Ok, you guys confirmed what I thought elevation gain was. Another ? I'm reading about this ride I'm doing (Dairyville Dare) and there's a lot of talk about how tough the hills are because of the AMOUNT of climbing there is- 7500 ft gain in 100k (62 miles)= 120 ft/mile. That (it seems?) is only like a mile and a half of climbing in 62 miles, right? Is that considered tough? I know about grade %, etc- I'm talking about the AMOUNT of climbing. Also, how do you train for hills when you don't have any hills to train on?