Thanks for the link, Nial. good article.
I love books about people brave and determined enough to do things most of us would not contemplate, sailing single-handed round the world, climbing Everest without oxygen, running the Badwater (a 135 mile race through Death Valley and up Mt.Whitney, in July!)
I met Dick Beardsley here in Toronto at the expo for the Toronto marathon in October, lovely man.
In 1982 he and Salazar ran shoulder to shoulder for 23 miles at a pace faster than 5 minutes per mile. Beardsley tried to drop him by putting on a hard surge and ran the 24th. mile in 4:30, but Salazar hung tough. Giving it all he had he ran the next mile in 4:20, almost suicidal, and Salazar stayed at his shoulder, taking a 2 second lead at the finish.
For sheer guts in distance runners these two and Prefontaine are pretty near the top of the list.