Reply to Nate Barnes, Bike Tour Participant

Hi Nate,
Three things come to mind right away:
1. If you are "seriously kicked" after 20 minutes, you may need to slow down the pace so that you can work out a little longer. It may sound counter-productive, but you said you want endurance. Endurance first. Speed later on. Sounds like you might need to slow down your outdoor runs too. See #3 for more input on that.
2. If you are commited to make substaintal gains in a short period of time, one way to advance is TWO workouts a day. Even if you didn't change the length/effort of your current workout, but added a second 30 minutes per day (i.e., workout in the morning and at night or at lunch then again at night -- depending on your schedule).
3. It's not a secret that treadmill running is "easier" than outdoor running. That is because the belt is moving under your feet... With that said, to make it more comparable to outdoor running, I've read 1% grade on a treadmill is like running flat road outside.
Feel free to call me to talk more.... 603-396-8763 cell.
Lisa :)