Another "fun" alternative to Greenfield that provides a bit more of a challenge is: across from the Swinburne bridge, turn onto Sylvan, Waldeck, Bigelow, all the way to the top at Lydia, then down to the top of Hazelwood. Just be careful on Waldeck, which is very narrow and technically one-way the other way, but I've never met a car on it.
I think Rialto and Welsh (and Canton) are the easiest DD hills. They're short and not stupendously steep. Rialto's very difficult to get practice runs on, due to traffic.
In my experience, avoiding cramps is all about not asking your muscles to do more work than they're accustomed to. That's hard to do, but the training rides sure help.
If you don't mind the fact that I'm long-winded as hell, more of my tips are in a "strategies" section at the end of my 2017 DD blogpost.
This year's route will be extra interesting, with Logan potentially unusable. I'm very curious to hear the plan.
2018-09-13 16:35:39