2+ mph is doable if your'e in excellent condition.
even my marathon conditioned friend took in 12 hrs round trip with breaks (1.75mph).
if you're in decent condition and can handle high elevation, a good time would be 15-18hrs.
its not unusual to see people finishing at night clocking in 20-22hrs. speed is really dependent how well you can handle the elevation.
im from the bay area too, and if you want to just clock in miles, try Stinson Beach to top of Mt Tam then back to Stinson beach. ~20 miles
if you want to do some sheer elevation quad blasting in yosemite, try hiking yosemite valley to clouds rest to tenaya lake, ~18miles, 7100ft elevation gain.
some suggest going to white peak, its one of the most accessible 14ers.
If you want to sleep in high elevation before you start but dont have a campsite, when you drive from the bay area, though yosemite, towards 395, stay a night at mammoth lakes, its at 8k feet. good sleep and good food will make your hike more enjoyable.
you can also try pressure breathing while hiking in elevation to increase oxygen saturation for your blood.
Last edited by mrchowmein; 07/25/17 08:51 PM.