A lot of people mentioned test prop as being realy good for endurence. The important thing is to make sure its prop and not cyp. Prop doesnt cause much bloating. Also Prop works fast . People have been saying tey feel it after only a few days and it clears the system fast also. Its the most ideal test for a short cycle.Slimshady is right though. 100 mgs a week is probably to low . Prop is injected every other day .bodybuilders usually start at 100 mgs eod. Maybe 50 mgs eod would be good for a runner. Its important to injct prop at least eod . Its very short acting . So 100 mg a week would be about 25 mgs eod That seems to low