Slim,
Here is a link to a 70 mile Strava file from last year.
https://www.strava.com/activities/547434383About the same amount of total climbing, but there are some actual hills on the 70, whereas the 100 is generally much more gradual. The hills are pretty much all between 35 and 50. As I recall a lot of them are actually paved, but I could be misremembering. Nothing huge, but you'll definitely know you are going up a hill. Unless you are running some crazy high geared single speed there is nothing you would be in any danger of not being able to ride up.
A very brief course description.
0-17 - 95% pavement. Gorgeous along the St. Croix river.
17-24 - SAND. Lots and lots of sand. Don't ride your 25mm tires. 40mm and still swerve all over and potentially hike a bike a few stretches. They don't call them the sand barrens for nothing.
24-49 - The section I've ridden the least for sure. I think a fair bit of it is paved. A bit rolly.
49 - Stop at Cafe Wren for some goodies. Love that place.
49-end - Mostly flat rolling along the Gandy Dancer. It was pretty firm yesterday. A few ruts from a few vehicles and actually quite a bit from bikes to just keep an eye on. Once past Centuria its pretty much all down hill back to SCF.
It is a beautiful and challenging course despite the lack of elevation gain.
