Distance Measurement

Peter Hirst's Avatar

Peter Hirst

03 Jan, 2019 08:42 PM

Bug or Feature: I recently compared straight line measurements over distances of about 200 mi les in the Sierra and came up with a real puzzler. Over that distance, the straight line measurements I am getting are consistently greater than known actual miles by a lot:: over 50% or more. example: I used the Distance Measurement tool on a straight line between Lee Vining CA and Lone Pine CA, which has a ROAD distance of 122 miles, and the tool calculates a straight line distance of 170 miles.

Now this is great for measuring trail miles in the Sierra: I get a constitent estimate over similar distances within 5-10% of actual trail miles just using the straight line tool, but still ... what gives?

The attached screen shot is a straight line measurement between Tuolumne Meadows in Yosemite and Crabtree Meadow near Mt WHitney, a known trail distance of 180 miles +-. The measurement in the tool reads 169 +-. What gives?

  1. Support Staff 1 Posted by matt on 04 Jan, 2019 05:56 PM

    matt's Avatar

    It looks like you are reading kilometers instead of miles? Your screenshot says 105.27mi.

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