Short but feared by climbers, this Pyrénées-Atlantiques pass owes its reputation to an uneven profile that leaves little respite over barely 10 kilometres.
An uneven ascent to 1,035 metres
From Escot, the road climbs 9.1 km for 705 m of elevation gain, averaging 7.75%, with several long sections exceeding 13%. The lack of a steady rhythm, alternating very steep sections with short flatter stretches, makes it physically demanding despite its short length.
A Tour de France classic
First crossed by the Tour de France in 1978, the Col de Marie-Blanque has been climbed 15 times since, most recently in 2023, usually opening longer stages heading towards the Aubisque or the Soulor.
Getting the ride right
A compact or triple crankset is strongly recommended, as is a wide-range cassette to absorb the sections over 13% through the forest.
When to go
April to October, as the road is generally clear during this window, the pass sitting notably lower than most major Pyrenean climbs.
Good to know
Bielle, on the eastern side, offers a longer but steadier ascent for those wanting to avoid the steepest sections on the Escot side, while the nearby Ossau valley opens onto other major Pyrenean passes.
