Harmonie Mutuelle Marathon 10-20K Tours.
The marathon at the Harmonie Mutuelle Marathon 10-20K Tours leaves the Loire embankment in Tours for the vineyards of Rochecorbon and Vouvray, reaches Vernou-sur-Brenne and returns along the river into the old town. The climb onto the vineyard plateau just past Rochecorbon shapes the first half; the second half is flat and fast.
Harmonie Mutuelle Marathon 10-20K Tours 2027: Course, Route Profile & Map
The start is on the Quai Paul Bert on the north bank of the Loire. The first five kilometres run flat and east along the river past Marmoutier. Beyond Rochecorbon, at km 6, the course climbs about 40 metres in just over half a kilometre onto the plateau where the Vouvray vines grow, with short ramps near ten percent. Up there it rolls between 90 and 115 metres until about km 14, then drops over three kilometres back to the valley towards Vernou-sur-Brenne, where the Marathon Duo hands over after 20.7 km.
The second half is the mirror image: back along the Loire through Vouvray and Rochecorbon with almost no height change, before the course crosses the Pont Mirabeau into the city. It then runs via the Place Jean Jaurès and through old Tours to the finish on the Place Anatole France at the south end of the Pont Wilson. The organiser calls the route varied and demanding, a mix of vineyards, riverbank and historic townscape, with bands playing along the way. This course arrived in 2026 together with the new start on the Quai Paul Bert, and the organiser keeps it for 2027.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 6.2 | 0.6 km | 7.1 % | 11.7 % | +39 m | — |
Climb categories follow the road-cycling convention and rate the terrain itself (length and gradient) regardless of sport: Cat. 4 marks the easiest rated climbs, Cat. 1 the hardest, and HC (hors catégorie, “beyond categorization”) is reserved for the most brutal ascents. Short climbs below the Cat. 4 threshold stay unrated.
How to pace Harmonie Mutuelle Marathon 10-20K Tours.
Start under control
Split the race into three parts. The flat first five kilometres tempt you to bank time for the climb; run them at goal pace, because the climb beyond Rochecorbon costs more in heart rate than in seconds if you run it by feel rather than by the watch.
Hold your rhythm
The plateau between km 7 and km 14 decides how much you have left for the second half. The rollers there are short but frequent: hold your effort steady and let the pace drop a little uphill instead of attacking every crest. Let the descent back to the valley roll, without braking and without pushing.
Spend what is left
The real trap comes after that. From km 20 the course is flat to the finish, and anyone who overspent on the plateau loses time exactly where the course is fastest. The organiser's pacers run evenly across the profile and are a good reference for a balanced race.
Training plan for Harmonie Mutuelle Marathon 10-20K Tours: 12-week build
Build the base
For most age-group runners this marathon takes between three and five and a half hours, with a six-hour cut-off. It is a steady aerobic effort with a real climb and a rolling plateau in its first third; after that it is a pure flat marathon.
Train race pace
The decisive part is the transition from the plateau into the flat second half. Train with long runs of 30 to 34 km that are hilly in the first half and flat at marathon pace in the second, so you learn to run evenly after climbing.
Rehearse the course
Add one or two sessions a week with short climbs of 300 to 600 metres, for example hill repeats at threshold, so the ramps beyond Rochecorbon do not break your rhythm. Combine them with marathon-pace segments on flat tarmac, because the last 20 km along the Loire and through the city ask for even pace with no help from the terrain.
Arrive fresh
The race is held at the end of September with an early morning start by the river. Plan your fuelling around the aid stations every five kilometres and practise drinking from cups on the run.
Courses
Download the Harmonie Mutuelle Marathon 10-20K Tours course as a GPX file for your watch or bike computer.
Let YOUB adapt your plan for Harmonie Mutuelle Marathon 10-20K Tours dynamically
Ben connects your goal, the course, current load, recovery, and calendar. Your plan stays pointed at race day even when real life is not perfectly plannable.
Everything about Harmonie Mutuelle Marathon 10-20K Tours.
How long is Harmonie Mutuelle Marathon 10-20K Tours?
Harmonie Mutuelle Marathon 10-20K Tours is 42.2 km long. That distance shapes how much aerobic endurance, pace durability, and race-specific work belong in the training plan.
How much elevation gain does Harmonie Mutuelle Marathon 10-20K Tours have?
Harmonie Mutuelle Marathon 10-20K Tours has around 297 m of elevation gain over 42.2 km. That affects pacing, muscular load, and preparation for late-race sections.
What is the route profile of Harmonie Mutuelle Marathon 10-20K Tours?
Harmonie Mutuelle Marathon 10-20K Tours is classified as Flat, averaging 7.1 vertical metres per kilometre. 53% of the route is flat, 23% climbs moderately (2 to 6%) and 1% is steeper than 6%.
What climbs does Harmonie Mutuelle Marathon 10-20K Tours have?
The hardest climb of Harmonie Mutuelle Marathon 10-20K Tours starts at kilometre 6.2, runs for 0.6 km at an average of 7.1% and gains 39 metres.
Is Harmonie Mutuelle Marathon 10-20K Tours a loop course?
Yes, Harmonie Mutuelle Marathon 10-20K Tours is laid out as a loop: start and finish are in the same place.
Is there a GPX file for the Harmonie Mutuelle Marathon 10-20K Tours course?
Yes. The Harmonie Mutuelle Marathon 10-20K Tours course is on this page as a free GPX download — ready to import into Garmin, Wahoo, Komoot, Strava or any other app that reads GPX.
How should I prepare for Harmonie Mutuelle Marathon 10-20K Tours?
Preparation for Harmonie Mutuelle Marathon 10-20K Tours should account for 42.2 km, 297 m of elevation gain, current training load, and available training time. An adaptive plan helps place key sessions without ignoring recovery and real life.
What pacing strategy works for Harmonie Mutuelle Marathon 10-20K Tours?
The pacing strategy for Harmonie Mutuelle Marathon 10-20K Tours should reflect 42.2 km, 297 m of elevation gain, and your current fitness. Start controlled and keep margin for sections where the profile or fatigue makes target pace harder.
When does Harmonie Mutuelle Marathon 10-20K Tours take place?
Harmonie Mutuelle Marathon 10-20K Tours takes place on September 26, 2027.
Where does Harmonie Mutuelle Marathon 10-20K Tours take place?
Harmonie Mutuelle Marathon 10-20K Tours takes place in Tours, France.
Which distances does Harmonie Mutuelle Marathon 10-20K Tours offer?
Harmonie Mutuelle Marathon 10-20K Tours offers 5 distances — Marathon de Tours: 42.2 km; Marathon Duo: 42.2 km; 20 km de Tours: 20 km; 10 km de Tours: 10 km; Course Handi Fauteuil: 13 km.
How do I register for Harmonie Mutuelle Marathon 10-20K Tours?
Registration runs through the organiser: harmonie-mutuelle.marathon1020ktours.com. YOUB shows you the course, elevation profile and training plan for your preparation.
