The parts we actually rode are in green, totaling a bit over 25 miles.
We rode it clockwise, making for a few very steep fire road climbs on the Tolt and some very fun downhill sections on the Puget Powerline trail. The connecting section through the Redmond Watershed was less fun and flowy this way, but most of the optional trail portions would've had steep unrideable singletrack portions going the other direction.
It'd be fun to ride it counter-clockwise and explore the optional loops we didn't take this time.
Right after railing a steep rocky descent on the Puget Powerline trail at great speed, I caught my wheel in a rut at 1mph approaching a gate and laid the bike down — putting a big bruise on top of my left kneecap from hitting it against the top tube :(
The <a href="http://connect.garmin.com/activity/18055126">Garmin track</a> for the "39 Mile Thrilla" that I'd stripped down for Google Earth was from 2007, and there'd definitely been some new houses constructed since then.
Labeled points of interest:
1) We didn't end up going this way, but this red section of trail is definitely gone. It does look like you could easily connect it to the remaining parts on roads through the new subdivision.
2) This red section of trail towards Nike Park <a href="http://redmondcity.blogspot.com/2010/09/education-hill-hiker-asks-for-nike.html">was obliterated</a> by the construction of a new cul-de-sac of houses, as confirmed by a dog-walker just after we tried going around on a <a href="http://redmondcity.blogspot.com/2011/07/have-you-been-on-redmonds-mystery-trail.html">new but unrideable trail segment</a> a little to the east.
3) Some <a href="http://www.redmond.gov/cms/One.aspx?portalId=169&pageId=1502">rad BMX jumps and pump track</a>. They were somewhat eroded, turns out that's because there's <a href="http://www.redmondbikepark.com/">a project to expand them</a> which is <a href="http://www.redmond-reporter.com/news/124013259.html">being appealed</a> by <a href="http://hartmanparkprotectors.com/the-issue/">some asshat</a>, which has halted any work parties
4) The <a href="http://evergreenmtb.org/wiki/index.php?title=Trail:Willows_Fjords">Willow Fjords</a> trail is a potential hardcore extension on the other side of the Samammish River that links with the route if done clockwise