The road that this trail parallels was created for housing development. It is still largely undeveloped and bordered by woodland, but housing projects have started since the recession, and the trail passes a few construction sites and some roadside utility work. Road traffic is very light in the mornings, and moderate in the afternoons. The only real disturbance to a peaceful ride is the stream of dump trucks from a gravel depot. I live close to this trail, and ride it at least once a week.
The trail pavement is in excellent condition. The ride is mostly gentle up-and-down, except for the descent to a bridge over a swamp (just coasting down, I can reach 30 mph) and the strenuous climb up the other side. There are two road crossings with traffic lights, a railroad crossing, and a few housing development entrances. I generally see only two or three other cyclists and runners.
It is 9.0 miles round trip between White Plains Regional Park (where I park) and the end of the trail at US-301 in La Plata. In the other direction (northbound), it is 1.3 miles round trip between the park and Billingsley Road. You can ride beyond there, but the trail becomes a suburban sidewalk.
For those in need of refreshment, there is an IHOP across the street at the La Plata end of the trail, and a Dash-In at the Billingsley Road end. There is a picnic pavilion next to the Regional Park parking lot.