5 - Au fil de la Houlle
- Type: mtb
- Network: VTT FFC - Entre Monts et Marais de Saint-Omer
- Operator: HTTPS://WWW.TOURISME-SAINTOMER.COM
- Reference: 5 - Au fil de la Houlle
- network:type: Local
Mountain bike route from the OpenStreetMap community, with statistics, an elevation profile and gpx and kml downloads.