Grand Valley 1/2 Marathon ~ 5K & 10K ~ Saturday, May 9, 2020

“If you like small town races with minimal hassle that are well organized with a scenic course this is the one for you. The course has a few small rolling hills but very minor compared to most races in CO. There are amazing views of mesas and the CO river. The course winds through CO wine country. I ran on the shoulder of the road and ocassionaly on the white line. I recommend running in your roads shoes without any supplies as the aid stations are well stocked and numerous (every 2 miles).”

Race Info: The Grand Valley Marathon, 1/2 Marathon, 10K and 5K are made possible by Mammoth Marathons. We are a Non-Profit Organization made up of three race directors and many volunteers.
These races were designed to  encourage the whole family to come and participate in a great day of activity, regardless of their interest or running ability.
More information and registration can be found at: