Hiking with guns for physical training and muscle memory. Help!

I have a lot of hikes planed in the up coming weeks. I am training for a 2 week trans sierra hike and I would really like to open carry a hand gun and/or rifle.

Hiking with firearms was a big part of my Marine Corps training and I would like to get back in shape and build some muscle memory with my current firearms.

I've been searching through posts and laws but I just haven't been able to come up with a positive feeling if it is legal or not to do it.

My goal is to come to some sort of form of carry that I can be safe in knowing that where ever I go on any hiking trail in CA I will not be breaking the law.

Right now the only thing that I know will always be legal is a hand gun locked inside of my pack.

Really need some help on this one, and my first trip is this weekend at Laguna mountain in San Diego county.

if it is a State Park, NO guns allowed
National, OC is ok
St or Nation forest is ok
You just need to know where you are all the time and have the availability to lock up if needed.

ok sweet, looks like my hikes are all in national and state forests not parks