Semi-Marathon International de Lille takes place on Sun, Oct 25, 2026 in Lille, France. The main route is 21.1 km.
- Date
- Sun, Oct 25, 2026
- Start
- Lille 🇫🇷
- Distance
- 21.1 km
- Level
- Open to all
Your 3-week plan to Semi-Marathon International de Lille
The Taper phase starts this week. Built around your fitness and adjusted every day as your form changes; attach the course and it prepares for the climbs too.
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The Semi-Marathon International de Lille is a fast and popular flat road race held in the historic streets of Lille, France.
What this race demands
The Semi-Marathon International de Lille demands sustained running fitness to cover the 21.1 km distance efficiently on a fast, flat road course.
Aerobic endurance
Covering the half-marathon distance of 21.1 kilometers requires sustained cardiovascular output and efficient pacing throughout the event.
Speed maintenance
The flat profile of the course permits a consistent rhythm, placing a premium on holding a steady target pace without relief climbs.
What would it take you?
Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.
Estimated finish
1:45–2:10
Peak-week training
5–7 h/week
A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.
IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal
Your road to race day
Race day at Semi-Marathon International de Lille is 3 weeks away. This is how a coach divides that time. The first phase starts now.
01Taper2 weeks · Oct 5, 2026 – Oct 18, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
02Race week1 week · Oct 19, 2026 – Oct 25, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is Semi-Marathon International de Lille?
Semi-Marathon International de Lille takes place on Sun, Oct 25, 2026 in Lille, France.
How long is Semi-Marathon International de Lille?
The main route is 21.1 km.
What does Semi-Marathon International de Lille demand?
The Semi-Marathon International de Lille demands sustained running fitness to cover the 21.1 km distance efficiently on a fast, flat road course.
Who is Semi-Marathon International de Lille for?
Semi-Marathon International de Lille is open to all participants.
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