Originally Posted by
groovestew
14 miles @ 10 MPH average = 1 hour 24 minutes.
14 miles @ 14 MPH average = 1 hour
14 miles in 1 hour 14 minutes (10 minute savings from 10 MPH avg speed) = 11.35 MPH
Just saying.
If he is using the typical bike computer it may well of shown a 4mph change since it only counts moving time. It doesn't count idle time waiting for lights etc.