When is the 2027 Aquaterra Swimrun?

The 2027 date is not announced yet. The 2026 edition, the festival’s 15th, took place on Monday 13 July, with the M swimrun starting at 8 am; the L had started the day before, on Sunday 12 July.

How do you register for the Aquaterra Swimrun?

Online only, on Njuko from the official site, with an FFTri licence or a “Licence expérience” bought at registration. No race-day entries. In 2026, registration closed on the evening of 11 July.

Can you race the swimrun solo?

Yes on the S and the M, which are raced solo or in pairs; the L is pairs only. The 2026 rules do not list the permitted swim kit (wetsuit, paddles, pull buoy, tether): check with the organisers.

Trail Aquaterra (SwimRun): how many weeks of preparation?

For an athlete at intermediate level, Endu builds a 10-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.

Trail Aquaterra (SwimRun) 2027: date, course and training plan

20 km · 600 m D+ · 4.3 km swim · 15.6 km runBort-les-Orgues2027 edition: date not announced yet

Aquaterra is an outdoor sports festival founded in 2011 around the reservoir of the Bort-les-Orgues dam, on the Dordogne, where Corrèze, Cantal and Puy-de-Dôme meet: trail races, hikes and, since 2017, three swimruns. The M format, “Le Beau Lieu”, covers about 20 km and 600 m of climbing, solo or in pairs, with eight swims in the lake. When possible, the courses pass through the inside of the EDF dam.

Your plan for Trail Aquaterra (SwimRun)

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

Your level?

14-day trial, cancel anytime.

Trail Aquaterra (SwimRun) at a glance

Date: 2027 edition: date not announced yet2026 edition: 13 July 2026
Formats: Swimrun S « Le Val-Bort » — About 10 km: 7.6 km of running and 1.9 km of swimming in 4 sections according to the 2026 rules, 200 m of climbing. Solo or in pairs, age 16+. 8:30 am start on Place Marmontel, finish at Château de Val.
Swimrun M « Le Beau Lieu »Plan below — About 20 km: 15.6 km of running and 4.3 km of swimming in 8 sections according to the 2026 rules (the race page says 21 km including 2.9 km of swimming), 600 m of climbing. Solo or in pairs, age 18+. 8 am start on Place Marmontel, finish at Château de Val.
Swimrun L — About 41 km in pairs, over two days with a night in a bivouac: 13.2 km including 2.7 km of swimming on Sunday, 28.2 km including 6.7 km of swimming on Monday (2026 rules), 1,100 m of climbing. A round of the French swimrun championship, with an Open version too. Age 18+.
Trails et randonnées — On the same day: trail races of 85 km (3,700 m of climbing), 50, 27, 16 and 8 km, hikes of 27, 16 and 8 km, and an 8 km hike with your dog.
Registration: Online only, on the Njuko platform linked from the official site, while places last; no race-day entries. A current-year FFTri licence, or a one-day “Licence expérience”; foreign athletes must provide a licence. In 2026, the M cost €100 in pairs and €60 solo from 1 February to 15 March, then €130 and €75 until 31 May, then €160 and €90 (a “per person” table in the rules), and entries closed on 11 July at 11:59 pm. Nothing is published for 2027 yet: the site currently presents the Automnale d’Aquaterra, trail races without a swimrun on 28 and 29 November 2026.
Official website: trail-aquaterra.com

The 2026 course

Start on Place Marmontel, in Bort-les-Orgues. The first 9.5 km, shared with the S format, alternate four running sections and four swims (450, 300, 610 and 520 m) up to Château de Val, the first aid station. The second part goes by the Pont d’Entraigues before returning to Château de Val: four swims (670, 760, 310 and 670 m), a 3.5 km running section and an aid station at the campsite, at km 17.9. Finish at Château de Val after 19.9 km according to the 2026 rules, which warn that distances vary with the lake level.

What the race asks of your training

Eight times into the water

On the M you swim eight times, from 300 to 760 m, between running sections of a few hundred metres to 3.5 km. Sessions that link running and swimming without changing, with your race-day kit, prepare you for the transitions better than separate sessions.

Climbing and off-trail sections

600 m of climbing over about 15.6 km of running, on hiking trails and off-trail sections. Some runs on hilly ground, ideally with wet legs straight out of the water, prepare you better than road running.

A reservoir whose level changes

The organisers warn that distances depend on the water level of the reservoir: the swim share of the M ranges from 2.9 to 4.3 km depending on their documents. Better to prepare for the longer one, in open water as soon as possible.

As a pair, and with your own flask

As a pair, you stay together from start to finish and cross the line side by side. Aid stations (Château de Val at km 9.5, the campsite at km 17.9) have no plastic cups: you carry a soft flask or a reusable cup, to be tested in training.

The plan below prepares the Swimrun M « Le Beau Lieu » format, for an athlete at intermediate level with 4 days available per week. Until the official date is out, the example is set for 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: 10
sessions: 40
sessions / week: 4
peak week: 5 h

Plan structure

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

Base
Weeks 1–3 · 3 wk
Build
Weeks 4–5 · 2 wk
Specific
Weeks 6–7 · 2 wk
Taper
Weeks 8–9 · 2 wk
Race week
Weeks 10–10 · 1 wk

Volume progression

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

Wk	Phase	Hours	km
1	Base	3.3 h	18
2	Base	3.6 h	20
3	Base	3.7 h	21
4	Buildrecovery	3.1 h	16
5	Build	3.9 h	22
6	Specific	4.6 h	8
7	Specific	5 h	11
8	Taper	3.4 h	20
9	Taper	2.9 h	16
10	Race week	2.3 h	18

Sample week — week 6 (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.

TuesdayBrickModerate
3 × (8 min swim + 12 min run)
1 h 15
ThursdaySwimmingEasy
1 h 06 continuous swim
1 h 06 · 3.1 km
FridayRunningEasy
30 min easy
30 min · 4.8 km
SundayBrickModerate
Long swimrun 1 h 42
4 swims and 4 runs, alternating
1 h 42

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 with remarks

A 10-week build (recommended minimum: 8); a longest run never more than 10% above the previous month’s; 94% of the time at easy effort; a taper cutting volume by 55% in race week.

1 worth a look · 2 worth knowing · 17 checks passed

Remarks

Longest swim-run session — The longest swim-run session lasts only 111 min, for a race of about 189 min.
Strength training — No strength session.
Fueling — Long sessions (up to 111 min in this plan) are where race fueling is rehearsed.

The 17 checks passed, in detail

Length of the build — 10 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 smoothly from week to week.
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 4, 8).
Intensity distribution — About 94% 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.
Swim-run sessions — 10 sessions alternating swimming and running over the last 8 weeks.
Taper — Volume drops 55% 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%).
Share of swimming — Swimming is 37% of swim + run time: within benchmarks (25 to 40%).
Swimming every week — 2 swim sessions a week.
Swimming in race kit — 10 swims with shoes on over the last 8 weeks.
Open water — 4 open-water session(s) before the race.

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.

Transitions and gear

Swim / run transition sessions with paddles and pull-buoy, so your body gets used to switching effort and running wet.

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

“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
“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
“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 Trail Aquaterra (SwimRun)