21.   All three also use the miles for vacations in Europe.

22.   But some new programs involve miles or points that are evergreen or permit earning miles for one line while flying another.

23.   Charles Schwab Corp. and Delta Air Lines Inc. have joined forces to offer customers frequent flier miles for investing through the largest U.S. discount broker.

24.   Christine Witty is a sprint speed-skater who does the mile for endurance, not for glory.

25.   David Rimmer is using his frequent-flier miles for a trip to the moon.

26.   Delta is offering double miles for every purchase using a Delta SkyMiles credit card from American Express.

27.   Eventually, fliers with memberships in both plans will be able to pool their miles for tickets from either carrier.

28.   For the short time they were together, they would ride for miles just for a cup of coffee.

29.   Guides may know less than amateur bird watchers or animal lovers who have traveled thousands of miles for a glimpse of a rare or beautiful creature.

30.   Guys wanted to play and go the extra mile for the coach.