How far is the Trout Lake Hike (Yellowstone National Park)?

The length of the hike around Trout Lake that I quoted in my review of that hike has been questioned.  To see if I can confirm or deny the distances, I estimated the length using the map below (from Google Maps).  So, the yellow line is the approximate route of the hike up to and around the lake.  The unit length is from the map is shown in the lower left corner; the unit length is 200 feet. I've dissected the route in this unit blocks, as shown on the map below.

Now these are approximations, figure +/- 10%. 

The hike from the trailhead to the lake is about 1400 feet, or 0.26 miles

The distance around the lake is about 3200 feet, or 0.6 miles.

The total distance is about 1.1 miles.

I think this is in line with distances provided in the guidebooks.