NO! Not advised. Too risky and unnecessary.
Do 6 X 30-40 sec. hill surges once per week. This will help your stride. Also, do walking lunges after one of your quality days per week.

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You would just be begging for an injury. Why are you concerned about lengthening you stride? If you want to run faster work on faster leg turn over. Weight while running ie ankle weight are not recomended it would not be a natural distribution of the wieght (like body weight). The best way to run faster is to pratcice running faster. Hills are awsome for this (up and down). GL

I use a weight vest instead of ankle weights...

heck no. Go ahead and schedule yourself an apointment with a doctor because your going to need one after you screw up your body like that. As much as people may try and get around and try to find other ways of being fast, the only solution is to eat properly, work on core workout (pushups situps) and put in the miles.

It's easy to be good, it takes much more to be great.

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