“Beware of the hills” is the motto at Trail de la Côtière, a trail race in Beynost, Ain, France, approximately 30 minutes by car from Lyon. It typically takes place in mid-October and features three distances: 9 km, 14 km, and 21 km.
The routes are described as nature trails through the countryside surrounding Beynost, with sufficient climbing to make the motto's warning relevant. The race is suitable for runners seeking a short off-road challenge, a middle-distance trail run, or a half-marathon distance course without traveling far from the Lyon region.