Hello,
As far as I’m concerned, it’s ‘easily’ doable in two days. When I’m on my own, I go at my own pace: 20 km with 1,500 m ascent and 1,500 m descent. I complete it in 7 hours 30 minutes, including stops for photos and drinks… but without a lunch break.
That said, I’d say it depends on the walking group; if there are several of you, you chat, take more breaks, pay less attention to the path and get lost more often…
It also depends entirely on your navigation tools – whether that’s a map, a GPS watch or a mobile phone – and your sense of direction. The path isn’t always well signposted, and you sometimes have to switch GR routes or change direction, so using GPS navigation will definitely save you time!
I’d say that if you set off early enough – between 7 and 8 in the morning – you can finish the day by 4 or 5 in the afternoon, which leaves you a 1–2-hour buffer for any unforeseen issues.
That’s all!
Machine-translated