Ronde des Grangeons.
La Ronde Express is the shortest of the three timed courses at the Ronde des Grangeons in Ambérieu-en-Bugey, yet it is no flat ten: nearly all of its climbing sits in one long ascent straight after the start. Pace that hill well and half the race is already solved.
Ronde des Grangeons 2027: Course, Elevation & Route Profile
The loop starts and finishes in Ambérieu-en-Bugey at a little over 270 metres. After half a kilometre to settle in, the course turns uphill and stays there for almost four kilometres at an average of just over seven percent. The lower part rises gently; the steepest stretch comes between km 2.4 and 3.2, where single ramps pass 20 percent. The high point, at about 530 metres, arrives around km 4.2.
From there the course becomes a rolling middle section: a first descent, then constant small ups and downs between 420 and 480 metres until about km 8, with no further long climb. Only the last two kilometres drop clearly and quickly back to the valley and the finish where you started.
The Ronde des Grangeons is held in early September for the 28th time and brings more than 2,700 people out over two days. The Express shares its opening climb with both longer courses but turns off after the top, which makes it the loop for anyone who wants a real trail hill without a multi-hour day.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 0.5 | 3.8 km | 7.2 % | 21 % | +275 m | Cat. 3 |
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 Ronde des Grangeons.
Start under control
On this loop, how you pace the climb decides everything that follows. The first two kilometres of the ascent are gentle enough to tempt you into running fast, but the steep stretch from km 2.4 is still to come. Run the lower part so that you can switch to a controlled hike on the ramps above 20 percent rather than grinding to a halt there.
Hold your rhythm
The rolling middle section is where good runners gain time. If you reach the top with something left, you can lift the pace again here; if you overcooked the hill, this is exactly where you lose, because the short counter-climbs never let you recover.
Spend what is left
The trap comes at the end. The descent over the final two kilometres is fast and invites you to let go, but on tired quads an uncontrolled descent costs more than it gains. Keep your steps short and your upper body upright all the way to the finish.
Training plan for Ronde des Grangeons: 12-week build
Build the base
Most recreational runners finish the Express in one to one and a half hours. The effort has two halves: first a long, steady climb close to threshold, then a rolling stretch with a changing rhythm, and finally a fast descent.
Train race pace
The race is decided on the climb and its steep ramps in the upper third. Train for it with uphill runs of 15 to 25 minutes in one go, and practise switching between running and brisk hiking on steep pitches without your heart rate collapsing or spiking.
Rehearse the course
Just as important is being able to run again straight after the top. Sessions in which a longer climb flows directly into a rolling section at race pace prepare you for exactly that transition.
Arrive fresh
The closing descent needs strong quads and sure footing. Put regular downhill trail running into your weeks and add strength work such as lunges and step-ups, so your legs can still run the last two kilometres under control.
Courses
Download the Ronde des Grangeons course as a GPX file for your watch or bike computer.
Let YOUB adapt your plan for Ronde des Grangeons 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 Ronde des Grangeons.
How long is Ronde des Grangeons?
Ronde des Grangeons is 10 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 Ronde des Grangeons have?
Ronde des Grangeons has around 297 m of elevation gain over 10 km. That affects pacing, muscular load, and preparation for late-race sections.
What is the route profile of Ronde des Grangeons?
Ronde des Grangeons is classified as Hilly, averaging 29 vertical metres per kilometre. 11% of the route is flat, 36% climbs moderately (2 to 6%) and 10% is steeper than 6%.
What climbs does Ronde des Grangeons have?
The hardest climb of Ronde des Grangeons starts at kilometre 0.5, runs for 3.8 km at an average of 7.2% and gains 275 metres. Cycling-convention rating: Cat. 3.
Is Ronde des Grangeons a loop course?
Yes, Ronde des Grangeons is laid out as a loop: start and finish are in the same place.
Is there a GPX file for the Ronde des Grangeons course?
Yes. The Ronde des Grangeons 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 Ronde des Grangeons?
Preparation for Ronde des Grangeons should account for 10 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 Ronde des Grangeons?
The pacing strategy for Ronde des Grangeons should reflect 10 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 Ronde des Grangeons 2027 take place?
Ronde des Grangeons 2027 takes place on September 4, 2027.
Where does Ronde des Grangeons 2027 take place?
Ronde des Grangeons 2027 takes place in Ambérieu-en-Bugey, France.
Which distances does Ronde des Grangeons offer?
Ronde des Grangeons offers 3 distances — La Ronde Express: 10 km; La Ronde des Grangeons: 17 km; La Ronde du Ramequin: 35.5 km.
How do I register for Ronde des Grangeons?
Registration runs through the organiser: rondedesgrangeons.fr. YOUB shows you the course, elevation profile and training plan for your preparation.
