Hiking with a 3 year old

Our son Jack will be 3 in a few weeks, and suddenly he's become quite excited about hiking. So we've ditched the backpack and started hitting the bay area trails.

Each time we hike together I learn something new about what works and what doesn't. Here are some thoughts:
1) Don't go too far. I'm not willing to drive more than an hour each way with a boy who is just barely potty trained. In practical terms that means I won't cross the Bay Bridge because we ALWAYS get stuck in traffic coming home. Heading north to Marin is possible, but with an hour driving limit we won't get much further than Tam. The peninsula is our best option right now. Point Reyes, Big Basin, Castle Rock, and Mount Diablo will have to wait.
2) Keep it short. We're having great luck with hikes close to 2 miles in length. I always have to remember that if Jack is too tired to hike, I'll be carrying him.
3) Pick a quiet park or preserve. I do not want to dodge mountain bikes or horses or crowds on the busiest trails.
4) Choose the right kind of trail. While the whole family adores singletrack trails through woods and coastal scrub, these aren't best for us. Very narrow trails aren't wide enough to accommodate 2 hikers walking hand in hand, which is essential when we are hiking on trails with a drop-off on one side or that are very steep. It's also essential to be able to see a good distance in front and behind us, because quite often Jack will plop down on the trail to play with leaves or rocks or heffalump traps, and when he does this I need to make sure a bicycle (or mountain lion) doesn't come barreling down the trail and run into us. Hiking-only trails eliminate the possibility of bikes and horses, but wide fire roads through open grassy landscapes work best.
5) Pack snacks and talk about where we'll stop for a snack break. I try to choose trails with benches or someplace to sit along the trail. This also gives us something to work towards, and that helps us keep moving.
6) Be flexible and patient. Sometimes Jack's tired or maybe just doesn't want to hike very far. Tired or not, he stops and spells out each trail sign. I have to be willing to ditch the plan, improvise on the fly, and let him experience our hike in a way that is fun for him.
7) Hydrate!
8) Keep it comfy. Yesterday near the end of our hike Jack complained that his jeans were hurting his legs. Just like his mommy -- I don't find jeans comfortable at all for hiking. Does REI sell technical pants for toddlers? We'll see; in the meantime he'll hike in sweatpants. Make sure his shoes are fitting properly too.
9) Potty talk. Jack's not very willing to use the bathrooms at most of the parks for some reason. I've learned that he has the capacity to hold it for some time. But if he does need to go on the trail, I'll be sure to teach him the best way to pee in the woods. Don't forget the hand sanitizer!
10) Stay on the trail. This isn't a huge issue some places, but many trails are lined with poison oak. Besides, it's good to establish hiking etiquette early.
11) Consider the canines. Jack is somewhat unsure about dogs. He likes them but he doesn't like it when their owners allow their 4-pawed friends to lick or jump up on him. So we'll probably steer clear of places where there are lots of dogs, like Fort Funston, and most of the "western" East Bay parks like Tilden (except nature area) and Redwood.
12) Tick check! I will always check him when we get home to make sure ticks haven't come along for the ride.

Here are 10 destinations we'll return to or explore together in the next few months:
1) Saddle Trail, San Bruno County and State Park. The park is only about 10 minutes from our house. It has a wonderful grassy picnic area, easy parking and bathrooms on site. Wide Saddle Trail sweeps through grassland at an easy grade, and there are very good views of San Francisco and the bay. The whole loop is too long for us right now, but we hike to a bench, have a snack, and then turn around.
2) Valley View or Waterfall loop, San Pedro Valley Park. San Pedro is such a pretty park, and we love that we reliably see animals each time -- deer, hummingbirds, and rabbits are all common. These are singletrack trails, but bicycles are (for the most part) successfully banned, and it's only 20 minutes from our house.
3) Arastradero Preserve. Mostly grassland, Arastradero is easy to get to and easy to hike, with fairly flat trails. We will have to watch out for cyclists.
4) Windy Hill Open Space Preserve. At the edge of Portola Valley, Windy Hill is a huge preserve, but we'll stick close to the trailhead on a 1.6 mile loop around Sausal Pond.
5) Edgewood Park and Preserve. I love this place, but I'm worried about the poison oak on Sylvan Trail. Maybe we'll stick to fire roads here.
6) Sweeney Ridge. Very quick to get to and a wide fire road climbs to the ridge, but there are lots of cyclists and the trail does get pretty steep on the way up.
7) Tennessee Valley, Marin Headlands. It's 4 miles out and back to the beach, but the trail is so flat that I won't mind carrying him a bit if I have to. And the beach at the halfway point is a perfect place for lunch.
8) Gravity Car Grade to Mesa Station, Mount Tamalpais. The Mountain Home trailhead may be at the outer limit for driving time, and there will be quite a few cyclists, but the landscape is pretty open and the trail is a very easy grade.
9) Hawk Hill, Marin Headlands. Nice views, birds, short out and back.
10) Tilden Nature Area. Worth braving the Bay Bridge. A great place to hike (especially Lower Pack Rat to Jewel Lake) and Little Farm is right there. No dogs are allowed in this part of the park.