Preparing for the 2027 Paris Half Marathon with an AI coach
The 2027 Paris Half Marathon is announced for Sunday, March 7, 2027, under a new name and a new organizer. Here's what's changing, and how to build your preparation with Running Workout.
Last updated: 2026-09-14
What's changing for the 2027 edition
Like the Paris Marathon, the Paris Half Marathon changes organizer from 2027: the Cadence group takes over the race after years under ASO, and the half changes sponsor name to become the HOKA Semi de Paris.
Information verified against several independent running-media sources at the time of writing this page (September 14, 2026): date and organizer announced, final course not yet published. Check the race's official channels for any update.
Date, distance and registration
The 2027 edition is announced for Sunday, March 7, 2027, over the official half marathon distance (21.0975 km).
Bibs are allocated by lottery: the announced application window runs from September 8 to 30, 2026.
How long you need to prepare
Running Workout's half marathon plan runs 10 weeks. For a March 7, 2027 race, that puts the start of preparation around late December 2026.
- 10 weeks of structured preparation, from base to taper.
- 3 or 4 sessions a week.
- A progressive long run up to about 18 km, finishing at half marathon pace.
The full plan details — phases, session types, long run — are on the dedicated half marathon plan page.
How to set up your preparation
Once you have your bib, just start the half marathon plan on the app's Plan screen, entering March 7, 2027 as your race date. Your AI coach then reviews these settings with you, and builds and pushes the sessions to your Garmin watch, week by week.
The plan stays editable at any time if the final course or the date were to change before then.
Frequently asked questions
What is the date of the 2027 Paris Half Marathon?
Sunday, March 7, 2027, pending final confirmation from the organizers — this is the date announced at the time of writing this page.
Has the Paris Half Marathon changed name?
Yes, the race becomes the HOKA Semi de Paris from 2027, alongside a change of organizer (the Cadence group takes over after years under ASO).
How do you get a bib?
By lottery. The announced application window for the 2027 edition runs from September 8 to 30, 2026.
How far ahead of the race should you start preparing?
Running Workout's half marathon plan runs 10 weeks. For March 7, 2027, that puts a preparation start around late December 2026.
Ready to prepare for the Paris Half Marathon?
Start the half marathon plan, entering March 7, 2027 as your race date: your AI coach builds the plan and pushes it to your Garmin.
Start my preparation