To reserve your spot in the 2017 running of Lawtonâs Spirit of Survival Half Marathon, Relay, 5K or Kidsâ races, register online at AthLinks.com here.
The lactate threshold (LT) (or lactate inflection point (LIP) or anaerobic threshold (AT)) is the exercise intensity at which lactate (more specifically, lactic acid) starts to accumulate in the blood stream.
The author's thesis is it only takes 10 hours of week of riding including anaerobic sessions to raise your fitness level to be able to ride at 25mph. If your in excellent shape already the program will probably work for you but if you're a casual rider the training level wont get you fit enough to do it.