Even a small blister on your foot can ruin your running experience. The safest approach is to stop running until it heals, but sometimes you must patch yourself up and keep moving. If you frequently develop blisters, you might need to buy better footwear. Runner’s socks that wick away moisture will help decrease the repetitive, slippery friction that leads to blisters. And running shoes that fit well won’t slip around as you run, which can lead to repetitive chafing. If you’ve taken preventative steps, but a blister occurs anyway, do what you can to minimize the pain and prevent further damage.
Stop running immediately once you realize you have a blister. The longer you run on an untreated blister, the worse the damage can be.
Take off your socks and shoes to inspect your feet.
Cover tiny blisters with a large bandage, such as a specialized blister covering sold at pharmacies. In a pinch, a large adhesive bandage will do.
Use a sterilized needle to drain large blisters. Sterilize the needle by holding it in a flame for several seconds or coating it with disinfectant alcohol. Make a tiny hole and allow the fluid to drain.
Apply an antibiotic ointment to the popped blister and cover it with a bandage.
Replace your socks and shoes.
Run a short distance to determine the level of pain. Chances are the pain will subside quickly, although some level of discomfort likely will remain. If it hurts too much, stop running and wait for the blister to heal.