Once again writing from the point of a dad with 4 kids. The parking off of Jack's Peak road had picnic tables with views of Monterey Bay as well as bathrooms with running water. There is also an information board with trail maps. A great place to start with kids. There are several trails that converge here and I recommend starting with the skyline self guided nature trail (there is a brochure available for download at the parks site). The skyline trail provides better views of the bay and dead ends into Iris so it is a great add on. Iris and Rhus themselves are really nice forest trails. If you are into geocaching make sure you check your app because there are a ton of them in this park. The weekday hours were from 10:00 to 5:00 so keep that in mind if you are headed there Monday-Friday. Overall this a great place to hike with kids. Great views, enough challenge, and plenty of opportunities to hit the bathroom.
Veronica N. on Sage and Madrone Loop Trail
Trails are well maintained. Some hills but not too bad. Nice views.
$5 entrance fee. The trail is great for kids but make sure they stay in the middle of the path to ensure they don't get poison oak. It is everywhere. One complaint I do have is if you have a dog, ensure that it is on its leash. There was a lady that had 5 dogs and 2 were not leashed and one of the loose dogs came running and chasing my kids. Under different circumstances it would be different but because these dogs were loose and running all through the bush they had ticks that fell off and landed on my wife which i spotted right away. Also chasing my kids I didn't want the dogs brushing up on them because of the poison oak. Like I said, under different circumstances I do not have issues with other peoples animals but when there are signs posted telling you to keep you dogs on a leash it is for very good reasons.
The hike has good lookout points in which you can see the bay and then some.