Colle San Carlo

Morgex, Italy

The Colle San Carlo is a col with a length of 9.6 kilometer. This is a highest category (HC) col. It is located in Morgex, Valle d'Aosta, Italy. The average grade of this col is 9.8% with a maximum of 11.8%. The Colle San Carlo ascents from 997 meter at the start, to 1.949 meter at the top, with a total of 953 ascending meters.


Colle San Carlo Profile


Distance 9.6 km
Elevation gain 953 m
Average grade 9.8 %
Maximum grade 11.8 %
Climb category HC
Minimum elevation 997 m
Maximum elevation 1949 m

Download the App

Join thousands of cycling fans in our myCols app for iOS and Android. Connect your GPS, keep track of every col you conquer and earn jerseys!

Download iOS App  Download Android App


The Colle San Carlo, also known as the Colle d'Arpy, is the big climb and if it’s neither famous nor habitual in the Giro it’ll be familiar to plenty in the peloton and convoy because it’s a staple of the U23 Giro delle Valle d’Aosta, a top U23 stage race. There are steeper climbs, there are longer climbs but few are as steep for as long with 10km at 10%. It’s steep from the start and stays that way, a regular gradient all the way up and easy for an early attacker to get out of sight quickly in the woodland.

This is the climb where Richard Carapaz built his Giro win in 2019, he attacked here and went on to take the stage & race lead.

- Giro d'Italia 2019 - Stage 14