Quote:
Originally Posted by Mike ODonnell
If you can run 400-800 meter repeats......you can run 5ks with ease. I trail run only...up and down hills, some flat stretches...usually just run like hell....then walk a bit....then run like hell....etc....turns into a 400-800 random interval training session. Running up hills suck ass....but man they work.
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Yep, I'd recommend this too. 400/800m intervals.