Grade percentage and length. So, for example, if you come out of Sawyer Camp at Crystal Springs, turn right on Skyline and ride up to the top of the hill, from the South end of the bridge, it's about 1/2 mile of about 6% gradient, gaining 156 feet.
Canada Road is nice - wide, enormous bike lane, nice rolling gradients that you can spin up or charge up, depending how you feel. 6 miles with no stops, starting from 92, and only 2 after that before you get to Woodside. From there, your options expand a lot!
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"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles