When is the 2027 Strasbourg Half Marathon?

On Sunday 9 May 2027, during the Courses de Strasbourg Eurométropole. The 2027 start time is not published yet; in 2026 the race started at 7:50 am on Rue de l’Université.

Is there a cut-off at the Strasbourg Half?

Yes, in 2026: 1h20 to reach km 8, in net time. For the Challenge 31.1, the half must be completed within 2 hours.

Does the Strasbourg Half sell out?

In 2026 it was capped at 5,000 runners and a waiting list was open before the race. Registration for 2027 is not open yet.

Semi-Marathon de Strasbourg: 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.

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.

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

21.1 kmStrasbourg2027 edition: 9 May 2027

The DNA half marathon is the headline race of the Courses de Strasbourg Eurométropole, organised for 45 years by the ACSE every spring. In 2026 the 10 May edition drew 13,000 participants over the weekend, with a half capped at 5,000 runners and holding an FFA Silver label, plus a 10K, a 5K and a walk. Start on Rue de l’Université, finish on Rue des Grandes Arcades, in the city centre. The next edition is on Sunday 9 May 2027.

Your plan for Semi-Marathon de Strasbourg

27 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 Strasbourg at a glance

Date: 2027 edition: 9 May 2027
Formats: Semi-marathon DNAPlan below — 21.1 km, Silver label, at most 5,000 runners. In 2026: 7:50 am start on Rue de l’Université, in several waves (pens from under 1h30 to over 2 hours), finish on Rue des Grandes Arcades; cut-off at km 8 after 1h20; open to runners born in 2007 or earlier; €26, €24 for FFA licence holders.
10 km Crédit Mutuel — 10 km, Silver label, at most 4,000 runners; 10:25 am start in 2026.
Challenge 31.1 — The half then the 10K on the same morning, with one bib and the elite pen in both races; time limit of 2 hours on the half.
5 km Ancel — 5 km, 12:05 pm start in 2026.
Registration: Registration for 2027 is not open yet. In 2026 the half cost €26 (€24 for FFA licence holders and groups of at least ten) and had a waiting list before the race; you could enter online until the Thursday before the race, by post or at the ACSE office, and on the Friday and Saturday at the race village on Place Kléber if places remained (€4 extra). An FFA licence (Athlé Compétition, Entreprise, Running or Pass J’aime Courir) or a PPS health pass less than a year old is required. Bibs are collected on Place Kléber with ID; none are sent by post.
Official website: coursesdestrasbourg.eu

What the race asks of your training

A 7:50 am start

In 2026 the half started at 7:50 am, well before the 10K. Do a few long runs early in the morning in the final weeks to settle your wake-up time, breakfast and warm-up: it is also a chance to test what you will eat before the start.

The km 8 cut-off

The 2026 rules stop runners who have not reached km 8 within 1h20, in net time, which is 10 minutes per kilometre. That is no constraint for anyone running the whole half, but a first half needs you to be able to run for 2 hours without walking: long runs of 1h30 to 1h45 late in the build-up check it.

Aid stations every 5 km

The 2026 rules provide an aid station every 5 km, a water point on Quai des Bateliers and a final aid station at the finish. Practise drinking on the run during your long runs and test the drink or gels you will take.

The Challenge 31.1: half then 10K

The Challenge 31.1 links the half (in 2 hours at most) and the 10K, which started at 10:25 am in 2026. If you are aiming for it, prepare for the half first, then in the final weeks add long runs followed, after a short break, by a few kilometres at a brisk pace to learn to set off again.

The plan below prepares the Semi-marathon DNA format, for an athlete at intermediate level with 4 days available per week, with race day on 9 May 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.

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

Volume progression

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

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

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 Strasbourg