Metropolitan and Micropolitan areas near Comet Trail, Grundy County, Iowa Comet Trail Main Page HIGH QUALITY TOPO MAP, CLICK HERE More Information about Comet Trail, Grundy County, Iowa Nearest metro area is Marshalltown, Iowa Click here for more outdoors activities near Marshalltown, Iowa General Camping Information List of nearby metros and micros: Marshalltown, Iowa, 18.3 miles away Waterloo-Cedar Falls, Iowa, 31.6 miles away Newton, Iowa, 34.4 miles away Oskaloosa, Iowa, 47.3 miles away Ames, Iowa, 50.8 miles away Mason City, Iowa, 57.8 miles away Ottumwa, Iowa, 64.7 miles away Des Moines, Iowa, 72.2 miles away Austin, Minnesota, 73.8 miles away Boone, Iowa, 79.2 miles away * Distances listed are direct linear distances, actual travel distance may be different. Go to Iowa Outdoors Index