Research UK.

What event formats and distances are available?

• →Family Fun Run (1.8 km): A park loop around Cassiobury Park, open to all ages.
• →10K: A mixed road and trail route combining traffic-free park roads, canal towpath, and woodland paths.
• →Half Marathon: A fully closed road route through the Hertfordshire countryside, passing The Grove Hotel and Commonwood Common.

What are the start times and age limits for each race?

• →Family Fun Run: Starts at 09:30 AM; open to all ages (children under 8 must run with a paying adult).
• →10K: Starts at 10:00 AM; age limit is 15+.
• →Half Marathon: Starts at 10:00 AM; age limit is 17+.

What are the registration fees for each distance?

• →Family Fun Run: £12.00
• →10K: £28.00–£30.00 (January special pricing)
• →Half Marathon: £36.00–£38.00 (January special pricing)

Are there any time limits or cutoffs for the races?

• →Family Fun Run: No specified cutoff time.
• →10K: No cut-off time.
• →Half Marathon: There is a cutoff of 2 hours 45 minutes to the 11-mile mark.

What is included with registration for all runners?

• →Unique medal and finish line goodies
• →Free professional race photos
• →Music and drumming along the route
• →Professional finish line commentator
• →Racecheck Gold Award (2023) event standards
• →Lead car escort for the Half Marathon
• →Access to the vibrant event village with stalls and charity zone

What specific features are available for the Half Marathon?

• →Eligible runners can compete in the Hertfordshire Senior Half Marathon Championships.
• →Pacers will be available for various finishing times.
• →One random participant will win a £2,000 spot prize.
• →The route is fully closed roads starting in Cassiobury Park and returning to the park.

What specific features are available for the 10K?

• →PB pacers are available to help runners achieve personal bests.
• →The route splits from the Half Marathon to join the Grand Union Canal towpath before re-entering woodland.

What charity is supported by this event?

• →The partner charity for 2026 is Alzheimer’s Research UK.
• →Participants can donate or fundraise during registration to support research toward finding a cure for dementia-related diseases.

What is the event policy regarding transfers and refunds?

• →No refunds are available.
• →No person-to-person transfers are permitted.
• →Entries may be transferred to another future ATW event up to 48 hours before race day for any reason (no proof required).

How can participants connect with the community?

• →ATW promotes a connected running community with over 40,000 annual participants.
• →Participants can interact through the ATW Chat Facebook group or other social channels for advice, stories, and training support.