This hike is pretty easy, however there are some spots that are quite rocky and have tree roots sticking up. So, be sure to watch your step. I would be comfortable bringing kids 5 and older if they have hiked before. 7 and up if not. On the way down we passed a couple, and the father was carrying a baby in a front pack and his 5 year-old daughter as well. So, it depends on your kids for sure.
The trail starts out pretty flat and wide. There are many wooden paths along the way covering boggy areas.
A bit before you reach Talapus, you will cross a bridge over a stream and you can hear the rumblings of a waterfall.
If you choose to continue to Olallie Lake (I would recommend it if you have time), you will continue on the trail and see a sign that points to Pratt Lake (1 1/2 miles further) or Olallie Lake. Follow the arrow that points to Olallie. Unfortunately we saw the sign but didn't pay attention to the arrows, so wandered a bit before coming back and following the arrows. I guess we were talking to much.
As soon as we sat to have a snack a bunch of Gray Jays swooped down to snatch up any crumbs we might spill. They came amazingly close and were fun to watch.
To get here drive I-90 east to exit 45 (Forest Road 9030). Turn left under the freeway on FR 9030. In about 1 mile bear right at the junction. Continue straight for a couple of miles to the trailhead. A forest pass is required and there is one outhouse available at the trailhead.