




Opens on 28 December 2025
at 08:00
Closes on 24 June 2026
at 21:59
When the Baie de Somme becomes your playground. The Ultrabaie is a trail that takes you from sand to cliffs, between ports, dunes, and seaside villages. Here, there are no mountains or steep climbs, but kilometers carved out of a unique setting: the Picardy coastline and its endless horizons.
What you'll find there:
Course Focus:
The event comprises four distances (and one relay). It all starts on Saturday with a 14km warm-up run between Le Crotoy and Saint-Valery, a flat one-way trip but already full of character. On Sunday, the serious stuff begins: 20km to Le Hourdel, 34km to Cayeux-sur-Mer, and the long stretch, the UB70, which runs to Mers-les-Bains before returning. The profile remains rolling, but the effort is required: changing terrain, heavy sand, pebbles, wind-exposed passages... It's never monotonous. Solo or in a relay, you cross one of the most beautiful bays in the world, a UNESCO World Heritage Site, between land and sea.
3 (good) reasons to participate:
09:00
€450.00
per attendee11:00
€12.00
16:00
€25.00
€22.00
05:30
€112.00
€100.00
05:30
€58.00
€55.00
06:00
€38.00
€35.00
06:30
€28.00
€25.00
UB800 (équipe de 2 ou 3)
€450.00
per attendeeCourse pour tous 3 ou 5 km
€12.00
UB14
€25.00
€22.00
UB70R (relais à 3 ou 4)
€112.00
€100.00
UB70
€58.00
€55.00
UB34
€38.00
€35.00
UB19
€28.00
€25.00