lol jimmiller. I am just eye balling, so I could be off by about 20%. Though I would consider myself highly accurate when it comes to angles/math. I can say that when it snows, my car will not make it up the hill, and in NC it normally snows an inch or two at best. And while the road is extremely hilly, not all of this hills are equal. I would say they probably average closer to 25 to 30%. The one with the largest incline is the one right outside of my house and it is killer just running it. I have only been to the bike path once so I am probably slightly off on that number. A more reasonable number is probably 10 to 15% but I would have to go back and check it out. I live in youngsville, NC but I think most places throughout this area can see extreme hills. I will try and get the coordinates for a comparable area in NC