Great advice from Daisy. Training isn't just a question of seeing if you can do it. It's about slowly building body strength, flexibility and endurance over time. Your she, general fitness, and body weight will absolutely affect all of that.

And the best advice she gave is to take slow at first--both in the training and on the first day of the hike.

Slow and steady. Find a pace that allows you to walk for at least 30 minutes without resting. That's your pace for the whole hike.

If you have to stop more often than that to catch your breath, you're going too fast--no matter what your condition or training regimen.