What kinds of errands do you do during your run? I'm imagining dropping off letters and buying groceries but that wouldn't work very well.
Groceries are the best errands to run! Means you don’t buy loads of stuff you don’t really need because you’ll have to run with it. Then you get the weight training on the way home from them :) I often did that my first few years at uni or did my run first and ended it at shop with the shorter bit home
Stopping by the pharmacy and buying groceries! It's definitely a lot harder and slower with a gallon of milk and bunch of fruit in my backpack though