For whatever reason, I have always measured my rides on miles, not time. It's just easier in my mind because I base my rides on the route, so it takes however long it takes on any given day. Plus, it's easier for me to judge whether I'm capable of doing a given group ride, sine they too are measured in miles.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher