Running a half-marathon when you can't see the road ahead

Running a marathon, a half-marathon, even a 5K, is no small thing. The training, the early mornings, the commitment can take a lot out of you.

Now, imagine doing it without being able to see.

For blind and vision-impaired runners, it's a whole different level of difficult.

But a Sydney running club is making it possible - pairing vision-impaired runners with specially trained guides.