Every year there are thousands of races in Britain, ranging from 5K charity jogs to ultra events and with options over trail, countryside, fell, track and road. Some runners cram in races every weekend, but if you want to maximise your
out instead of making you stronger.Ultras are rarely road races, and they're seldom flat. Avoid problems by incorporating trail, cross-country and hilly sessions into your training. And head to the gym – weight-training will prepare your quads
