The Tour Down Under describes Norton Summit as “Undoubtedly Adelaide’s favourite climb for cyclists.” This road is used as a benchmark climb for the city’s serious cyclists, but it’s also a gateway climb with many of the most popular riding areas in the Adelaide Hills accessible from the top.

This climb kicks off stage 3 of Tour Down Under 2025, described by race director Stuart O’Grady as “the toughest stage in the race’s history.”

We couldn’t find an IRL segment that matched Zwift’s start and end points, but the official Strava verified segment covers most of it (Zwift’s starts earlier and extends longer):