Personally, I would use caution during any hunting seasons in the fall and winter, specifically deer season.
This rail-banked section was started back in the 90's, but has really made progress in the past few years. The trail is very well maintained by the Central Kansas Conservancy and is a fantastic addition to the Valkommen Trail in Lindsborg.
There is a five-mile section of trail missing right now; they are currently working with some land owners that aren't exactly interested in sharing the rail-banked land with them for development. I'll be monitoring their progress and update the trail map as soon as changes happen.