Hmmm, I only run outside as I don't have access to a treadmill. Are you setting the treadmill on a interval uphill, downhill and flat? That might help build your endurance to work up to the harder outside running. I looked for a place I could run that had minimum hills, around my house is NOTHING but hills, big ones and lots of them, I tried running a few times around my house and ended up crying with cramps a few minutes in, so I drive a few minutes to a Greenway that is paved and has some gradual up hill and down hills. Good luck!
I have tried running both indoors (treadmill at the gym) and outdoors (around a lake on a trail). The outdoors running is so much harder! My route isn't too hilly but I can still only go 1/2 as far as I would normally on a treadmill. I find it difficult and I'm a little self-conscious. I'm only starting out running so the treadmill is easier to set my pace and time myself. I would love to run mostly outside though eventually...any tips?
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