UPDATE: Continental is now a part of United.Continental runs a recurring promotion, Mileathon, which is similar to US Airways’ Grand Slam, but not nearly as lucrative. Bascially, you earn more miles for more activities that you complete. See below for the reward chart and qualifying activity. The earning period starts Feb 1 and goes thru April 30, 2011. I’ll offer some more analysis after I get a chance to research it a little bit, but you might as well register now.Milestones/Rewards:5 500 bonus miles10 1,000 bonus miles20 2,500 bonus miles30 5,000 bonus miles45 10,000 bonus miles65 15,000 bonus miles85 25,000 bonus miles105 35,000 bonus miles125 50,000 bonus miles150 75,000 bonus miles or a $750 Miles for Merchandise gift card175 100,000 bonus miles or a $1,000 Miles for Merchandise gift cardActivities:Purchase a full-fare BusinessFirst® round-trip ticket. Credits awarded for J fare class booked at continental.com. Activity may be repeated. Credits awarded upon travel completion.20 Purchase a First Class or BusinessFirst round-trip ticket (F,C,D) or Full Fare Economy (Y)12 Purchase a discounted economy ticket (M, E, U, H, Q, V and W fare classes) on continental.com (though many report travel booked through corporate travel agencies do qualify)6 Book online at continental.com (Credits awarded on J, F, C, D, Y, B, M, E, U, H, Q, V and W fare classes booked at continental.com).Activity may be repeated.1 Book a car rental at continental.com. Credits awarded on car rentals booked at continental.com. Activity may be repeated. Credits awarded upon travel completion. See terms and conditions for complete details.Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.3 Book a Best Rate Guaranteed hotel reservation at continental.com. Activity may be repeated.4 Purchase a Continental Airlines Vacations® package6 Purchase continental.com cruises package6 Acquire the Continental Airlines Presidential PlusSM Card30 Card must be acquired between Feb. 1 and March 31, 2011. First purchase must be made by March 31, 2011, to earn Mileathon credit. Learn more and apply now. Credits awarded upon approval. Continental Airlines is wholly responsible for fulfillment of Mileathon credits. Accounts are subject to credit approval. Restrictions and limitations apply. Annual credit card fee applies. Continental Airlines credit cards are issued by Chase Bank USA, N.A. All One Pass terms and conditions apply. See Continental Airlines Presidential PlusSM Card or Continental Airlines Presidential PlusSM Card for Business for pricing and reward details.20 Acquire a Continental Airlines OnePass Plus CardCard must be acquired between Feb. 1 and March 31, 2011. First purchase must be made by March 31, 2011, to earn Mileathon credit. Learn more and apply now. Credits awarded upon approval. Continental Airlines is wholly responsible for fulfillment of Mileathon credits. Accounts are subject to credit approval. Restrictions and limitations apply. Annual credit card fee applies. Continental Airlines credit cards are issued by Chase Bank USA, N.A. All One Pass terms and conditions apply. See Continental Airlines OnePass Plus Card or Continental Airlines World Mastercard® for Business for pricing and rewards details.Purchase or renew a Presidents Club® membership (purchase or renew)2 Enroll in the OnePass frequent flyer program. Only first-time enrollments are eligible for credit. See Mileathon terms and conditions for complete details.2 Sign up for Continental e-mail subscriptionsIncludes OnePass Statement e-mail, News & Offers and continental.com Specials at continental.com. Credits will be awarded per e-mail subscription; for first-time subscribers only. See terms and conditions for complete details.3 Make a ShopOnePass floral purchase[card card-name=‘Chase Sapphire Preferred® Card’ card-id=‘22125056’ type=‘javascript’ bullet-id=‘1’]