Answer :
There are several methods of rounding, but in this case the 'best' one is probably to round up. Rounding down suggests that Kathy actually ran faster.
26.2 (mile) * 6.2 (minutes/mile) = 162.44 rounded up => 163 minutes.
26.2 (mile) * 6.2 (minutes/mile) = 162.44 rounded up => 163 minutes.