While other review said it wasn't challenging for hiking there is a strong diversity when trail running
It takes some getting used to because there are only a few trails but there are a number of off-shoot trails. We are able to easily put together a number of trails to create a 4 mile loop. While the terrain itself is fairly calm there are some good climbs and distance climbs that will challenge any runner.
You can also run the Rim trail but the markings are week and it's easy to spend your time back tracking trying to find your way. It's a nice trail once you figure it out but it's very rocky, so you need to watch the step. The final section is very difficult to run down due to loose rock, dirt and it's steep.
There is enough diversity to keep you guessing and trying something new tomorrow.
Hibernia County Park is a Chester County Park. There are a number of trails here, from very short up to a few miles. All of the trails I encountered were graded and gravelled, and some are paved and suitable for wheelchairs.
While not challenging, this is a great place to take someone unfamiliar with hiking, or small children to get them use to trails. Don't expect anything too challenging.
The trail near Brandywine Creek is especially beautiful. However there are picnic sites nearby so do not expect quiet.
Trail map for the park is available in PDF here: http://dsf.chesco.org/ccparks/lib/ccparks/hibernia/hcp_trail_map_2.2.pdf