Originally Posted by
FBinNY
If you're referring to the route pictured, the problem isn't your bike or the gearing. It's the engine.
Subtracting the earlier bump and descent, you're climbing roughly 200' in 2.5 miles. This shouldn't challenge anyone in decent shape. Its the equivalent of climbing 20 flights of stairs in a bit under half an hour.
Twenty flights of stairs can be walked at a leisurely pace in less than 10 minutes by anyone who's in moderately good aerobic condition. I don't know where you're getting the half an hour thing, but if it takes you 30 minutes to climb 20 flights of stairs, best to take the elevator. The CN Tower, which is about 1500 vertical feet, takes most people about 30 minutes to do.
Two hundred feet of climbing in 2.5 miles is equivalent to a 1.5% grade, and can be done, again, by someone in moderately good condition in 10 minutes.