November 2, 2015
The best biking trails are off pine ridge road. Lots of short criss-crossing up & down trails with some berms & a few smaller jumps. There are good amount of roots in some places too.
There are more trails on the other side of the park near the athletic fields. You might see blue or yellow squares painted on the trees. These trails mostly loop around and/or come out at various spots in Springfield. These trails are a little more technical with some stream crossings, short almost vertical climbs, extremely narrow sections and close clearances between trees going downhill.
The trails can get overgrown in the spring & summer with lots of poison ivy.
Smedly Park is a popular spot with hikers, runners, and dog walkers so keep an eye out for people when biking.
This is an excellent local park, but due to the small total mileage of trails it might not be worth a long drive if you are looking to go great distances on your ride. You will get a workout just biking up and down everything thou, and it's just cool riding under the blue route.
You can pick up the paved multi-use Leiper-Smedley Trail near the Penn State extension. The Leiper-Smedley Trail follows along the blue route and connects with the Baltimore pike bike route to Philadelphia that will take you to Cobbs Creek.