The Twin Cities Marathon is a very popular fall marathon choice and is annually one of the largest marathons in the U.S.
The course is a point-to-point course beginning near the Mall of America Field in downtown Minneapolis and finishing at the State Capitol in Saint Paul. The course route travels around four lakes and both sides of the Mississippi River. The course is mostly flat with some rolling hills along the way. However there are no significant climbs.
From the Race Organizers:
Welcome to the heart of the Minnesota River Valley, where you will experience amazing fall views, great people and the bold race you’ve been looking for. Mankato has no shortage of spectators to cheer you on, including cheer teams, aid stops and spectators. Mankato has definitely embraced this as a community event and pulled out all the stops! This race is known for the finish line in the heart of City Center Mankato.