We booked our trip with Into Africa, & took the Machame route. We lived in Colorado at the time so most of the hiking was fairly easy & we weren't too bothered by the altitude. Summit day was the hardest thing I've ever done. In fact if I'd known how hard it was I probably wouldn't have tried, because I wouldn't have believed I could do it. So glad I did. I learned my limits are much higher than I thought!