Thomas' accident followed teammate and four-time Tour de France winner Chris Froome suffering season-ending injuries in a training crash in France. Bernal is still slated to start the Tour de France on July 6 as Thomas' top aide, though this confirmed race-winning potential after his Paris-Nice title in March.
The 22-year-old Colombian finished 19 seconds ahead of Rohan Dennis overall after they finished Sunday's stage together, 1 minute, 2 seconds behind Hugh Carthy's solo breakaway on snow-lined roads. Bernal was 3:04 clear overall of third-place Patrick Konrad.
More AP sports: https://apnews.com/apf-sports and https://twitter.com/AP_Sports