Does running long distance hurt my sprinting speed?
No it doesn’t necessarily hurt your sprinting speed, but it doesn’t help your sprinting speed. What long distance helps is your endurance. In a race like the 400 meter dash people do see better times, because their endurance gets so much better. Even in races like the 200 meter dash, having more endurance helps in maintaining your rate of speed. Basically, long distance running will help you, not by increasing your speed, but by maintaining your current speed and helping you improve your 200m and 400m times.
