I had been on the Lake Wobegon trail many years ago to where it dead-ended north of Holdingford. Now I finally made it back to ride the extension to the Mississippi River and back. For added thrills I also rode to Albany for lunch and returned.
There seem to be at least 3 trails in Minnesota that use the Soo Line name so it gets a little confusing. This one is an extension of the spur line of the Lake Wobegon trail, starting a little north of Holdingford, which is itself north of Albany, which is on I-94 west of the Twin Cities.
Holdingford has a nice trailhead with all the facilities and a real-life boxcar for added atmosphere. The transition from Lake Wobegon to Soo Line trail is seamless.
The trail is wide, smooth, and has only a couple road crossings of any consequence. The Mississippi River bridge is quite spectacular; I stopped and took in the views of the river and dam for a while. Shortly after that I came to the end of the paved trail where it changes to ATV use. There's one highway bridge where both kinds of vehicles are allowed, but I didn't see any ATVs while I was there, and I doubt that there are many conflicts.
The northern trailhead was not as well-appointed as Holdingford, but still had the basic facilities. There was also a nice trailhead mid-trail in Bowlus.
Smooth, flat, scenic. A very nice ride.