While this trail carries blue/red blazes and connects to CFPA's John Muir trail it is bike legal.
This old forest work road offers a small parking area at the bottom. Torrington Trails Network did a nice job converting it into a relatively smooth, multi-use trail to connect the Sue Grossman Greenway on the Winsted Road to the hike-only John Muir Trail that runs from Sunnybrook to Burr Pond.
Use Buttrick to reconnect to the Burr/Paugnut Main Loop after riding down Whipping Post
. It's a steady grind up (maybe 0.4 miles) but mostly on reclaimed asphalt.