Question: how long should you wait to workout after running a half marathon?
Answer: After shorter races (up to 10K): You can do your next hard run within as few as three days, if you're a high-mileage runner. Otherwise, wait about five days. After a 10-miler or half-marathon: Fitter runners can go long or fast again after four or five days. More casual runners should wait at least a full week.