noun
age sixty; one's sixties
Refers to the age of sixty or the decade of one's sixties. Often used in literary or formal contexts, but also in everyday speech when discussing age milestones.
彼は六十路を迎えても元気だ。
He is still energetic even though he has reached sixty.
六十路の坂を越えた。
I have passed the hill of sixty (i.e., turned sixty).