Definition of Solo. so·lo: (adjective & adverb) For or done by one person alone; unaccompanied.

Solo Run is a movement to honor everyone who runs individually on their own to let them know that they are not alone. Everyone is free to run solo anywhere around the world, at any time at their own pace without any distractions, prejudices or excuses.

To all solo runners, join us and run on your own together, but remember you are never alone.