So everyone knows (first hand) or has heard that winter in the Sierra lasted about 8 MONTHS this time around, and a lot of people have called us to ask if anything at all is melted out yet. Reasonable question to ask, but the answer is HECK YEAH and more is opening up fast.
I'm gonna let someone else answer for Truckee and for the west side of the Tahoe City region. My local close stuff is Antone Meadows, Burton Creek State Park, North Tahoe High School, Tahoe City X-C, all the trails up behind Old County Road, and from there out to Brockway summit and then back to Mt. Watson and to Tahoe City again. I try to keep an eye on that zone and can report on conditions updates as it all melts out.
Right now there's still snow in the shade in the Antone Meadows/Burton Creek area but you can get around. If you avoid the shadiest trails and are willing to cross a few 10 foot long and 1-3 foot deep snowbanks you can do most of the loops out there. A mile to the east of there, north of North Tahoe High School, everything is open in the flats, and this is new in just the past ten days or so. In this area alone you can get a good 5-10 mile ride in without repeating the same path. Next to the east, there are three or four different loops north of Old County road that are pretty much fully open -- just with some water crossings. Generally you can ride every one of the water crossings, they're only pedal deep so you just go slow to minimize erosion/ruts.
Continuing out and up from there... right now you can ride the entire dirt/gravel Old County Road all the way to Brockway Summit. Which means you can get to the junctions of section roads 49 and 95(?) which both lead to several good singletracks that don't really have names, just go and find them and you'll be glad you looked. Most of these are snow-free or only have a small berm every few minutes. Some are still melting out but as long as they're south facing will be clear by June 30th for sure.
Up from there... you can just about ride the Fibreboard Freeway from Brockway to Watson Lake. I haven't seen the section from there to above Tahoe City, can't comment. Verbal report from a caller says the "jumps trail" connecting Antone Meadows to Fibreboard is almost ready... if you know the west end of it just below the jumps/Fibreboard junction where the singletrack is on an east-facing hill, that section is still very snowy for like 200 yards, but that's little enough to still be worth going. That will probably be darned near clear by the end of June.
The high-up classics like the Rim Trail up past Painted Rock and across the south face of Watson are too far out to make a good prediction on yet. I'll start trying around July 4th, probably have the south facing parts around then but likely won't get the north exposures and shadiest parts until mid-July. Likewise we're just not going to be riding close to Watson Lake any time soon, probably mid July before it's in normal summer shape. Still worth trying around the 1st for the adventurous and those who don't mind some hike-a-bike.
The ride I just had this evening opened my eyes to how much there is to ride in the triangle bounded by Old County road on the south, the Rim Trail (still too snowy) on the north, and Elevator Shaft on the west. Out in that triangle is where Road 49 comes down (good for downhill only) but there's a couple of things that tie into it that make that whole zone worth an adventure ride. I'll definitely be heading back up there more. I used to think there was just nothing going on around there until the Rim Trail became rideable past Watson, and I was wrong!
Maybe I'll have to do a slow ride next time with camera and share some views. There's nothing secret or illegal where I'm talking about, just trails that are too hard to map and don't have names, which is fine, so I'll just encourage you to explore.
Anyway, bottom line, if you were wondering whether to bring your bike when you come up for a North Shore vacation soon, YES you can ride anywhere from five to twenty miles easily right now without major snow problems. If you don't know where to start, try parking at the North Tahoe X/C area, or even just at the 7-11 on hwy 28 on top of Dollar Hill. Ride north and try various west or east branches of things until you find your way into the system. You will ride for hours if you have a good eye for less obvious junctions. You can't get lost, any time you want to un-lose yourself just start taking all forks toward the Lake.