>>1849974Depending on how much climbing is in that day, maybe. Especially if you’re new to it as you said.
It might be possible but not sustainable for multiple days.
Lots of other factors: bike weight, your weight, gear weight, tyre tread, width and rolling resistance, fit, ergonomics, riding position, aerodynamics etc.
It doesn’t have to be about fitness. Some bodily issue or pain might come up after 50+ miles that you never experienced.
For example:
I’m reasonably fit, lean and young.
I did about 4000km/2500 miles last year, commuting and riding. Not really rookie or pro.
This summer i decided to visit relatives 200 miles away, 8000 ft of climbing, by bicycle and ride that in 24 hours or less.
I did it on a surly DT with a bikepacking setup and aero bars.
For preparation I decided to do 30km in one hour for 4 days before the trip and do one rest day before.
I rode about 18 hours total.
Cramps started around 50 miles, but you can push trough it and they stop altogether.
Middle of the day, there was a heatwave and on new fresh asphalt to boot. I burned my lungs and it reduced my breathing capacity.
20 miles before the destination very bad knee joint pain started in one leg. Luckily I had clipless pedals so I could pull with that leg instead of push.
I was bedridden the next day.
