When is the 2027 Alpe d’Huez Triathlon?

From Sunday 25 to Thursday 29 July 2027: duathlon on Monday 26 at 3 pm, Triathlon Kids on the afternoon of Tuesday 27, Triathlon L on Wednesday 28 at 9:30 am and Triathlon M on Thursday 29 at 2 pm.

How do you enter the 2027 Alpe d’Huez Triathlon?

Registration is already open, online on Njuko via the “Inscriptions 2027” button on the official website. Prices are not published on the website itself. Bibs can be transferred until 25 May 2027.

What are the Triathlon L cut-offs?

Out of the water 1h30 after the last swimmer starts (11:15 am), top of the Alpe du Grand Serre by 1:30 pm, Valbonnais by 3 pm, foot of Alpe d’Huez by 4:45 pm, into T2 by 6:45 pm, start of the third run lap by 8:45 pm and finish by 9:45 pm.

Is a wetsuit mandatory?

Yes according to the organisers’ FAQ, which expects water between 16 and 22 °C. The 2027 rules make it mandatory below 16 °C and ban it above 24 °C.

No. Roads stay open to traffic: the rules ban sitting in the slipstream of another athlete or a vehicle, and require riders to follow the rules of the road.

Triathlon de l'Alpe d'Huez: 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.

Triathlon de l'Alpe d'Huez 2027: date, course and training plan

139.4 km · swim 2.2 · bike 118 · run 19.2Alpe d'Huez2027 edition: 28 July 2027

The Alpe d’Huez Triathlon brings together four races from 25 to 29 July 2027, for its 21st edition. You swim in the Lac du Verney, an EDF reservoir where swimming is banned the rest of the year, then ride up to the resort via the 21 hairpins, and run at 1,800 m of altitude. The flagship race is the L, on Wednesday 28 July: 118 km of riding and 3,200 m of climbing, with three passes before Alpe d’Huez. The event is independent, not affiliated to the French Triathlon Federation.

Your plan for Triathlon de l'Alpe d'Huez

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

Your level?

14-day trial, cancel anytime.

Triathlon de l'Alpe d'Huez at a glance

Date: 2027 edition: 28 July 2027
Formats: Triathlon LPlan below — 2.2 km swim in one loop in the Lac du Verney, 118 km bike (3,200 m of climbing), 19.2 km run in three 6.4 km loops (about 100 m of climbing per loop). Wednesday 28 July 2027, 9:30 am start in a continuous flow. Finish by 9:45 pm at the latest.
Triathlon M — 1.5 km swim in the Lac du Verney, 28 km bike (1,415 m of climbing) including the 21 hairpins, 6.4 km run (110 m of climbing). Thursday 29 July 2027, 2 pm start. No cut-off on the run.
Duathlon — 6.5 km run in Bourg-d’Oisans, 15 km bike (1,170 m of climbing) up Alpe d’Huez, 5.5 km run (110 m of climbing) including the Sarenne climb. Monday 26 July 2027, 3 pm start. Two transition areas: bring two pairs of shoes.
Triathlon Kids — For 6 to 15-year-olds (born 2012 to 2021), on the afternoon of Tuesday 27 July 2027, starting from the Alpe d’Huez outdoor pool. From 50 m swim, 1 km bike and 200 m run for the youngest to 150 m, 4 km and 400 m for 14-15-year-olds. No timing, no rankings.
Registration: Registration for 2027 is open, online on Njuko, from the official website; the list of entrants is already published. Prices are not shown on the website. Licence holders upload their 2027 FFTri licence, or a foreign federation licence, on the platform before 30 April 2027; athletes without a licence fill in a health questionnaire when entering, with no medical certificate. Bibs can be transferred until 25 May 2027 (€10 paid by the new holder). Cancellation until 22 June 2027 with a partial refund (€175 for the L, €60 for the M, €30 for the duathlon), or a full refund until 10 July with the “Alpe d’Huez Protect” cover taken when entering.
Official website: alpetriathlon.com

The 2027 course

Triathlon L. Start at 9:30 am in the Lac du Verney, near Allemont, for one 2.2 km loop; T1 is on the lakeshore. The bike heads quickly up the Oisans valley to the foot of the Alpe du Grand Serre (15 km at 6.5%, summit around km 40), crosses the Valbonnais (km 73) and the Col du Malissol (2.4 km at 8.5%), climbs the Col d’Ornon (14.4 km at 4%), drops to Bourg-d’Oisans and then takes on the 21 hairpins of Alpe d’Huez (13.9 km at 8%) from km 105. Nine aid stations on the bike, two of them on the final climb, at La Garde and Huez. T2 is in Alpe d’Huez. The run covers three 6.4 km loops on tracks and tarmac towards the Col de Sarenne, at 1,800 m of altitude, with three aid stations per lap and the finish in the resort.

What the race asks of your training

3,200 m of climbing in 118 km

The L bike leg links the Alpe du Grand Serre (15 km at 6.5%), the Col du Malissol (2.4 km at 8.5%), the Col d’Ornon (14.4 km at 4%) and then the 21 hairpins of Alpe d’Huez (13.9 km at 8%). You need long mountain rides, with climbs of more than 45 minutes at a steady pace, and the discipline to save strength for the last one. The sample plan below is for a classic half-distance race: remember to add this climbing.

Cool water, in a wetsuit

The water in the Lac du Verney is usually between 16 and 22 °C (17 °C on average over the last five editions) and wetsuits are mandatory. You cannot train in the lake: swimming in open water elsewhere, in a wetsuit, in cool water, prepares you for the shock of the start.

Running at 1,800 m after the climb

The run starts straight after the 21 hairpins, at 1,800 m of altitude, on tracks and tarmac towards the Col de Sarenne. Altitude slows your pace: better to run by feel than by the clock. Bricks of a long bike climb followed by 20 to 30 minutes of running prepare your legs for this sudden switch.

Cut-offs all along the bike leg

On the L you must pass the top of the Alpe du Grand Serre (km 40) by 1:30 pm, Valbonnais (km 73) by 3 pm, the foot of Alpe d’Huez (km 105) by 4:45 pm and enter T2 by 6:45 pm. Drafting is banned and roads stay open to traffic: you ride alone, on the right, at your own pace.

The plan below prepares the Triathlon L format, for an athlete at intermediate level with 6 days available per week, with race day on 28 July 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: 122
sessions / week: 6
peak week: 10.8 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	6.1 h	19
4	Base	7.5 h	23
5	Base	7.6 h	24
6	Base	7.9 h	25
7	Baserecovery	6.6 h	20
8	Base	8.1 h	25
9	Build	8.7 h	28
10	Build	9 h	28
11	Buildrecovery	7.1 h	24
12	Build	9.3 h	29
13	Build	9.6 h	30
14	Specific	10 h	30
15	Specificrecovery	7.7 h	24
16	Specific	10.1 h	30
17	Specific	10.5 h	32
18	Specific	10.8 h	33
19	Taper	7 h	22
20	Taper	5.3 h	17
21	Race week	0.8 h	1

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 40 bike + 24 min run
including 3 × 10 min at threshold on the bike
2 h 12
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 18% from one week to the next; 84% of the time at easy effort; the longest session 3 weeks before the race; a taper cutting volume by 92% in race week.

3 worth knowing · 21 checks passed

Remarks

Frequency during the taper — The last two weeks keep only 67% of the usual sessions.
Strength training — No strength session.
Fueling — Long sessions (up to 195 min in this plan) are where race fueling is rehearsed.

The 21 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 18% 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 84% 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 92% in race week.
Intensity during the taper — Short race-pace efforts remain in the last two weeks.
Swim / bike / run balance — Swim 21%, bike 49%, 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 Triathlon de l'Alpe d'Huez