Question 854910
Assuming the walk the same pace and started at point zero when time started, it would trace a straight line. 
Let's say your friend walk 3 miles in 60 minutes.
{{{drawing(300,300,-10,90,-1,5,grid(1),
circle(0,0,2),
circle(60,3,2),
green(line(0,0,60,3))))}}}