It depends on the speed you were running. If you were going constant sprint speed, then you would be lying. Jogging speed, it is possible. I used to never be able to run at all, then one day something happened ( i cannot say what, or else the magic will wear off
), then i was able to jog hours and hours nonstop without a problem. I used to go for hour long jogs every night and would usually quit cause i had to go s**t, or i was so bored.
The beginning is the hardest part, but once you reach a certain point, its nothing.
But on the other hand, you said you have a crippled leg, so yeah, you are superman.