Is the Grand Trail Stevenson held in 2027?

No, no edition has been announced. Since late 2025, the 3 Soleils association has stated on its website that it no longer organises any official sporting event, and that website no longer belongs to it today.

When was the last edition?

On 10 and 11 July 2021, without timing or rankings. The edition planned for 16 to 18 April 2022 was cancelled, then the association announced a break, with no sporting event in 2023 or 2024.

Which ultra should you train for instead?

In Haute-Loire, the Trail du Saint-Jacques by UTMB, from 18 to 20 June 2027: 88 km and 3,600 m of climbing for the 100K, 140 km and 6,000 m of climbing for the 100M.

Trail de Stevenson (Grand Trail): how many weeks of preparation?

For an athlete at intermediate level, Endu builds a 25-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 4 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 de Stevenson (Grand Trail): race discontinued, what to prepare instead

109 km · 3,500 m D+Le Monastier-sur-GazeilleRace discontinued: last edition on 10 July 2021

The Grand Trail Stevenson, run by the 3 Soleils association, linked Haute-Loire to Lozère, from Le Monastier-sur-Gazeille to Florac. It is no longer held: the last edition took place on 10 and 11 July 2021, without timing or rankings, the April 2022 edition was cancelled, and since late 2025 the association has stated that it no longer organises any official sporting event. For an ultra in Haute-Loire, the Trail du Saint-Jacques by UTMB, whose 100K finishes in Le Puy-en-Velay, takes place from 18 to 20 June 2027.

Create my plan

Trail de Stevenson (Grand Trail) at a glance

Date: Race discontinued: last edition on 10 July 2021
Formats: Grand Trail Stevenson 109 km (arrêté)Plan below — On the programme of the edition planned for 16 to 18 April 2022, which was cancelled: 109 km in two stages, 36 km from Le Monastier-sur-Gazeille to Costaros on Saturday, then a 73 km loop around Florac on Sunday. The routes published by the organiser show 1,122 m and 2,309 m of climbing. Rankings were planned for the total and for each stage.
73, 42 et 36 km — On the same 2022 programme, also cancelled.
Trail Off — An untimed outing without rankings, planned for Monday 18 April 2022.
Registration: No registration possible: the 3 Soleils association no longer organises official races. Its former website, 3soleils-trail.fr, is now an independent magazine that says it has no link with the association and takes no entries.
Official website: web.archive.org/web/20260515050639/https://www.3soleils-trail.fr

What the race asks of your training

Pick another ultra in Haute-Loire

From 18 to 20 June 2027, the Trail du Saint-Jacques by UTMB offers a 100K of 88 km and 3,600 m of climbing from Monistrol-d’Allier to Le Puy-en-Velay (18 hours maximum), and a 100M of 140 km and 6,000 m of climbing starting in Saugues. Pick one of these races and the plan below adapts to its date.

Two back-to-back stages

The 109 km was run over two days: 36 km on Saturday, 73 km on Sunday. For a stage ultra, back-to-back long-run weekends, with the second run longer than the first, teach you to set off again on tired legs.

Semi-self-sufficiency

The 2022 rules allowed up to 28 km between aid stations, and required water and food reserves, a survival blanket, a whistle and a GPS track or maps. Training with a loaded pack and learning to manage water between distant aid stations applies to any ultra of this kind.

The plan below prepares the same distance, for an athlete at intermediate level with 4 days available per week. Pick your replacement race when you create your plan: it will be calibrated on its date, your level and your feedback after every session.

weeks: 25
sessions: 100
sessions / week: 4
peak week: 10.9 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 3–10 · 8 wk
Build
Weeks 11–16 · 6 wk
Specific
Weeks 17–22 · 6 wk
Taper
Weeks 23–24 · 2 wk
Race week
Weeks 25–25 · 1 wk

Volume progression

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

Wk	Phase	Hours	km	Elev.
1	General preparation	6.4 h	43	1,004 m
2	General preparation	6.6 h	45	1,146 m
3	Baserecovery	5.1 h	36	675 m
4	Base	6.6 h	46	1,047 m
5	Base	7 h	47	1,075 m
6	Base	7.3 h	50	1,219 m
7	Baserecovery	5.7 h	39	813 m
8	Base	7.3 h	49	1,270 m
9	Base	7.8 h	53	1,281 m
10	Base	8.1 h	54	1,465 m
11	Buildrecovery	6.3 h	43	982 m
12	Build	8.2 h	54	1,638 m
13	Build	8.9 h	58	1,655 m
14	Build	8.9 h	59	1,781 m
15	Buildrecovery	7 h	47	1,214 m
16	Build	9.3 h	60	1,899 m
17	Specific	9.7 h	63	2,002 m
18	Specific	9.9 h	63	2,090 m
19	Specificrecovery	7.7 h	54	1,266 m
20	Specific	10.2 h	66	2,197 m
21	Specific	10.6 h	65	2,260 m
22	Specific	10.9 h	69	2,358 m
23	Taper	6.9 h	47	1,228 m
24	Taper	5.4 h	39	408 m
25	Race week	3.6 h	30	67 m

Sample week — week 14 (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.

TuesdayModerate
3 × (8 min climb + 4 min descent)
51 min · 6 km
FridayEasy
56 min easy
56 min · 7.5 km
SaturdayEasy
Back-to-back long run
2 h 04 · 12 km
SundayEasy
Long run 5 h 03
5 h 03 · 33 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 25-week build (recommended minimum: 20); a longest run never more than 10% above the previous month’s; volume rising at most 8% from one week to the next; 96% of the time at easy effort; the longest session 3 weeks before the race; a taper cutting volume by 67% in race week.

2 worth knowing · 16 checks passed

Remarks

Strength training — No strength session.
Fueling — Long sessions (up to 360 min in this plan) are where race fueling is rehearsed.

The 16 checks passed, in detail

Length of the build — 25 weeks: enough for this race (recommended minimum: 20).
Sessions per week — 4 sessions a week: the minimum for this race is met.
Volume progression — Running volume rises at most 8% 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, 15, 19, 23).
Intensity distribution — About 96% 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.
Climbing in training — The plan prepares the climbs and descents (32 sessions with elevation).
Timing of the longest session — The longest session falls 3 weeks before the race: the right time.
Taper — Volume drops 67% 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%).
Climbing in the busiest week — The busiest week climbs 2358 m, for 3500 m on race day.
Back-to-back long runs — The plan has back-to-back long runs (9 weekends).

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.

Elevation as the central variable

Weekly climbing volume, long hilly runs, downhill technique and power-hiking for ultras: a trail plan is not a road plan with bumps.

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.

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.