What should I know before visiting Denver?

Direct answer

Denver is a high-altitude, outdoor-oriented city with a vibrant food, craft-beer and arts scene. Know the altitude, weather variability, transit options, and local norms to enjoy a safe, smooth visit.

Visa / Entry requirements

• U.S. entry: International visitors must meet U.S. visa/ESTA requirements. Check the U.S. State Department or embassy for your country.
• Passport: Valid passport required; many nationalities need a visa or ESTA approval in advance.
• COVID: Verify current U.S. COVID-related entry rules before travel (policies can change).

Best time to visit

• Late spring (May–June) and early fall (Sept–Oct): Mild weather, fewer crowds, great for hiking and sightseeing.
• Summer (June–Aug): Warm days, popular for outdoor activities; expect higher hotel rates and occasional afternoon storms.
• Winter (Nov–Mar): Ski season nearby—Denver is a gateway to ski resorts. Expect cold, snow, and potential travel disruptions.

Safety tips

• Altitude: Denver is ~5,280 ft (the "Mile High City"). Allow 24–48 hours to acclimate. Stay hydrated, avoid heavy exertion the first day, limit alcohol, and know symptoms of altitude sickness (headache, nausea, dizziness).
• Weather: Rapid changes are common—carry layers and check forecasts. Afternoon thunderstorms in summer can be severe.
• Crime: Like any city, use common-sense precautions: avoid poorly lit areas at night, secure belongings, and be aware of property crime hotspots. Downtown and tourist areas are generally safe but stay alert.
• Traffic & driving: Roads near mountains can be icy in winter; watch for cyclists and pay attention to traction laws.

Local customs & etiquette

• Friendly, casual: Denverites are generally informal; tipping culture is standard (15–20% in restaurants, higher for good service).
• Outdoor culture: Respect trails and wilderness rules—stay on trails, pack out trash, and be bear/elk aware in mountain areas.
• Cannabis: Recreational marijuana is legal for adults 21+, but public consumption is illegal. Keep product in private spaces and follow possession limits.

Currency & payments

• Currency: U.S. Dollar (USD).
• Cards & cash: Credit/debit cards widely accepted. Carry some cash for small vendors, tips, or farmers markets.
• ATMs: Readily available; use bank ATMs to minimize fees.

Transportation

• Airport: Denver International Airport (DEN) is ~25 miles from downtown. The RTD A Line commuter rail connects DEN to Union Station (~37 minutes).
• Public transit: RTD buses, light rail, and the free MallRide shuttle downtown. Purchase passes via RTD app, kiosks, or tap-to-pay on some services.
• Ride-shares & taxis: Widely available. Ride-share pickup/drop zones are designated at the airport.
• Driving: Renting a car is useful for mountain trips. Expect traffic during rush hours (7–9 AM, 4–6 PM). Parking in downtown can be metered or in garages—check signs.
• Biking & scooters: Popular for short trips; obey traffic laws and wear helmets. Bike lanes exist but always be cautious.

Must-know tips & local insights

• Altitude-friendly food & drink: Drink water, avoid excessive alcohol/salt first day, and consider lighter meals until acclimated.
• Outdoor day trips: Rocky Mountain National Park, Red Rocks Amphitheatre, Boulder, Golden, and Mount Evans are close and popular—start early to beat crowds.
• Cultural picks: Denver Art Museum, Clyfford Still, Denver Botanic Gardens, and the historic Larimer Square. Check local event calendars for concerts and festivals.
• Food & drink scene: Strong craft-beer culture; try local breweries and farm-to-table restaurants. Brunch and green-chili dishes are local favorites.
• Time zone: Mountain Time (MT). Adjust plans if connecting to other U.S. time zones.
• Emergency numbers: 911 for emergencies. Non-emergency Denver Police: check local listing for current number.

Packing checklist (quick)

• Layers, sun protection, reusable water bottle, comfortable walking shoes, light rain jacket, altitude remedies (if needed), photo ID, backup charger, and copies of travel documents.

Final practical advice

Take it easy your first day to adjust to altitude, plan outdoor activities earlier in the day (weather gets volatile in afternoons), and use Denver as a base for mountain adventures while enjoying its dining, arts, and brewery scenes.