Races Half marathon · Windsor, UK
Dorney Lake Half Marathon
Dorney Lake Half Marathon is a flat half marathon in Windsor, UK, held each October. Multi-lap course on the traffic-free tarmac roads around Dorney Lake, the rowing venue of the 2012 Olympics. Long straight sections and almost no elevation change. Mid-October in the Thames Valley is usually cool and often damp, typically 6 to 16°C. Flat courses like Windsor's reward metronomic pacing — the danger is going out faster than goal pace because it feels cheap early.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
October
every year
Course
flat
Half marathon
Conditions
Mid-October in the Thames Valley is usually cool and often damp, typically 6 to 16°C.
Racing this course well
Multi-lap course on the traffic-free tarmac roads around Dorney Lake, the rowing venue of the 2012 Olympics. Long straight sections and almost no elevation change.
Flat courses like Windsor's reward metronomic pacing — the danger is going out faster than goal pace because it feels cheap early.
Getting a place
- How you get in
- Open entry: first come, first served
- Price
- £34, or £32 for affiliated runners (2026 race)
Official Dorney Lake Half Marathon site →Checked November 2026
Race day
- Start time
- 10:00
The course in numbers
The course is multi-lap with long straight sections in a traffic-free setting, so there are no climbs to speak of.
- Layout
- Laps
- Surface
- Tarmac road, traffic free
Worth knowing
- Every finisher receives a medal.
- Parking at the venue is free, with access only through the main entrance off Court Lane.
Pick your goal for Windsor
Pace charts, weekly structure and timelines for the most common half marathon goals:
We don’t hold a confirmed date for this edition, so any countdown comes from the date you enter here.
Build your training around Dorney Lake 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 Dorney Lake Half Marathon?
- It is held each October in Windsor, UK. Check the official Dorney Lake Half Marathon site for the exact date and entry windows.
- Is the Dorney Lake Half Marathon course flat?
- Multi-lap course on the traffic-free tarmac roads around Dorney Lake, the rowing venue of the 2012 Olympics. Long straight sections and almost no elevation change.
- How do I enter the Dorney Lake Half Marathon?
- Open entry: first come, first served. Price: £34, or £32 for affiliated runners (2026 race).
- How should I train for the Dorney Lake Half Marathon?
- Match your preparation to Dorney Lake Half Marathon's profile and the October 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 Windsor — around your actual life
RunV engineers your block backwards from race day in October — and adapts it when training doesn't go to script. You approve every change.
