botanical garden - a facility where trees and shrubs are cultivated for exhibition. arboretum. facility, installation - a building or place that provides a particular service or is used for a particular industry; the assembly plant is an enormous facility.
Keystone, CO Weather. The average temperature of Keystone is 35.80Â°F, which is much lower than the Colorado average temperature of 46.26Â°F and is much lower than the national average temperature of 54.45Â°F. Historical Weather.
The total driving distance from Keystone, CO to DEN is 93 miles or 150 kilometers. Your trip begins in Keystone, Colorado. It ends at Denver International Airport in Denver, Colorado. If you are planning a road trip, you might also want to calculate the total driving time from Keystone, CO to DEN so you can see when you'll arrive at your destination. You can also calculate the cost of driving from Keystone, CO to DEN based on current local fuel prices and an estimate of your car's best gas mileage.