Originally Posted by
ooga-booga
irvine itself is super flat. hardest hills will be shortish (half a mile) and super steep 12%+ grades east of pacific coast highway in laguna beach for roadies. for flats/flattish with scenery, you’ll need to bounce over to newport beach and head up the coast towards seal beach.
Irvine is not 100% flat - but most of the area are fairly flat - the hill part are on Shady Canyon/Turtle Rock/UCI area and Portola PKWY.
As everyone said above - Irvine is great place to ride bike and connect to many bike lanes all over places and nearby city neighborhood.