I went solo and lived it!
it starts off next to a nice size stream with a few small waterfalls, very nice easy hike for the first 2 miles.
Then the hatch backs start and it gets more steep. A day hike to "the saddle" is more than enough to satisfy the hiking urge, and you could get up and back down in 4 hours maybe 5.
If you want to camp over night, plan on going up to the Cucamonga peak. Its a pretty long way up but it feels very removed and there is great views of the city way down below. Please keep it litter free and have a great hike! :-)

Words cannot describe the beautiful view.

The most amazing view at the top.

Beautiful trail from start to finish.