Races Half marathon · Lille, France
Semi-Marathon de Lille
Semi-Marathon de Lille is a flat half marathon in Lille, France, held each September. A flat, fast northern-France half with big city support. Early September is 12-19C. On a course as flat as Semi-Marathon de Lille, even splits are everything; the classic mistake is banking time in the first third.
Page rebuilt 2026-10-01 · race facts not independently verified — confirm dates and entries on the official race site
When
September
every year
Course
flat
Half marathon
Conditions
Early September is 12-19C.
Racing this course well
A flat, fast northern-France half with big city support.
On a course as flat as Semi-Marathon de Lille, even splits are everything; the classic mistake is banking time in the first third.
Pick your goal for Lille
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 Semi-Marathon de Lille.
RunV works backwards from race day to today and rearranges the weeks when life interrupts. 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 Semi-Marathon de Lille?
- It is held each September in Lille, France. Check the official Semi-Marathon de Lille site for the exact date and entry windows.
- Is the Semi-Marathon de Lille course flat?
- A flat, fast northern-France half with big city support.
- How should I train for the Semi-Marathon de Lille?
- Train specifically for Lille — terrain, conditions, goal pace — and let the plan flex around real life. That's exactly what RunV's engine does after every run you log.
Not sure what to target? Predict your half marathon time from a recent race →
More half marathon races
Build for Lille — around your actual life
RunV engineers your block backwards from race day in September — and rebuilds it every time training doesn't go to script.
