ERMINIG.CC,
L’organizer of the famous “Gravel Tro Breizh“,
but also new ultra distance events and off-road unsupported

Since 2018, our association has been known for organizing the Gravel Tro Breizh: a magnificent – and challenging – off-road ultra-distance event in Brittany. Today, more than ever driven by the pleasure of creating, organizing and living such experiences with participants, we’re back with a small collection of events! And believe us, the Hermine has prepared them with the same care as the GTB!

Discover our events :

Date : April 26 to May 4, 2025
Start / Finish : Lac de Tremelin (35) – 30km west to Rennes
Format : 1300 km +/- 16000M de D+
Type : Off Road unsupported Ultra distance

Since 2018, “Gravel Tro Breizh” is an off road unsupported ultra distance event. Across Brittany to discover ils paths and back roads, its landscapes and rich heritage.
Unsupported adventure to “push your limits”.

Date : April 25 to May 4, 2025
Start / Finish : Lac de Tremelin (35) – 30 km west to Rennes 
Format : 900 km
Type : 100% gravel – small roads and easy trails

GTB series “Spring Edition”: a long-distance adventure in Brittany. Accessible to all in terms of tracks and difficulty. Conviviality and discovery of Brittany will be the watchwords of this GTB series.

Date : Information for 2025 coming soon
Start / Finish : Information for 2025 coming soon
3 distances : 1000, 700 et 450 km
Type : Small road

The Road Tro Breizh is an unsupported long-distance event taking place in Brittany. The challenge takes place in complete orientation, as participants must link segments and checkpoints imposed by the organizers, using the roads and tracks of their choice.

Date : July 19 juillet to august 3, 2025
Start / Finish : Plouarzel (29) – St Véran (05)
Format : around 2240 km +/- 42000 de D+
Type : Unsupported off road bikepacking event

The Sea To Peak is a self-supported bikepacking event following a route between Brittany and Queyras through the center of France

Date : July 26 to august 3, 2025
Start / Finish : Pontgibaud (63) to St-Véran (05)
Format : around 1080 km and 24800 m de D+
Type : off road ultra distance

The Half To Peak is a self-supported bikepacking event following a route between “massif central” and Queyras through the center of France…

Date : Information for 2025 coming soon
Start / Finish : Information for 2025 coming soon
Distance : 300 / 500 / 700 km
Type : 100% gravel – small roads and easy trails

GTB series “Autumn Edition”: a long-distance adventure in Brittany. Accessible to all in terms of tracks and difficulty. Conviviality and discovery of Brittany will be the watchwords of this GTB series.

Date : back soon – we hope
Place : looking for a new location
Format : CX festif made in BZH
Info : Cycling, mud, beer, atmosphere and fun !

L’Ankou Cross a festive cyclo-cross made in BZH. The second edition will be back very soon.

With the support of :