How close together can I put two half marathons?
Racing frequency varies for each runner. The more experience you have with running and racing, the more familiar you will be with your body’s energy level and recovery rate. Take your goals into consideration. Are you wanting to PR (personal record) or just finish? How challenging are the courses? Other things to think about are your current weekly mileage and race history. If you are running around 20 miles a week and never ran a half marathon, I would not suggest that you schedule your second race until you see how you recover. However if you are well rested and experienced you could schedule them within a week of one another-nothing that you would want to do on a regular basis.
Again, each runner is different. If you are really wanting to run an event but are unsure if you should push yourself then you have the option to go easy and make it a training run. Don’t bolt out there and hurt yourself if you aren’t ready. If you are smart about adjusting your weekly mileage, use cross-training exercises, and eat well then you are probably safe to one every six weeks.