Kid/Dog friendly XC spots

A new kid means many of my "turns" this winter will be pretty mellow, but he loves being outside so XC trips are definitely do-able. Any suggestions for low angle (road or rail grade), dog friendly (not groomed) XC destinations that aren't overrun with snow machines?

Something akin to the trails near Blewett Pass, but a little closer to Seattle is what I'm thinking. Could I go ski the Stevens Pass nordic trails with the kid/dog before they officially open?

Thanks for any input.

Please remember..... Don't post hole any skin tracks. Dogs are particularly problematic for skin tracks. They tear them up and decorate the track with fecal art. I love dogs but they have no place on a skin track.

The Mount Tahoma Trails Association , located near Ashford is an excellent XC trail system that is dog friendly.
They also have huts that can be used to warm up and clean the kids diapers.
See link.

skimtta.org

The gold creek sno-park at Hyak is an excellent place for dogs and kids. It is important to either get there early or late on weekends because it does fill up.

www.snowrec.org/gold-creek

Snoqualmie nordic trails, and the nordic trail out of Hyak are both close-by options. Snoqualmie Nordic has warming huts, too.

When the snow level is low enough, sometimes you can find a place to walk in the woods, either on the road or the Iron Horse on the south side of Exit 47.

The Mount Tahoma Trails Association , located near Ashford is an excellent XC trail system that is dog friendly.
They also have huts that can be used to warm up and clean the kids diapers.
See link.

skimtta.org

LOTS of kids on the MTTA: snowshoeing, skiing, in backpacks, frontpacks, being pulled in pulks. The huts 4-7 miles from the Sno Parks are available for day use by all (overnight requires reservations) and are great place to warm kids up, feed them, and let them play in the snow. A regular Sno-Park permit is required; it is advised that you carry chains even with AWD. No fee for the trails or daytime hut use (a reservation fee for overnight); but donations (and memberships in this all-volunteer non-profit trails system) are welcome.