I only covered from W1 to W11 then up to W2. With pictures, that was about an hour.
The parking lot can be tight if cars are parked on both sides. There's only a single lane between them.
If you go, the map is a bit deceiving. When you take the trail out of the parking lot, you have to walk about 100 feet till you see a short trail to the right leading to the bulletin board you can see. The bulletin board is on the main trail,.