HomeThe Guild Travel LibraryUnited StatesColorado

The official flag of Colorado, a U.S. state

Colorado

Curated by Our Guild Explorers · Updated August 2026

The Centennial State · Capital: Denver · The West

The Rocky Mountains at their most spectacular — skiing, peaks and mile-high cities.

Welcome to Colorado, where fifty-eight peaks top fourteen thousand feet — locals just call them the 'fourteeners.'
Come for the snow, stay for the green chile, and drink plenty of water at that altitude.

Why go

What makes Colorado worth the trip.

World-class skiing

Aspen, Vail and Breckenridge are marquee winter resorts.

Rocky Mountain grandeur

Fourteen-thousand-foot peaks and alpine national parks.

Four-season play

Skiing in winter, hiking and rafting all summer.

Colorado on the map

The capital and the places worth building a trip around. Click a marker for a quick note and hotels.

★ Denver is the capital. Markers show the signature stops covered below. Map data © OpenStreetMap contributors.

Colorado — State Facts

AbbreviationCO
CapitalDenver
Largest cityDenver
Population5,773,714 (2020)
Area104,094 sq mi
StatehoodAugust 1, 1876 (38th state)
RegionThe West
Time zoneMountain (MST)
Highest pointMount Elbert (14,440 ft)
Borders: Wyoming, Nebraska, Kansas, Oklahoma, New Mexico, Arizona, Utah. State symbols: Bird Lark bunting; Flower Rocky Mountain columbine; Tree Colorado blue spruce. Motto: Nil Sine Numine (Nothing Without Providence). Nickname: The Centennial State.
Facts: U.S. Census Bureau (2020) and state references. Figures may change — confirm current data before citing.

A short history

Colorado's high country was long home to the Ute, along with Arapaho and Cheyenne peoples on the eastern plains, whose seasonal hunting grounds spanned the Rockies for thousands of years before European contact. Spanish explorers passed through in the 1700s, and the region was folded into the Louisiana Purchase and later Mexican Cession before the 1858-59 Pike's Peak Gold Rush drew a flood of prospectors and permanent settlers.

Colorado became a U.S. territory in 1861 and entered the Union in 1876, earning the nickname 'the Centennial State' for joining a hundred years after the Declaration of Independence. Mining fortunes built boomtowns like Leadville and Cripple Creek, and the arrival of the railroads cemented Denver as the region's commercial hub, a role it still plays today.

Modern Colorado blends a resource and ranching economy with tech, aerospace and craft brewing, anchored by Denver's skyline and a legalized cannabis industry that made headlines from 2014. Its defining landmarks remain natural: Rocky Mountain National Park's alpine tundra, the ski towns of Aspen and Vail, and Mesa Verde's Ancestral Puebloan cliff dwellings, a UNESCO World Heritage Site.

Bodhi

Denver earned its Mile High City nickname because the thirteenth step of the state capitol building sits exactly 5,280 feet above sea level, and Mesa Verde further south preserves cliff dwellings the Ancestral Puebloans built and occupied roughly 700 years ago.

Where to go

The signature places to build a trip around.

LuxuryFull ServiceLimited ServiceFamilyAffordable
Ancient cliff dwellings

Mesa Verde

Ancient cliff dwellings in the state's southwest corner.

Selected hotels

Nolie

Drive Trail Ridge Road in Rocky Mountain National Park at sunrise in summer — the elk are still grazing the alpine tundra, the light on the peaks is unreal, and the road usually stays open only from late May through October, so check before you go.

When to go

December–March for skiing; June–September for hiking and mountain drives.

Winter (Dec–Feb)

Peak ski season with reliable powder in Aspen, Vail and Breckenridge; Denver stays sunny but cold.

Spring (Mar–May)

Late snow can still deliver good skiing while lower valleys green up; a mixed, changeable season. Spring break means late-season skiing at Breckenridge, Vail and Aspen.

Summer (Jun–Aug)

Warm, dry days made for hiking, rafting and mountain drives; afternoon thunderstorms are common.

Autumn (Sep–Nov)

Golden aspens and crisp air make September a favourite for mountain scenery before the snow returns.

Colorado FAQ

What is the capital of Colorado?

Denver is the capital of Colorado.

What is the largest city in Colorado?

Denver is both the capital and the largest city in Colorado.

When did Colorado become a state?

Colorado became the 38th U.S. state on August 1, 1876.

What is Colorado known for?

Colorado is known for the Rocky Mountains at their most spectacular — skiing, peaks and mile-high cities.

When is the best time to visit Colorado?

December–March for skiing; June–September for hiking and mountain drives.

Plan your Colorado trip

Browse hotels and flights through the Guild's travel partner, and explore more of the United States.

All of the USA The Travel Library
🌍 Destinations Guild · An affiliate of Trip.com Guide content is curated by the Destinations Guild. Details such as prices, opening hours, and entry rules change — always confirm with official sources before you travel. Home · Library · United States · Get Involved