You can try searching Vezel specs, but this is one number we don't have confirmed yet for the NA market.
Seems like an odd thing to keep secret if they do know it already though. I wonder why they would hold that information so close to the chest."Bones45": Hope you have better luck than I did in getting that info soon! I'm 6'2" and with a bum knee which requires 43" or more of legroom, a number I confirmed after checking the Fit, Civic and CRV in person at dealerships when I couldn't find that HRV dimension anywhere.
Late last October I finally called Honda Customer Service in Calif. and explained my physical issue, stated that I'd be willing to postpone a new car purchase till the (then) newly- postponed target of "Spring '15" if I could find out the key legroom measurement right then rather than risking a wait till 2015 only to find out it was too short. (During the phone call, they had confirmed from corporate records that, over the years, I had owned 2 Hondas and 3 Acuras and so was a serious inquirer.) After checking twice with higher-ups, the phone rep. said that measurement would NOT be released by Honda for any reason until the HRV was officially released for sale in 2015!! Puzzled & peeved, I ordered a 2015 Subaru XV Crosstrek (43.5" legroom) the next day and I love it!