Warning!
You appear to have encountered a "ridgeline" type problem, where you have gone up and over a ridge (or down into a gully and up out the other side) without a transition point in between.
This leads to calculation problems, because while your net elevation change may not be much (or anything), you've traveled up and down without a waypoint at the high / low point and MunterCalculation can't accurately
calculate how long this might take.
Please consider adding an intermediate point (and transitioning if necessary) to make the time estimate more accurate.
If you don't want to be warned of these potential calculation errors in the future, you can ignore them for this session or (if logged in) choose to ignore them forever more by clicking the buttons below.