I need 11,000 miles for the next Elite level and would like to do it in two trips from SAN to the East Coast (NJ, NY, Maine, and Montreal) on NW and/or CO. The most direct routes will yield about 2450 miles one way. (4900 r/t). A few miles short. I need about 5500 miles per R/T.

Is there a way of booking a Higher mileage trip to the same destinations? For instance, adding SAN-LAX for 500 miles, then connecting to Newark or Montreal. Perhaps some extra miles from a trip to Maine would help.

EXample:
SAN-CLE-YUL = 2526 miles.

Thanks for any ideas.