My daily commute is 25 miles (40 km). Elevation is 96 ft up/down 158 down/up (morning/afternoon). I usually average between 14 and 16 mph, depending on the wind. Today morning's commute was 16 mph and 15.2 mph this afternoon. My average cadence this morning was 77 rpm (highest at 104) and 78 this afternoon (highest at 103). HR was averaging at 152 this morning (highest of 164) and averaging at 144 this afternoon (highest of 160). I'm 54 years old. Started cycling last August but had to stop because of snow in December. Started again two weeks ago.