“Very rare is it that you find someone with so much knowledge and passion rolled into one. Coach Karp has been working with me for 2-1/2 years and with his guidance I have achieved success beyond my wildest expectations: two-time all stater, New Haven County cross country MVP, and Nike All-American are just a few of the accomplishments I have experienced with Coach Karp. There are so many great things that I could say about coach, the one that comes to my mind a lot is trust. Early on as a runner, I was always second guessing myself if I was doing the right workout at the right time at the right pace. With Coach Karp at the helm, there is no more second guessing and I can concentrate on what I do best and that is run.”
Sean Mueller
High School All-American

“Jason’s expertise in coaching distance runners is excellent. He always conducts himself in a professional manner. He is punctual, reliable, and responsible and serves as an exemplary role model. In my experience, I have found him to be extremely enthusiastic about life with an upbeat and encouraging approach as he demonstrates sensitivity and a singular rapport with everyone. He most definitely practices what he preaches. Jason has worked hard and it is seldom that one finds an individual who embodies high ideals, integrity, and mature judgment as exemplified by Jason.”
Paul Greer
San Diego Track Club Coach and Olympic Trials Qualifier

“Thank you so much for your coaching. It’s a pleasure and an honor to know you and have you in my life. Thank you for who you are and the difference you make in my life and the lives of those you coach.”
Emily Jennings

“I wanted to send a letter of sincere thanks for all you have done to elevate my running to this level. I have enjoyed the small amount of time we have worked together and look forward to the many more years ahead.”
Benjamin Gailey
2:24 marathoner and 2012 Olympic Trials hopeful

“In my opinion, a coach needs to tailor his workouts to the athlete constantly. Jason is very good at adjusting workouts.”
Jon Little
2008 U.S. Olympic Marathon Trials Qualifier

“You’re a great coach, Jason, and I really appreciate all your advice and guidance.”
Sam Corbett

“Thank you so much for coaching us and for sharing all your great advice. It’s been such an amazing opportunity to get to have our own coach and really prepared me for the Boston Marathon.”
Jessica Bledsoe

“Although I have been coaching distance runners for 26 years, been through USA Track & Field Level I and II certifications, and attended countless other clinics, your three hours of presentation that I attended were the most thorough and linear I have ever heard it presented. I truly have enjoyed and utilized your notes to improve my training program.”
Gary Millard
Northwest Track Coaches Clinic Attendee

“For ‘a man of science,’ he was able to communicate excellently – blew us all away with his clarity and with his research and opinions on altitude training and correct lactate info. His bio is impressive. He’s a class act and would be a good pull as a speaker. He even wore a suit with a tie and matching pocket handkerchief! He is the first American I have heard who actually has information right and is not screwing up all methodologies.”
Priscilla Welch
6^th Place, 1984 Olympic Marathon

“Thank you for such a great class. Your style and method of teaching really helped for a great learning environment. I don’t know many people who can talk for four hours and continue to keep the attention of a class week after week. You definitely have a knack for making learning fun, connecting with your audience, and are very knowledgeable and passionate about your subject matter. I know I will remember the teacher who was able to vacillate between being a professor and friend to all of us. Thanks for such a great class and passing your knowledge onto us.”
Deborah McDevitt
Miramar College

“Your lecture was above and beyond enlightening. Never have I had the truth about dietary habits tied in with training put so distilled and succinctly to me before.”
Tim Davis
SCW Fitness MANIA Attendee

“Just want to thank you for an awesome semester in Exercise Physiology at Miramar College. Talking with other students, we thought you were one of the best professors in the Fitness Specialist Program.”
Mark Sun
Miramar College

“You were an inspiration to me. Before I began this class, I hated to walk down the street, but now I feel the need to move and be physical. Thank you for this.”
Colleen Hogan
Monmouth University

“It’s always a pleasure working with you. You have a knack of explaining complex issues clearly and interestingly. ‘Knack’ is probably too small-time a word, when I’m referring to a talent that takes intellect, orderly thinking, and the ability to express oneself.”
Ed Fox
Editor in Chief, Track Coach magazine

“You’re a brilliant writer and have the gift to express even complex concepts in a very easy way. I grasped the deeper meaning of your explanation.”
Eleonora Serra
Run-Fit.com Blog Subscriber & Reader of Secrets of Running Injury Prevention

“Thank you for all that you are doing to improve the sport of distance running. Your continuing articles in Runner’s World are a great asset and inspiration to your fellow runners and coaches.”
Dave Bartholomew
Cross Country Coach, Deer Valley High school, Antioch, CA