I live within walking distance of this park so I might be a little partial. This is a beautiful park! And it's not just a 2.8 mile asphalt trail around the park, there is much more to it. There are several wooded trails leading off from the asphalted path. All leading back to the asphalt path. You can't get lost. There's a farm with many animals to check out. The kids will love it. There are two playgrounds and a couple of fishing ponds. The fishing ponds are catch and release. Couple of museums, visitors center and a huge sports complex. This is well worth the drive to come out and check it out. I will get several times a week.
I enjoyed the Kinder Farm Park trail. Walked it on the first warm Sunday after a long winter. Nice trails, not crowded, not entirely flat --but a fairly flat trail, wooded in areas, open in others. Nice trail for families, or a bike ride, or a run. Absolutely a convenient trail for the Annapolis-Baltimore area ... highly recommend it.
The Kinder Farm Park has a nice 2.4 mile, all-paved trail that circles the park. There are also a couple of dirt and grass trails you can take to vary your route. You can also get to the East/West trail from the park which then connects to the B&A trail (perfect for bikers). My wife and I walked the trail in the evening and saw a number of deer (one fawn was only a couple of feet from us). This is a nice park for walking, running and biking. The park has a fee but you can park by the athletic fields and get onto the paved trail from there.