I’m pretty fit and can climb hills better than most I ride with, but no way would I be contemplating SS if I rode regularly in The Peaks – at least not The Peaks that I know.
Such as the Pennine Bridleway climb out of Hayfield, or tbh pretty much any climb out of Hayfield – you’ll just be pushing, and from near the bottom.
I used to think that, well, apart from the bit about being ‘pretty fit and being able to climb hills better than most I ride with’ that is, but you really do get used that stuff with a singlespeed and I’ve ridden all of it. It wouldn’t be my first choice of bike for a 50-mile day in the Peak, but I have mates who ride ss all the time in that terrain and cope just fine. You adapt and there’s a brilliant simplicity to it.