Hill and sprints: tough but necessary workout to improve speed

Detroit hill-.4 miles long with 300m incline

I am a firm believer that hill and sprint work make me faster, but man are they tough! Ran this beast 3 times with a 2 mile sprint after each one.

 Check out this article to learn more about hill workouts:

 

 http://m.active.com/running/Articles/Hit_the_hills_for_running_speed?cmp=17-4-4504