Fastest stages
| Nr. | Average speed (km/h) | Stage | KM | Vertical meters | |
|---|---|---|---|---|---|
| 1 | 40.8 | Stage 2 | Aoste - Contrevoz | 97.5 | 1197 | |
| 2 | 40.36 | Stage 1 | Chazey sur Ain-Groissiat - Chazey sur Ain-Groissiat | 101 | 1145 | |
| 3 | 34.26 | Stage 4 | Artemare - Les Plans d'Hotonnes | 105.8 | 2570 | |
| 4 | 32.86 | Stage 3 | Culoz - Ruffieu | 87.4 | 2207 |