therapist and biomechanist Irene Davis from the University of Delaware's Running Injury Clinic. "Your threshold could be at 10 miles a week, or 100, but once you exceed it, you get injured." Various studies have identified injury thresholds at 11, 25, and 40

developed sophisticated variations on the basic approach.Pump up your stride rate to 180 per minute At the 1984 Olympics, Daniels and his wife, Nancy, analysed the stride frequencies of runners from 800m to the marathon. At distances from 5,000m on, the top

ran 2:42:24 in 1975, and Joan Benoit Samuelson ran 2:22:43 in 1983. ("World best" was the euphemism instead of "world record" for road-race performances before January 1, 2004.) This year saw a course record set in the men's race, but, at 2:07:14

of the participants running a 62-mile race consumed 14,000 millilitres of liquid; another who ran only 26 miles, drank only 280 millilitres. The latter runner, not surprisingly, showed the most loss of vascular fluid, resulting in thickened blood plasma and impaired

Amby Burfoot is Executive Editor of Runner's World USA, and the 1968 Boston Marathon winner Imagine that there was an exercise programme that could guarantee to get you in shape with only three identical 30-minute exercise sessions per week. I

."NUTRITIONPass on the extra carbsBread, bagels, pasta, potatoes and pancakes - you just can't get enough, right? Wrong, says sports nutritionist Nancy Clark, author of Nancy Clark's Food Guide for New Runners (£12.95, Meyer & Meyer Sport). Running two or three miles

the result.“I covered 18-23 miles in my long training runs,” says Strand, “and I did the last 9-14 miles at marathon pace or faster. That was much faster than my previous long-run efforts of 17-22 miles at whatever pace I felt like running.”This kind

, still the Hawaii record, after first swimming 2.4 miles and then cycling 112 miles.Always a strong runner, Allen had a lightbulb moment one year at the Cherry Blossom 10-Mile in Washington, D.C. in the USA. He was warming up, doing some strides, when he

toward home. Two hours, nothing to it. When I want to increase my training prior to a marathon, I just add another 9/1 segment on the outbound trip. Now the session lasts two hours and 20 minutes, and I hardly notice the difference. Two weeks later, I do

training for their first marathon, the long run might start in the 10- or 12-mile range and gradually progress over several months to distances approaching 20 miles.Also, some race experience at the 10-mile and half-marathon distances can serve as dress