Races Half marathon · Brentwood, UK
Brentwood Half Marathon
Brentwood Half Marathon is a rolling half marathon in Brentwood, UK, held each March. An undulating road half through the Essex countryside. For 2027 the start and finish move to the Brentwood Centre on a new, entirely rural route that keeps much of the 2026 course. Mid to late March in Essex is cool, around 3 to 12°C. The rises around Brentwood are small but relentless — train on similar terrain and race by effort, not pace.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
March
next: Sunday 21 March 2027
Course
rolling
Half marathon
Conditions
Mid to late March in Essex is cool, around 3 to 12°C.
Racing this course well
An undulating road half through the Essex countryside. For 2027 the start and finish move to the Brentwood Centre on a new, entirely rural route that keeps much of the 2026 course.
The rises around Brentwood are small but relentless — train on similar terrain and race by effort, not pace.
Getting a place
- Does it sell out?
- YesThe organiser's site says the race sold out in 2025 and 2026.
Official Brentwood Half Marathon site →Checked November 2026
Race day
- Next race
- Sunday 21 March 2027
- Start time
- 10:00
The course in numbers
- Layout
- Loop
- Surface
- Rural roads
Pick your goal for Brentwood
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 Brentwood 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 Brentwood Half Marathon?
- The next Brentwood Half Marathon is on Sunday 21 March 2027 in Brentwood, UK. It is held each March.
- Is the Brentwood Half Marathon course flat?
- An undulating road half through the Essex countryside. For 2027 the start and finish move to the Brentwood Centre on a new, entirely rural route that keeps much of the 2026 course.
- Does the Brentwood Half Marathon sell out?
- Yes. The organiser's site says the race sold out in 2025 and 2026.
- How should I train for the Brentwood Half Marathon?
- Build for the course you'll actually race at the Brentwood Half Marathon: rolling terrain, March conditions. RunV Premium builds a training plan around your goal time and race date, and lets you adapt it when life interrupts the Brentwood build.
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 Brentwood — around your actual life
RunV engineers your block backwards from race day in March — and adapts it when training doesn't go to script. You approve every change.
