Natures "Call of The Wild"?

OK, I'm sorry to put you through this, but there is nothing worse than being on a 4 mile run and nature "calls" at 1.8 miles. I sound like an Orca whale in labor trying to manage the situation. Plus, you can never get the shoes and warm ups off soon enough when you finally make it home. I leave a trail of running gear all the way to the poop-a-torium. Again I am sorry, but it's an often discussed subject when you are over 50 which you youngsters need to prepare yourselves for. You can thank me later.