Just an FYI of a race that's in my top 5 list of Marathons, Marine Corps Marathon which takes place on October 26th in the Virginia/Washington DC area. This year marks the 50th anniversary and registration just opened up today. The race is very well organized, supported and has a nice expo. There is an elevation map on the website but its not anything crazy. I would say I was caught off guard my first time because there is a good incline as you approach the finish. Another gottcha is called beating "the gauntlet " which is basically making it to 3 checkpoints by a certain time which is when the streets reopen.. I believe if you are able to run at least a 14min pace you wont have any issues. https://www.marinemarathon.com/