Christina Welsh is an athlete based out of St. Petersburg, FL. She recently set PRs of 2:33 (64.8 VDOT) in the marathon and 1:15:36 (62.3 VDOT) for a half marathon.  We connected after learning about her progress using V.O2 for her training. Learn more about her incredible progression from her 3:29 marathon debut in 2019 [...]