trackaholic
Someone who has an addiction to track sports and running. Similar to how an alcoholic seeks intoxication, a trackaholic person craves their daily workout and all actions and thoughts in their life are focused on track and seeking improvements.
Flancy Johns wants to become an all-american athlete. Flancy practices with extreme amounts and speeds of running, wears workout clothes all the time, and is constantly striving to achieve more with her athletic talent. Flancy is a trackaholic.