Denver to Aspen: Independence Pass and Winter Routes
Quick answer
Independence Pass closes every year from around early November until late May, which removes the shortest route from Denver to Aspen for the entire ski season. The winter route runs I-70 west to Glenwood Springs, then south on Highway 82, covering roughly 220 miles in 3.5 to 4.5 hours. Even when the pass is open in summer, the Glenwood route is often faster because Independence Pass is narrow, winding and limited to vehicles under 35 feet.
Aspen is the longest transfer we run, and the route changes completely depending on the month. Here is what that means in practice.
When does Independence Pass close?
Around early November, and it reopens in late May. CDOT sets the exact dates each year based on snowfall, and the pass stays gated through the whole winter.
At 12,095 feet the summit is the highest paved pass in Colorado carrying through traffic. Keeping it open through winter is not practical, so it simply shuts.
The two routes compared
| Route | Distance | Time | Available |
|---|---|---|---|
| Via Glenwood Springs | ~220 miles | 3.5 to 4.5 hrs | Year round |
| Via Independence Pass | ~160 miles | 4 hrs or more | Late May to early November |
The shorter route is not the faster one. Independence Pass has tight switchbacks, single-lane sections and a 35-foot vehicle length limit, so the extra 60 miles through Glenwood usually costs nothing in time.
What the winter route actually involves
I-70 west from Denver through the Eisenhower Tunnel and over Vail Pass, then past Glenwood Springs and south on Highway 82 through Carbondale and Basalt into Aspen.
That means the journey includes both of I-70’s winter pinch points before it even turns south. Consequently, weekend timing matters as much on this route as on any other, and a Sunday afternoon departure can add well over an hour.
Four hours, handled by someone who has done it before
Private shuttle from Denver and DIA. Vans for up to 14. Flat rate, no shared stops.
Should you fly into Aspen instead?
If a direct flight exists and the fare works, yes. Aspen/Pitkin County Airport sits four miles from town, roughly ten minutes.
However, Aspen diverts more often than any other Colorado mountain airport. The approach is demanding and low cloud regularly sends flights to Denver or Grand Junction, at which point you face the drive anyway with less notice. Plenty of visitors book the Denver route deliberately for that reason.
Frequently asked questions
How long is the drive from Denver to Aspen in winter?
Roughly 3.5 to 4.5 hours over about 220 miles via Glenwood Springs. Weekend traffic and snow can add an hour or more.
Can you drive Independence Pass in December?
No. The pass is gated and closed from roughly early November to late May every year.
Do you run shuttles back from Aspen?
Yes, and it is worth booking both legs together. Aspen to Denver airport is the same journey in reverse and availability tightens at the end of peak weeks.
Heading to Aspen? Call (720) 277-1843 or book online. See our Aspen transportation page.