Interval Training for Swimming

Training for a distance swimming event is very different from training for a run or cycling event. When training for a marathon, for example, you would start out with short runs, and gradually increase your mileage each week as you build up endurance. You may work on sprints to increase speed, but overall the goal is to run further or for a longer period of time to get ready for the event. When training for an open water swim or triathlon, you must do much more than just swim more laps each time you hop in the pool.

First of all, you have to understand that racing any distance over about 200 yards consists of using a combination of aerobic endurance and anaerobic endurance. Aerobic means