Races Half marathon · Watford, UK
Watford Half Marathon
Watford Half Marathon is a rolling half marathon in Watford, UK, held each February. Starts in Cassiobury Park and heads out on closed roads and country lanes through Bucks Hill, Commonwood Common and Chandlers Cross before returning. Runner reviews say it is not flat, with climbs and descents. Early February in Hertfordshire is cold, around 1 to 8°C, with a chance of rain. Watford's rolling course rewards effort-based pacing — hold steady effort on the rises and let the pace return on the descents.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
February
next: Sunday 7 February 2027
Course
rolling
Half marathon
Conditions
Early February in Hertfordshire is cold, around 1 to 8°C, with a chance of rain.
Racing this course well
Starts in Cassiobury Park and heads out on closed roads and country lanes through Bucks Hill, Commonwood Common and Chandlers Cross before returning. Runner reviews say it is not flat, with climbs and descents.
Watford's rolling course rewards effort-based pacing — hold steady effort on the rises and let the pace return on the descents.
Getting a place
Official Watford Half Marathon site →Checked November 2026
Race day
- Next race
- Sunday 7 February 2027
- Also on the day
- 10k
The course in numbers
The route leaves the park for hilly lanes around Bucks Hill and Chandlers Cross before the run back into Cassiobury Park.
- Layout
- Loop
- Surface
- Closed roads and country lanes
Getting there
- Rail station
- Watford Junction
Pick your goal for Watford
Pace charts, weekly structure and timelines for the most common half marathon goals:
The date shown is the one the organiser has announced. Change it if yours differs.
Build your training around Watford Half Marathon.
RunV works backwards from race day to today. Your plan adapts when life interrupts, and you approve every change. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.
Everything above stays free and complete — this is an optional next step, not a paywall.
Asked often
- When is the Watford Half Marathon?
- The next Watford Half Marathon is on Sunday 7 February 2027 in Watford, UK. It is held each February.
- Is the Watford Half Marathon course flat?
- Starts in Cassiobury Park and heads out on closed roads and country lanes through Bucks Hill, Commonwood Common and Chandlers Cross before returning. Runner reviews say it is not flat, with climbs and descents.
- How should I train for the Watford Half Marathon?
- Match your preparation to Watford Half Marathon's profile and the February weather, then protect consistency — with RunV Premium you can adapt your plan to fit your week, so one bad week never derails the block.
Not sure what to target? Predict your half marathon time from a recent race →
More half marathon races
Supplements research for this distance
Build for Watford — around your actual life
RunV engineers your block backwards from race day in February — and adapts it when training doesn't go to script. You approve every change.
