I have done this one several times and really enjoy it. It's more a family trail in my opinion than anything. Nothing too too strenuous but there are some parts of it that will get your blood flow going. A few friends and I decided we would run this about a month ago and while the young buck did the entire thing no sweat, the rest of us had to walk certain points. It's a great way to stay in shape though with just enough uphill and down. The views are great the entire time and the gazebo at the top makes for a good little resting spot.
I recommend taking the first left. Its a little more uphill at first but the last mile or two is easier and you'll get shade later on in the hike. Bring plenty of water!
Weekends are filled up so I recommend getting there early and there is a small fee for parking as well.
If you're bringing the pups, they are welcomed but make sure they are on a leash or the rangers will issue a ticket.

Hope you enjoy!