Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: January 22, 2026

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Waypoints

Start point

Train Station

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23.1 km

Montée vers le col de Portes

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Slope at ~7% on this segment between Lagnieu and Sain-Sorlin-en-Bugey.

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35.3 km

Start of the Col de Portes from Serrières-de-Briord

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Sign for the start of the Col de Portes starting from Serrières-de-Briord, with indications of altitude, difference in altitude, average slope...

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39.3 km

Montagnieu

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A very pretty village.

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47.4 km

Start of the Climb to Col de Portes

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Start of the climb towards the Col de Portes from Bénonces.

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68.2 km

Alternative à la départementale

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Quiet road offering an alternative to the busy D1504.

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70.9 km

Albarine Greenway

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A very pleasant greenway along the Albarine River and the railway line!
Ideal for connecting two different starting points for the ascent of the famous Col de Portes.

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77.8 km

Bosse de Vaux-Bettand

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A short climb that allows you to switch between the two villages, on one side the Albarine Green Way, on the other the start of the climb towards the Col de Porte!

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79.1 km

Vaux-en-Bugey

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107 km

End point

Train Station

Way Types & Surfaces

Way Types

84.3 km

13.5 km

6.99 km

1.75 km

273 m

136 m

Surfaces

105 km

1.69 km

247 m

155 m

Elevation

Highest point (890 m)

Lowest point (200 m)

Weather

Saturday 21 February

15°C

4°C

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Montée vers le col de Portes

Start of the Col de Portes from Serrières-de-Briord

Montagnieu

Start of the Climb to Col de Portes

Alternative à la départementale

Albarine Greenway

Bosse de Vaux-Bettand

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