Originally Posted by
Efrem
AA gives lifetime Gold for one million total lifetime miles, l...However, if you have no status, you can earn a maximum of 60K to 100K miles per year from a card, so it can take a very long time to reach Gold that way unless you have more than one credit card
If you earn using the SPG Amex, you can transfer points to AA miles and not only get around that cap, but get a 25% bonus on transfers in 20K blocks.