RT @runner_kc: Keep integrity; stop cheaters before they start. Some Ultramarathons Now Test for Endurance — and Drugs https://t.co/XxWg8KmKM1

RT @runner_kc: Keep integrity; stop cheaters before they start. Some Ultramarathons Now Test for Endurance — and Drugs https://t.co/XxWg8KmKM1 (via Twitter http://twitter.com/maacher/status/880203430127702016)