Mark Sisson, Date of Birth
TweetMark Sisson
American endurance athlete
Date of Birth: 20-Jul-1953
Profession: long-distance runner, triathlete
Nationality: United States
Zodiac Sign: Cancer 
About Mark Sisson
- Mark Sisson (born July 1953) is an American fitness author, food blogger, and a former distance runner, triathlete and Ironman competitor.
Read more at Wikipedia
See Also
- Famous People's Birthdays on 20 July, United States
- Famous People's Birthdays in July, United States
- Famous long-distance runner's Birthdays on 20 July, United States
- Famous long-distance runner's Birthdays in July, United States
- Famous triathlete's Birthdays on 20 July, United States
- Famous triathlete's Birthdays in July, United States