John Timmerman served as a Marine on active duty for 26 years. He is a certified personal fitness trainer, and has successfully completed 24 marathons and 23 half marathons. A recreational SCUBA diver, he is also professionally certified as an assistant instructor. John Timmerman currently teaches middle school in Virginia.
Marathon and Half-Marathon Training, One Day a Week (It Can Be Done)
A New Way to Enjoy Marathoning!
by John Timmerman

Marathon and Half-Marathon Training, One Day a Week (It Can Be Done)
A New Way to Enjoy Marathoning!
by John Timmerman
Published Jan 31, 2018
40 Pages
Genre: SPORTS & RECREATION / Running & Jogging