It’s got 1200ft of climbing, so that’s less than 100ft/mile, which isn’t that hilly.
What is your benchmark? A Tour De France rider? Your average punter on here? (note that the latter are actually quicker than the former 🙄 ), club rider?
It’s not very quick in roadie terms, but there’ll be plenty of people who are slower, and without knowing the route, how hard you were going etc it’s impossible to say you are in the x percentile.
Closest I can personally relate to is my old commute, which was slightly further and slightly hillier (in Surrey…). Being a commute I wasn’t going flat out, (although average power was fairly high) and that was a 17.3 average.
Does that help!? I thought not 😉