Hal Higdon Goofy Challenge Training Plan. Goofy challenge 18 week training plan: Free www.halhigdon.com here is a training program to get you ready to race 50 kilometers (31.1 miles).
The 15k offers a challenge for those who have run their fi Hal higdon is a contributing editor for runner's world, that magazine's longest lasting writer, hal's having contributed an article to rw's second issue in 1966. Runners know higdon best for hi.