This is America's biggest tour cycling race. We have the Tour of Utah and the Colorado Classic, but neither are as big as the Tour of California. I watch this one every year. The event brings big names every year (Sagan and so forth). These guys go hard. Last year, the top 5 finishers finished in a minute of one another (over a multi-day race). If you have access to it, it is definitely worth the watch. It's a great event as a conditioner for the Tour de France in July.

Day 1 (Su): Stage 1, Starts at 1 PST and 4 PM (EST) tomorrow (NBC Sports Network, NBCSN network), 3 hours.
Day 2 (Mo): Stage 2, same times as Sunday, NBCSN.
Day 3 (Tu): Stage 3, Starts at 1:30 PST and 4:30 PM (EST), NBCSN.
Day 4 (We): Stage 4, same times as Tuesday, NBCSN.
Day 5 (Th): Stage 5, same times as Tuesday, NBCSN.
Day 6 (Fr): Stage 6, Starts at 2 PST and 5 PM (EST), NBCSN.
Day 7 (Sa): Stage 7, Starts Noon PST and 3 PM (EST) on regular NBC (not NBCSN).