The Foulées bleues is a running event in Saint-Martin-Boulogne, France, beginning at the municipal stadium and sending runners out near the sea. Organized by Saint-Martin Athlétisme, it provides several race options: 5 km and 10 km races, plus shorter youth courses of approximately 0.4 km, 1.2 km, and 2.1 km.
The series has been held for over 25 years and features six course choices, suitable for children, newer runners, regular road racers, and pairs. It is also part of the Challenge du Boulonnais, connecting the event to the wider local racing circuit around Boulogne.