HHonors is running double, triple and 2,012 miles through March 31 with four airlines.
Air Canada Aeroplan = Double Miles.
US Airways Dividend Miles = Triple Miles.
Delta = 2,012 miles with two night stay. Does not need to be a weekend stay, but will earn a lot of bonus points too if your stay is a weekend stay when combined with other HHonors bonus point promotions.
There are about 450 participating properties for Aeroplan and maybe 475 for American and US Airways. Delta Airlines does not have a list of participating hotels at the time of this post.
The Hawaiian Miles link on the HHonors promotion page linked to an expired United Mileage Plus promotion at the time of this post.
HHonors Earning Miles link shows the standard earning rate for the vast number of airlines partnered with Hilton HHonors. The basic earning rate is 500 miles per stay, except 100 miles for Hampton, Homewood and up to 100 miles for Home2Suites. In most cases, double miles is 1,000 miles per stay (Hilton, Hilton Garden Inn, DoubleTree) or 200 miles per stay (Hampton/Homewood).