I had never been to Lord Hill Park despite knowing about it for years (and even living within 15 minutes of it at one point). I thought it was more of an urban park, but this place is lush, remote, and wild. My aunt and I wandered over here on a Saturday afternoon expecting to take a leisurely 40 minute walk. We certainly didn't come prepared for a 2 hour hike in the woods (i.e. no water, no headlamp, no map, no compass... oops!).
The park is beautiful! The hills are pretty gradual, so it's not a strenuous hike, but still more of a heart-pumper than taking a walk down the street. There are a ton of trails to explore, but be warned: many of them are poorly marked or not marked at all, which caused us a lot of confusion. That plus some poor map reading on our part resulted in a bizarre figure-8 hike we did along several of the trails in the northern half of the park. Thankfully there were friendly people who knew the park better than we did and pointed us in the right direction.
We saw a good number of people for a Saturday afternoon, but the myriad of trails allows for them to be dispersed (unlike popular in & out hikes) and gave us many moments of solitude (maybe a few too many since we got so turned around!). There had been quite a bit of rain, so we encountered some very muddy patches, understandably. There were a good number of trail runners, and a handful of folks with dogs. The Pipeline Trail is the least interesting, but good for orienting you if you get lost!
I'm hoping to head back here to do a bit of trail running before long, and to hike up to the View Point next time - it's a great place for folks north of Seattle that's much more accessible than the Cascades.