About 99.5% is on road. Only exceptions are 100 metres of park path on one of the routes, and 50 metres of pedestrian bridge on the other.

Occasionally I use MUPs for various errands, including work-related ones; in particular, there is a stretch of a Lakeshore MUP that is smooth, flat, straight (great sightlines), relatively deserted, right by a road (so access is not a problem), but with few enough intersections that stopping for them is not an annoyance. However, MUPs like that are impossible to build most places: you need just the right combination of factors that does not happen very often. So roads it is.

Maybe I live in the Twilight Zone, but our MUP's really are a dream. They are mostly laid along old railway lines, have very few crossings, cut through many forested regions and run along side rivers, creeks and streams.

The MUPs around here are infinitely more scenic than the roads. They often have fewer stops, in that there are bridges or tunnels crossing over/under many intersections, and there is never a concern that some inattentive idiot will run you down. A ride on one of our MUPs is a slice of heaven.

I honestly doubt that I would even consider a 27 mile, one-way, commute without them.

In my fantasy world I could ride to work at least 1/2 way on a MUP like that.

Cary NC has some decent MUPs that are good for recreation, but none of them go between Cary and where a lot of Cary residents work: Research Triangle Park. The closest thing to a MUP going north from the west side of town is a double wide sidewalk along Davis Drive dubbed "Davis Drive Multi-purpose Trail" in the bike & hike map published by the town. It literally is a sidewalk twice as wide as a normal sidewalk, and crosses every street on the way north. It would take me the first 4 miles of my 10 mile commute.

Once in RTP there is a paved MUP that I could ride the last 1 mile of my commute. Nothing for the 5 miles in the middle except roads.

I stick to the one route going north that doesn't have high speed traffic on it.