live in western PA north of Pittsburgh
hills are the norm - near the city and in the surrounding rural areas
most relatively short - not too many longer than 1/2 mile - 1 mile ... although I recall some around 2 miles or so (?)
but many are steep - mountain bike steep ... 10-20 % grade fairly common ... some of the ridiculous hills are around 30 % grade (and over)
Dirty Dozen - 13 hills in Pittsburgh area
https://en.wikipedia.org/wiki/Dirty_...le_competition)
( there are additional videos - including one long video (25+ minutes ?) produced by WQED
these hills are well known in the area - but many in the surrounding rural areas are significantly longer and as challenging (or more)
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