Most of us use some form of a bike computer that measures, in the very least, speed and distance. There are lots of options on the market from the most basic to the most advanced. If you have a local bike shop, you might start their. I, personally, use a wireless computer by Sigma Sport. It can be a bit fussy at times but for the money, it works well.
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