GR®37 Guidebook: The Great Crossing of Inland Brittany

 

Discover the soul of Brittany, from Saint-Malo to the Crozon Peninsula.

Are you familiar with the coastal path? Now dare to venture into the heart of the countryside! The GR®37 is the ideal alternative for those who want to escape the crowds of the coast and immerse themselves in a wild, mystical, and unspoiled Brittany. Over 500 km, this east-to-west route takes you from medieval towns to the peaks of the Monts d'Arrée.

 

🥾 A route between legends and untamed nature

 

This 25-day trek is a true mosaic of Breton landscapes:

• Forests & Mysteries: Cross the legendary woods of Brocéliande.
• Wild Terrain: Hike the moors and ridges of the Monts d'Arrée.
• Waterfront: Follow the Nantes-Brest Canal and the peaceful shores of Lake Guerlédan.
• Historical Heritage: Stop in charming villages like Vitré or Fougères.

🛠️ The essential tool for your long-distance hike

 

Designed to make planning your adventure easier, whether you're going for a weekend or a month:

• Flexible route planning: A step-by-step description for the complete crossing (25 days) or suggestions for ready-made loops of 2 to 4 days.
• On-the-ground expertise: Precise and reliable descriptions of marked trails.
• Practical guide: All the information on accommodations, transportation options, and preparation tips.
• Digital: Access to downloadable GPX files for safe navigation.

Why choose the GR®37? While the GR®34 offers the sea, the GR®37 offers silence and mystery. This is the perfect trail for those seeking a complete escape, winding through deserted moors and hidden valleys. A sturdy pocket-sized guidebook that will become your constant companion, from the Emerald Coast to the Iroise Sea.

 

2026 Edition