Dathan Ritzenhein's is Sharing His Build-up for Boston at Competitor Running!

It's rare that professional runners share their training, but 3-time Olympian Dathan Ritzenhein is doing just that at Competitor Running.

Interesting to note that 2 of his workouts last week included 5 x 1.5 miles and 4 x 2 miles @ marathon goal pace.