April 7, 2013
If you're a beginner, and/or looking for a good workout, Badger is a great place to start. I recommend climbing up the East side, which starts near the park, but is a little farther up, and by the 2 small water towers.
The trail is actually quite boring, in that it is meticulously groomed (I've seen paved roads that were less smooth), wide, and also not much to look at. There are a few switchbacks on this section, and I maintain a good 6-7mph pace at low-mid gearing.
At the top there are communications towers, and you can either turn around and return the way you came, or continue West along the gravel access road. This road is quite rocky, and I would advise against it if you don't have a full suspension bike. It's also a bit boring as well, since it's just straight and rocky. It finally meets up with the rest of the shared hiking portion of the trail, which is also smooth and switchback'ed, but fun to ride downhill, if no foot traffic is present, to end up at the trailhead on Dallas Road.
I live in the Apartments on Dallas Road, and it takes me about 1 hour to complete a lap from home and back.