William S. Hart County Park: Hart Trail is a 1.9 mile moderately trafficked point-to-point trail located near Newhall, California that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is accessible year-round.
Good for a quick workout. Mostly fire roads. Steep ascent and descent. From the parking lot, follow the Nature Trail up to the WS Hart Mansion. The trail is a little confusing near the top; but all paths lead to the mansion. Behind the mansion (near the bathrooms) follow the dirt road. This will take you to the ridgeline with some great views of Newhall and Stevenson Ranch. There is also some interesting rock foundations from years gone by. Follow the road to Bison Rd, which is a steep descent. It's mostly dry and sunny, but there are a few opportunities for shade. There is a treat at the bottom as Bison Rd ends at an actual herd of Bison. The trail ends behind a senior center. Follow Market Street back to Newhall Ave and turn right back towards the park.