Originally Posted by iab
The double D looks to be more short, intense hills like Barlow and Pinnacle. I have never been on those roads so I don't know for sure.
This is true- the toughest climbs on the DD are a lot like Barlow and Pinnacle. Having now done the 100K route for both events I think the HHH is a bit harder because of the longer climbs, but the DD just keeps coming at you with rolling hills. That said I may just try the 200K for the DD.