Join Date: Mar 2008
Location: California Gold Country
I'm a little late to this party, but I agree with K1W1 that March is pretty iffy for motorcycling in the Sierra. Certainly the high passes will be closed by snow, but it is possible that there would be a spell of good weather that would allow a visit to Yosemite if entering from the west side.
Grand Canyon? Again it's a bit of a crapshoot. I've been there in March and it was just fine -- but you never know. It's the high desert, after all. If you do include Grands Canyon, plan only on visiting the south rim because the north rim will almost certainly be closed by snow.
I'm not so sure about the coast, either. You could see a lot of wet weather over there, and when it's wet it's also pretty cold -- hell, it's sometimes pretty brisk even in the summer when the sun is shining.
Your safest bet by far is to plan for Death Valley/Las Vegas and environs. While lacking the scenery of the coast or high Sierra that area has its own unique charms -- and with all the rain we are currently getting there might be a very spectacular spring wildflower show in the desert just as there was a few years ago.
Feel free to PM me as your plans firm up, and I'll keep you updated on conditions -- or if you want more specific tourist-type advice before then.
I don't know much about cycle clothing stores in SF, as I live in the Sierra foothills near Sacramento. There are some very decent (and cheap) stores around here, but that might not fit into your plans. Are you going to rent a bike?
2016 KTM 390 Duke
"All you need in this life is ignorance and confidence, and then success is sure."
- Mark Twain, 1887