I went to Snowdon last year to climb it and we unknowingly took the hardest path to the top (Watkin Path, apparently). It was about 3 and a half hours in and we saw people coming back down, asked them how long to the top and they were like 'you're only just about half-way up mate' . That sinking feeling of putting in so much effort so far only to be told there's so much longer to go is gut-wrenching.
We soldiered on though!
Credit to you @StefBWFC! Did your hair go curlier the further up you went?