When is IRONMAN 70.3 Versailles 2027?

The 2027 date is not yet published on ironman.com. The first edition was scheduled for Sunday 11 October 2026, with starts between 8 and 8:35 am in the Grand Canal: announced for 12 July 2026, it had been moved to October.

How do you enter IRONMAN 70.3 Versailles 2027?

On the race page on ironman.com, where 2027 entries are listed as "opening soon". You must be 18 on race day and hold an FFTri licence or a Licence Expérience. Relay teams have two or three members.

What are the cut-offs?

In 2026: 1h10 for the swim, 5h30 to finish the bike and 8h30 to the finish, cumulative times.

Ironman 70.3 Versailles: how many weeks of preparation?

For an athlete at intermediate level, Endu builds a 21-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 6 sessions per week. You choose 5 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.

Ironman 70.3 Versailles 2027: date, course and training plan

113 km · swim 1.9 · bike 90 · run 21.1Versailles2027 edition: date not announced yet

IRONMAN 70.3 Versailles is the newest half-Ironman in France: announced in February 2026 for 12 July, its first edition was scheduled for 11 October 2026. You swim in the Grand Canal of the palace, ride through the Chevreuse Valley, then run past the Pièce d’Eau des Suisses and through the Potager du Roi before finishing on Avenue de Paris, facing the palace. The 2027 date has not been announced yet.

Your plan for Ironman 70.3 Versailles

A plan set to your level and free days, which adapts to your feedback after each session.

Your level?

14-day trial, cancel anytime.

Ironman 70.3 Versailles at a glance

Date: 2027 edition: date not announced yet2026 edition: 11 October 2026
Formats: IRONMAN 70.3Plan below — 1.9 km swim in one loop in the Grand Canal, 90 km bike in one loop through the Chevreuse Valley, 21.1 km run in three loops. In 2026: start between 8 and 8:35 am, out of the water within 1h10, off the bike within 5h30 and finish within 8h30. Aged 18 and over.
Relais — Teams of two or three, on the same course.
Registration: On ironman.com. As of 10 October 2026, 2027 entries are listed as "opening soon", with no date or price. For 2026 they opened on 12 February. Every race in France requires an FFTri licence or a Licence Expérience, obtained before race day: no documents are accepted on site. The 2026 edition offered qualifying slots for the 2027 IRONMAN 70.3 World Championship.
Official website: ironman.com/races/im703-versailles

The 2026 course

Swim: one 1.9 km loop in the Grand Canal of the Palace of Versailles; transition on Allée de la Reine. Bike: one 90 km loop through the Chevreuse Valley, with the Côte de la Vacheresse (1.6 km at 4.6%), 6 km around the Abbaye des Vaux de Cernay and the 17 Tournants hill (1.3 km at 5.7%); second transition on Allée des Mortemets. Run: three laps along the Pièce d’Eau des Suisses, through the Potager du Roi, then the historic streets, past the École Spéciale d’Architecture and the Salle du Jeu de Paume, before the finish on Avenue de Paris, facing the palace.

What the race asks of your training

A rolling ride, not a mountain one

The organisers describe a course that alternates short climbs and fast sections: the Côte de la Vacheresse (1.6 km at 4.6%), the roads around the Abbaye des Vaux de Cernay and the 17 Tournants hill (1.3 km at 5.7%). Threshold efforts of a few minutes uphill, followed by a firm surge over the top, prepare you for this terrain better than long climbs.

An early-autumn half

Scheduled for 11 October in 2026, the race means holding your form through the summer. IRONMAN lists averages of 9 to 19 °C for the air and 21 °C for the water: a cool early start, in a wetsuit if the water stays below 24.5 °C. A few long rides early in the morning, in your race kit, keep you from discovering the cold straight after the swim.

Three run laps through Versailles

The half marathon is run in three laps, from the edge of the Pièce d’Eau des Suisses to the historic streets. Bike-to-run bricks, with a controlled first few kilometres on foot, teach you not to go off too fast on the first lap, carried by the crowd.

The plan below prepares the IRONMAN 70.3 format, for an athlete at intermediate level with 6 days available per week. Until the official date is out, the example is set for October 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: 21
sessions: 125
sessions / week: 6
peak week: 10.3 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 3–8 · 6 wk
Build
Weeks 9–13 · 5 wk
Specific
Weeks 14–18 · 5 wk
Taper
Weeks 19–20 · 2 wk
Race week
Weeks 21–21 · 1 wk

Volume progression

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

Wk	Phase	Hours	km
1	General preparation	6.3 h	21
2	General preparation	6.6 h	22
3	Baserecovery	5.6 h	19
4	Base	7.2 h	23
5	Base	7.5 h	24
6	Base	7.7 h	25
7	Baserecovery	6.1 h	20
8	Base	8.1 h	25
9	Build	8.5 h	28
10	Build	8.7 h	28
11	Buildrecovery	6.7 h	24
12	Build	9 h	29
13	Build	9.2 h	30
14	Specific	9.5 h	30
15	Specificrecovery	7.2 h	24
16	Specific	9.6 h	30
17	Specific	10 h	32
18	Specific	10.3 h	33
19	Taper	7 h	22
20	Taper	5.7 h	18
21	Race week	3.6 h	8

Sample week — week 12 (Build)

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.

MondaySwimmingEasy
59 min continuous swim
59 min · 2.7 km
TuesdayRunningVery hard
3 × 1.2 km at MAS
2 min 30 s jog recovery
48 min · 8.8 km
ThursdayBrickHard
1 h 30 bike + 17 min run
including 3 × 10 min at threshold on the bike · run at marathon pace
1 h 55
FridaySwimmingHard
10 × 200 m at threshold
20 s recovery
59 min · 2.8 km
SaturdayCyclingEasy
2 h 45 at endurance pace
2 h 45
SundayRunningEasy
Long run 1 h 33
1 h 33 · 15 km

Example generated for a intermediate-level profile (MAS 15 km/h, 6 days available per week). Your plan will depend on your level, availability and feedback.

This plan’s check-up

Pass

A 21-week build (recommended minimum: 12); a longest run never more than 6% above the previous month’s; volume rising at most 13% from one week to the next; 82% of the time at easy effort; the longest session 3 weeks before the race; a taper cutting volume by 65% in race week.

2 worth knowing · 22 checks passed

Remarks

Strength training — No strength session.
Fueling — Long sessions (up to 195 min in this plan) are where race fueling is rehearsed.

The 22 checks passed, in detail

Length of the build — 21 weeks: enough for this race (recommended minimum: 12).
Sessions per week — 6 sessions a week: the minimum for this race is met.
Volume progression — Running volume rises at most 13% from one week to the next (a signal appears beyond 20%).
Long run increase — Each week, the longest run is at most 6% longer than the longest of the previous month (benchmark: 10%).
Lighter weeks — A lighter week comes back regularly (weeks 3, 7, 11, 15, 19).
Intensity distribution — About 82% of the time at easy effort: the most common distribution among trained endurance athletes.
Demanding sessions — No more than 3 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.
Timing of the longest session — The longest session falls 3 weeks before the race: the right time.
Bike-run bricks — 10 bike-run bricks over the last 12 weeks.
Taper — Volume drops 65% 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 (92%).
Swim / bike / run balance — Swim 22%, bike 48%, run 30%: within coaches’ benchmarks.
Frequency per discipline — Each discipline comes back at least 2 times a week.
Sessions per week — 6 sessions a week: enough for a long format.
Open water — 5 open-water session(s) before the race.
Longest ride — The longest ride lasts 195 min (benchmark: 180 to 270 min).
Longest run — The longest run lasts 110 min (benchmark: 90 to 135 min).
Swim distance — The longest swim covers 174% of the race distance.
Long ride increase — The long ride grows in small steps.

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.

Three disciplines, one load

Swim, bike and run are planned together: brick sessions, key sessions spread out, and a coherent total load week after week.

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

“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
“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

Your plan, not a template athlete's

This plan is generated for an athlete at intermediate level with 6 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 Ironman 70.3 Versailles