Got a report from Trinity Bikes in Redmond on March 20th, 2019 that some really sketchy folks have set up a homeless camp on the “South” trail (the Radlands Outer Loop, shown in red on this map). That trail should be avoided.
The Radlands is a fairly recent addition to the Redmond area MTB scene. There are 8+ miles of rolling terrain through a fairly open forest of Juniper. The trails are similar to Maston. Not a lot of elevation to work with — but some technical obstacles here and there, especially on the black-rated Duck ‘n Cover trail. Plus some great views of the Cascades and nearby Smith Rock.
With low elevation, and rocky soil, The Radlands is a good winter riding option in Central Oregon.