I started thinking about all the miles I've accumulated over the past year and figured we could post our success stories here and how we accumulated them. This isn't thread isn't limited to last year, but more of the major hauls you've had at certain times. This is meant to be limited to mileage accrual. Mine essentially started around the time DL had the Together We Fly team promo with AMEX in which members of your team could earn 20k bonus Skypesos based on the amount of flying within your team. Fortunately as a TN resident (former NW hub state), I was able to form a team and take advantage of it with my first real MR. Thanks in major part to Slickdeals and FlyerTalk, and in part from frugaltravelguy. 20k Skymiles in Spring 2010 from Together We Fly Promo. Out of pocket roughly $140. UA credit card offer of 50,000 miles and no fee. Spent $2.5x at Target, received 50k miles, and closed account two months later. Cost: $0 (I would have spent the $2.5x anyway!) Citi AAdvantage personal and business cards in August of 2010 with low spend to earn 75,000 miles on each. Applied for both on same day and was approved. Closed one account in October, and the other in late January 2011. Net of 150,000 miles on AA. Cost: $0. Earned Gold on US (silver trial and H/S/J). Not mileage worthy in itself, but led to: Grand Slam Promo on US. Out of pocket roughly $500, but $350 of which I received some sort of item in return. One night "reservations" at Knight's Inn - Cleveland TN and Hertz "rentals" at CHA. Net of roughly 120,000 miles. CO credit card in January 2011. 50k miles after one purchase. Still open. Out of pocket: $0. DL Amex in February 2011. 25k after first spend, 25k soon to come after $1k within 3 months. Net of 50,000. Out of pocket: $0. US credit card in February 2011. 35k miles after first spend. Out of pocket: $0. Platinum Amex in February 2011. 50k points transferable to DL with 50% bonus transfer, which also yields Silver status on DL. 75,000 total Skymiles. Out of pocket: $450 (annual fee). $200 recoverable with airline expenses. So in total within the past 11 months, I had a total expense of $1100 ($900 after reimbursemnt) , gold on US (2012), silver on DL (2013), lounge access for a year, and a total mileage accrual of approximately 550,000 miles. This was also all on my own dime.