Semi-Marathon de Paris 2027: date, course and training plan

21.1 kmParis2027 edition: 7 March 2027

The HOKA Semi de Paris is run on Sunday 7 March 2027, four weeks before the Paris Marathon (4 April 2027). First held in 1993, it is organised from 2027 by Cadence Running United, which changes the course every year: the stated aim is to pass through all twenty arrondissements in four editions. The 2027 route will only be revealed early in 2027. The organisers report 110,000 entries for the ballot.

Your plan for Semi-Marathon de Paris

18 weeks to go: your plan starts this week, set to your level and free days, then adapts to your feedback after each session.

Your goal time?

14-day trial, cancel anytime.

Semi-Marathon de Paris at a glance

Date
2027 edition: 7 March 2027
Formats
Semi-marathonPlan below — 21.1 km on road through Paris, on Sunday 7 March 2027. A new course every year; the 2027 start, finish, timings and aid stations are not published yet. General entry €79 in 2027, a specific price for 2026-2027 FFA licence holders, and 1,000 Passerelle bibs at €25 for eligible runners.
Registration
Bibs for 2027 go through a ballot, open from 8 to 30 September 2026, free and with no advantage for early entrants; you could enter alone or in a team of 2 to 6. Results are emailed from 1 October: a runner drawn has 72 hours to register and pay for the bib (€79 general entry), otherwise the place goes to someone else, and further draws may follow. Without a bib, the options are the Dossards Engagés (running for a charity by reaching a fundraising target), corporate packages and the official resale platform, announced for 1 December 2026. Bibs are in the runner’s name. The medical paperwork (PPS health pass or licence) will be confirmed before the race.

What the race asks of your training

A build-up in the depths of winter

With the race on 7 March, a twelve-week build-up starts in mid-December and runs through the holidays, the cold and the short days. Put your long runs at the weekend, in daylight, and keep the threshold and half-marathon-pace sessions for January and February, when consistency matters most.

A course that changes every year

The organisers change the route every edition and warn that it may include a climb, a drag, cobbles and long straights. Until the 2027 course is published, prepare for varied ground: a few short hills in your easy runs, and half-marathon-pace reps on routes with turns and changes of rhythm, not only on a track or a flat road.

A very crowded start

With 110,000 entries for the ballot, the start will be crowded. Settle your target pace in training, on your last half-marathon-pace sessions, and hold it from the first kilometre without trying to win back time lost in the crowd. The aid station locations will be published before the race: until then, test in training the drink and gels you plan to use.

The plan below prepares the Semi-marathon format, for an athlete at intermediate level with 4 days available per week, with race day on 7 March 2027. Aiming for another format? Enter its distance when you create your plan, which will be calibrated on your level, your available days and your feedback after every session.

weeks
13
sessions
52
sessions / week
4
peak week
4.9 h

Plan structure

Periodised in phases: build the base, move to race-specific work, then taper before the race.

  1. General preparation
    Weeks 1–2 · 2 wk
  2. Base
    Weeks 3–5 · 3 wk
  3. Build
    Weeks 6–7 · 2 wk
  4. Specific
    Weeks 8–10 · 3 wk
  5. Taper
    Weeks 11–12 · 2 wk
  6. Race week
    Weeks 13–13 · 1 wk

Volume progression

Week by week: lighter recovery weeks are built in to absorb the load.

WkPhaseHourskm
1General preparation
2.8 h
28
2General preparation
3 h
30
3Baserecovery
2.4 h
23
4Base
3.3 h
33
5Base
3.6 h
36
6Build
3.8 h
40
7Buildrecovery
3 h
30
8Specific
4.2 h
42
9Specific
4.5 h
45
10Specific
4.9 h
49
11Taper
3.5 h
34
12Taper
2.7 h
26
13Race week
2.3 h
22

Sample week — week 8 (Specific)

Real sessions from the plan with their targets. Each session is detailed step by step, and can be sent to a Garmin or COROS watch.

  • MondayEasy
    51 min easy
    51 min · 8.2 km
  • TuesdayVery hard
    6 × 800 m at MAS
    2 min jog recovery
    57 min · 10.8 km
  • WednesdayEasy
    51 min easy
    51 min · 8.2 km
  • SundayModerate
    Long run 1 h 31
    last 11 min at marathon pace
    1 h 31 · 15.1 km

Example generated for a intermediate-level profile (MAS 15 km/h, 4 days available per week). Your plan will depend on your level, availability and feedback.

This plan’s check-up

Pass

A 13-week build (recommended minimum: 8); a longest run never more than 10% above the previous month’s; volume rising at most 11% from one week to the next; 90% of the time at easy effort; the longest session 3 weeks before the race; a taper cutting volume by 53% in race week.

2 worth knowing · 16 checks passed

Remarks

  • Strength training — No strength session.

  • Fueling — Long sessions (up to 105 min in this plan) are where race fueling is rehearsed.

The 16 checks passed, in detail
  • Length of the build — 13 weeks: enough for this race (recommended minimum: 8).

  • Sessions per week — 4 sessions a week: the minimum for this race is met.

  • Volume progression — Running volume rises at most 11% from one week to the next (a signal appears beyond 20%).

  • Long run increase — Each week, the longest run is at most 10% longer than the longest of the previous month (benchmark: 10%).

  • Lighter weeks — A lighter week comes back regularly (weeks 3, 7, 11).

  • Weight of the long run — The long run keeps a reasonable share of the week.

  • Intensity distribution — About 90% of the time at easy effort: the most common distribution among trained endurance athletes.

  • Demanding sessions — No more than 2 demanding session(s) a week: suited to the level.

  • Hard days back to back — Demanding sessions are separated by easy days.

  • Rest days — At least one rest day a week.

  • Easy run pace — Easy runs are truly easy (slower than 5:43/km).

  • Race-specific work — 7 race-specific sessions in the last block.

  • Timing of the longest session — The longest session falls 3 weeks before the race: the right time.

  • Taper — Volume drops 53% in race week.

  • Intensity during the taper — Short race-pace efforts remain in the last two weeks.

  • Frequency during the taper — The number of sessions stays close to usual (100%).

Endu runs its own plans through the plan check open to everyone: same public rules, same thresholds, same sources. The rules and their sources, and a check of your own plan.

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The full week-by-week table and the sample week, in your inbox. No account needed.

Why this plan works

Science-based periodisation

Base → build → specific → taper, with a recovery week every 3 to 4 weeks. Load goes up, but never two hard weeks in a row without a breather.

Paces, not vague feelings

Every session has target zones (pace, HR) computed from your MAS or a reference performance. A MAS test is built into the plan if you don't know yours.

A plan that listens

After each session you rate how it felt (RPE). Too hard? The plan eases what follows. Skipped a session? It reschedules or absorbs it.

On your watch

On Garmin with the Endu app, on COROS by direct sync: the guided workout shows up on your wrist, step by step.

Reviews

What our users say.

4.8/5

  • “I used to spend more time looking for a plan than following one. Now I have my sessions, I know what to do and I stick to it. Really glad I tried it.”

    Thomas · Running

  • “Training for my first half marathon and honestly, I’m getting into it! I even look at my next sessions ahead of time, when before I was mostly looking for an excuse not to go out 😂”

    Camille · Running

  • “Simple to follow and really handy with the watch. I start my session and off I go.”

    Julien · Running

  • “I took Endu to prepare a trail race with friends. I really like having my week already organised: it motivates me and I enjoy my runs more.”

    Émilie · Trail

  • “What I like is no longer asking myself a thousand questions before going for a run. I follow the plan and I enjoy training.”

    Nicolas · Trail

  • “With work and the kids, I thought I’d struggle to follow a plan. In the end, having a structure helps me a lot. Running has found a real place in my week again, and it feels good!”

    Julie · Trail

  • “A good find to prepare my swimrun! It’s nice to find a plan for this sport. I’ve recommended it to my teammate.”

    Antoine · Swimrun

  • “I run more regularly and, above all, with more desire. For that alone, I’m delighted.”

    Laura · Swimrun

  • “For triathlon, having all three sports in the same schedule really makes my life easier. I spend less time organising my training and I still enjoy following it just as much.”

    Maxime · Triathlon

  • “At first I just wanted to try it. Now checking the next day’s session has become my little evening ritual 😊”

    Sarah · Triathlon

Your plan, not a template athlete's

This plan is generated for an athlete at intermediate level with 4 days available per week. Yours will be calibrated on your MAS, your available days and your feedback after every session. 3 minutes. 14-day trial, cancel anytime.

Create my plan for Semi-Marathon de Paris

14-day trial, cancel anytime.

Frequently asked questions

When is the 2027 Paris Half Marathon?
On Sunday 7 March 2027, four weeks before the Paris Marathon, set for 4 April 2027. The start time is not published yet.
How do you get a bib for the Paris Half?
Through the ballot, which closed on 30 September 2026: results have been emailed since 1 October and further draws may follow. Otherwise, through a charity Dossard Engagé, a corporate package or the official resale, announced for 1 December 2026.
What is the 2027 Paris Half course?
Not yet known: the organisers change the route every year and will reveal the 2027 one early in 2027, along with the start, finish and aid stations.
How much does the 2027 Paris Half cost?
€79 for general entry, paid only if you are drawn. There is a specific price for 2026-2027 FFA licence holders, and 1,000 Passerelle bibs at €25 are set aside for eligible runners.
Semi-Marathon de Paris: how many weeks of preparation?
For an athlete at intermediate level, Endu builds a 13-week preparation. If your race is closer, the plan compresses phases while keeping the taper; if it's further away, it lengthens the preparation, and when the gap is large the preparation starts right away, gently and at your current volume, before building up.
Is this plan well built?
Pass at Endu’s plan check, the same as for any plan: 16 of 16 checks passed. A 13-week build (recommended minimum: 8); a longest run never more than 10% above the previous month’s; volume rising at most 11% from one week to the next; 90% of the time at easy effort; the longest session 3 weeks before the race; a taper cutting volume by 53% in race week. The rules and their sources are public on endu.fr/en/controle-technique.
How many sessions per week?
This example has 4 sessions per week. You choose 3 to 7 training days and the exact days (e.g. Tue, Thu, Sat, Sun): the plan sticks to them.
I'm a beginner, is this plan for me?
The plan adapts to your declared level (beginner to semi-pro): starting volume, progression and intensity change. Endu also offers a "Discovery" mode without a race to build a base first.
Can I follow sessions on my watch?
Yes, on Garmin and COROS. On Garmin, the Endu app (Connect IQ Store) shows today’s session and starts it as a guided workout. On COROS, link your account from your profile: your running, trail and cycling sessions land in the watch calendar. Other brands are not supported yet.
How much does it cost?
14-day free trial, then €7.99/month with no commitment or €59.88/year (€4.99/month). Unlimited objectives and sports.

Checked on 10 October 2026 on the organiser's websites. Details can change: the official website prevails.

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