“How long does colon and rectal surgery take?”

About 2-6 hours.

I have no Idea what operation you are referring to. It can be 15-60 minutes for a hemorrhoid operation, depending, and a colon resection can be 1-3 hours depending on what is being done and the technique used, i.e., open, robotic, or laparoscopic. As I am often telling people, the best source for this information is your surgeon. They know the details of what operation they will do.

A couple of hours. Really depends if it's laparoscopic, open, or robotic, and the extent.