Ride was very nice yesterday. Rode from the eastern-most part of the trail to nearly all the way to Munith and back. The trail starts out paved and gets progressively worse (or at least harder to ride) as you go west. I turned around when it got to be 1/2 inch deep gravel and my mountain bike couldn't make real progress. As others have noted, a fat bike would likely be fine at that point.
There was supposed to be a bathroom at Stockbridge, but I didn't see one.
Didn't really see anyplace to get water other than restaurants and/or gas stations (both of which were rare). There is a Subway right on the trail just east of Stockbridge. No place to park a bike that I could see, but the food was welcome (also serve personal pizzas and a few other things in addition to traditional convenience store stuff).
Parked https://firstname.lastname@example.org ... 328!8i1664
. Though the Streetview makes it look like you can't park there, things are a bit different than shown. Google maps does have the east-most point wrong, you can't get there from 9-mile road but you can from Hall (though there is no off-street parking).
Google maps also has the trail ending at Stockbridge, which is also wrong, though the going does get tougher at that point.
Fair bit of horse damage to the trail as the ground is still wet. Two serious holes along the way, (8" wide, 4 feet deep?) that need fixing.
Nice ride, I'll do it again.