There are two of mine that are relatively quick ones here in Seattle,
though they're a bit off I-5.

The Ravenna Box will only take you maybe twenty minutes, round-trip.
The Carkeek Box is roughly the same. (Both were supposed to be
kid-friendly, though I'm realizing from being on more hikes these
days, kids can outlast the adults about half the time! Heehee!) :)

-----eliza b/moderngypsy