Assuming =total hrs-mins is in E5, I think the formula you're looking for
would be ...
=(HOUR(E5)*12)+(MINUTE(E5)/60*12)

1:00 + 1:01 + 2:19 = 4:20
4 x 12 = 48
20/60 x12 = 4
Therefore = 52 miles

HTH,
Gary Brown


"waynehc" wrote in message
...
eg
Time place Time Place Diff
13:01 psc 14.01 midd 1:00
15:23 psc 16:24 midd 1:01
17:42 midd 19:23 psc 2:19
=total hrs-mins
x by 12 = miles

Need to calc the between 13:01 & 14:01 then the diff in time next entry
Then give Add the two time diffs X by 12 to give me miles