Col d'Ornon
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| Col d'Ornon | |
|---|---|
 Col d'Ornon in spring seen from the road to the village of Ornon | |
| Elevation | 1,360 m (4,462 ft) |
| Traversed by | D526 |
| Location | Isère, France |
| Range | Dauphiné Alps |
| Coordinates | 45°0′32″N 5°58′3″E / 45.00889°N 5.96750°E |
  Col d'Ornon Location of Col d'Ornon | |
Col d'Ornon (1,360 m (4,462 ft)) is a mountain pass through the Dauphiné Alps in the department of Isère in France which connects the communities of Le Bourg-d'Oisans and La Mure. The climb is used occasionally in the Tour de France cycle race, including on the "Queen stage" on 18 July 2013 which finishes with two ascents to Alpe d'Huez.[1]
From the south, the climb starts at Entraigues, from where the ascent is 14.4 km (8.9 mi) long gaining 563 m (1,847 ft) in height at an average gradient of 3.9%, with maximum gradient of 7.4%.[2] For the 2013 Tour de France, the climb officially starts at the village of Chantelouve (1,030 m (3,379 ft)) from where the climb to the summit, ranked Category 2, is a further 5.1 km (3.2 mi) at a gradient of 6.7%.[1]
From the north, the climb commences 3 km (2 mi) from Le Bourg-d'Oisans at La Paute in the Romanche valley. The ascent is 11.1 km (6.9 mi) long, climbing 643 m (2,110 ft) at an average gradient of 5.8%, with maximum gradient of 8.6%.[3]
