@chdyson, thanks for reaching out. Welcome to the Rachio Community!
The watering time you referenced above is built off of the zone details you entered during your zone setup. The biggest variable in these is the nozzle selection as it impacts the precip rate for your zone. Do you think you have all of these setup correctly?
Assuming you have Smart Cycle enabled, this would explain why your total run time is 7 hours and 33 mins, whereas your watering duration is 3 hours an 12 mins. Smart Cycle eliminates runoff and promotes deeper roots by breaking watering times into shorter durations dependent on your soil, nozzle and slope settings.
If you email our support team [firstname.lastname@example.org], we'd be happy to review your account settings in detail.
Hope this helps.