Make Mountain Bike Faster

What gears should I use on my 21-speed mountain bike?
Hi. My path to school has a few hills here and there, but all in all it isn’t too bad, and is pretty flat for a lot of the ride. So, I was wondering, with the information I have given, which gears would make my trip faster and easier? Thank you!
What does that mean, ben? How do I find that out?
Simply put Ben is saying select a gear that allows you to pedal at a comfortable rpm. To find out pick a gear if it is to hard or easy select an other one, in a short time you will know what works and when to select a different gear.
Make time for what you really, really love (Mountain Bike Stairs Extreme) – Part 1

