>Cross Training>biking miles=running miles
I've got a fever...
On your deathbed, you won't wish that you'd spent more time at the office. But you will wish that you'd spent more time running. Because if you had, you wouldn't be on your deathbed.
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Agony of Da Feet (#2867)
Run to Win24 Marathons, 17 Ultras, 16 States (Full List)
(wow, been a while since that's been updated...)
You obviously don't work as hard on downhills but I'd say you have to work twice as hard going up hills on a bike.