Our expert says:
Yes, but depending on your level of fitness, you might have to start with a plan of walking and running. if you take the risk and just try to run, there is a chance that you'll make it to say 13km and be completely spent. Those final 8km will be very tough then.
So what you might need to do is begin with a strategy, that says you'll run 3km, walk 1 km. Or maybe do 10 minutes run, 2 minutes walk. Something like that. A plan that will see you recover during the race. Because taking on 21 km is a challenge without training, but if you can break it up into shorter sections, then it's doable.
It's all about managing expectations, and setting a realistic goal for yourself. The first 10km will really determine your race outcome - if that's too fast, then the finish line moves further and further away.
And then obviously, it goes without saying, start training now! Not training too hard, because the risk of injury is high if you squeeze it all in, but just get out and see how you go. Find out what your limit is, how far you can run, how fast, so that you can come up with that strategy based on real information and not guess work.
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