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Legal Marijuana Tourist Tips for Colorado Weed Tours

Age Limit: Adults 21 and older can possess up to one ounce of marijuana and purchase marijuana at retail marijuana stores. It is illegal to provide marijuana to or consume marijuana with anyone under 21.

Stores: Adults with a valid form of photo ID can purchase marijuana and marijuana- infused products. Many retail marijuana stores only accept cash.

Purchase Limits: Colorado residents can purchase up to one ounce of marijuana at retail marijuana stores. Non-residents can purchase up to a quarter ounce.

No Resale: Adults can give away up to one ounce of marijuana to other adults 21 and older. It is illegal to sell marijuana without an official business license.

Public Use: It is illegal to consume marijuana openly and publicly.

Driving: It is illegal to drive under the influence of marijuana and doing so will result in significant legal penalties.

Travel: It is illegal to take marijuana outside of Colorado and doing so will result in significant legal penalties.

Don’t drive High: Book a 420 Bus Tour

Weed Edibles

Read the labels, go slow, and don’t hesitate to ask questions. Legal marijuana edibles are often made with concentrated cannabis oil, meaning they may be much stronger than edibles you have tried in the past. Depending on your body type, edibles can take up to two hours to fully take effect. Be careful; start with a single 10 mg serving or less, and don’t take more until you wait a full two hours. Most importantly, keep edibles far away from children and pets.


Marijuana concentrates come in a number of varieties: oils, hashes, waxes, kief, and amber glass. If marijuana was compared to a light beer, then concentrates would be a stiff whiskey drink. They are strong and have a quick effect, so begin with a small amount.

Vaporizer Pens

Vaporizer pens are relatively new to the legal marijuana market and work similarly to electronic cigarettes. Be careful and go slow when using them because they often use concentrated cannabis oils.

Where to Consume

Private vs. Public: The Colorado constitution protects private marijuana use, so you can consume openly at a residence or outdoors on a porch or balcony as long as the property owner allows it. Marijuana cannot be consumed openly and publicly, such as on streets and sidewalks, or in public parks. Localities may have their own regulations on where you can consume, so you should check local laws first. For more information about the laws in Denver, visit


It is legal to consume marijuana in a private hotel room if the establishment permits it and you are either vaporizing or staying in a room in which smoking is allowed. As with tobacco, marijuana in any indoor location is subject to the restrictions in the Colorado Clean Indoor Air Act.

Ski Resorts

Please ski safely and remember that open and public consumption is prohibited. A number of ski resorts are located on public and federal lands where it is illegal to consume marijuana. Resorts may have their own marijuana consumption policies and violating them could result in fines or revocation of your ski pass.

Driving & DUI

Driving under the influence of marijuana is illegal in Colorado and carries serious penalties. Similar to the 0.08 blood-alcohol limit, it is illegal to drive with 5 ng/mL of THC or more in your blood. This test is performed at a police station and does not entail a breathalyzer or urine test. Most consumers’ THC levels dissipate about one to two hours after smoking or vaporizing, but it can vary based on body type, so wait at least three hours before driving a vehicle. Edible marijuana products can remain in your system much longer, so do not operate a vehicle for the rest of the day after consuming any amount of edibles. If you are not sure whether you are impaired or above the legal limit, do not drive!