Independence Pass is the short way into Aspen from the east, and it is one of the best drives in Colorado. It is also closed roughly half the year, and even when it is open it is not always the right call. If you are planning a trip and looking at a map wondering why the route seems to swing so far north, this is the answer.
The basic facts
Independence Pass carries Colorado Highway 82 over the Continental Divide at 12,095 feet. It is the highest paved through-road in Colorado and one of the highest in the United States. The summit sits about 20 miles east of Aspen and 20 miles west of Twin Lakes, and the road connects Aspen directly to US-24 and the Leadville side of the mountains.
Going over the top rather than around cuts real distance off a trip from Denver — something like 40 miles and, in good summer conditions, the better part of an hour. That is why people ask about it.
When it is open
CDOT closes Independence Pass every winter and reopens it in late spring. The dates move with the snowpack, but the pattern holds year to year:
- Closes: typically the first week of November, sometimes earlier if a big storm arrives. Once it closes, it stays closed — there is no reopening it between storms.
- Reopens: usually around the Thursday before Memorial Day, though a heavy winter can push it into early June.
- Open season: roughly late May through early November. Call it five and a half months.
The closure is not a maintenance decision, it is a practical one. The road above treeline drifts shut, the avalanche paths above it are active, and there is nowhere to push the snow. CDOT does not plow it in winter at all.
Always check cotrip.org before you count on it, in either direction. A late September snowfall can close the pass for a few days in the middle of what is nominally the open season, and that catches people out more often than the winter closure does.
What the drive is actually like
From the Aspen side the road climbs steadily out of town past the Grottos and the old townsite of Independence, and then the last few miles above treeline are genuinely spectacular: the valley falling away, the Roaring Fork headwaters, and a summit parking area with a short boardwalk out to a viewpoint.
It is also narrow. There is a stretch on the west side, above the Grottos, where the pavement narrows to a single lane cut into rock with a drop on one side and no guardrail. Two vehicles cannot pass there, so one yields. It is short and it is manageable, and it is also the reason for the next section.
The vehicle restriction people miss
Vehicles over 35 feet are prohibited on Independence Pass. That rules out motorcoaches and RVs entirely, and it is enforced.
Our 14-passenger Mercedes Sprinters are under that limit and legal on the pass. Whether we take them over it is a separate question. A full Sprinter with luggage on a narrow section with a following vehicle is a job you would rather do in clear weather with good visibility, and our drivers make that judgment on the day. A luxury SUV with four passengers is a much easier vehicle for the pass, and if a client specifically wants the drive, that is what we will usually put them in.
So when do we actually use it?
Honestly: less often than you might think, and always as a deliberate choice rather than a default.
We route over the pass when the client wants the drive and has said so, the weather is settled, the vehicle suits it, and the schedule has room. It is a wonderful way to arrive in Aspen for the first time and we are glad to do it.
We route around through Glenwood Canyon when there is any weather in the forecast, the group is large or heavily loaded, there is a flight or an event at the other end that cannot slip, or it is dark. I-70 is a divided interstate that gets plowed first and stays open in almost all conditions. It is longer in miles and more reliable in practice, and for airport work reliability wins every time.
That is the rule we work to: the pass is a feature of the trip, not a shortcut to be taken for granted. If getting there on time is the point, we take the interstate.
Independence Pass and your flight
This is where the decision gets concrete. If you are coming from Denver International, the route around through Glenwood Canyon takes about four hours door to door. Over the pass, in ideal summer conditions, you might save close to an hour.
But the pass has no alternative if something goes wrong on it. A stopped vehicle on a single-lane section holds up everyone behind it, and there is no detour — you wait. On I-70 a closure is painful but there are exits, frontage roads and options. For a departure where you have a flight to catch, we do not use the pass. In winter the routing decision is a legal one too — see how Colorado’s traction law works. For a relaxed arrival on a clear July afternoon with no hard deadline, it is a different conversation and a much better drive.
Our Denver Airport to Aspen page covers the full route comparison and the timings we work to in each season, and the Aspen to Denver page covers the return leg, where the pass is almost never the right call.
Stops worth building in
If you are taking the pass because you want to see it, it is worth adding half an hour to the schedule rather than driving past everything:
- The summit — parking area, interpretive signs, and a short accessible boardwalk to a viewpoint above 12,000 feet. Even in August it is cold and windy up there, so bring a layer.
- The Grottos — ice caves and cascades in the rock beside the Roaring Fork, a short walk from a pull-off on the Aspen side.
- Independence townsite — the remains of an 1880s mining camp just below the summit on the west side.
- Twin Lakes — on the east side, and a good place to stop if you are heading toward Leadville or Buena Vista.
Altitude is worth a word here. The summit is over 12,000 feet, and if you flew in from sea level that morning you will feel it. Drink water, walk slowly, and do not be surprised by a headache.
Frequently asked questions
Is Independence Pass open right now?
Check cotrip.org for live status. As a rule of thumb it is open from late May to early November and closed the rest of the year, but a storm can shut it inside the open season with no notice.
Can you drive a Sprinter van over Independence Pass?
Yes — our 14-passenger Sprinters are under the 35-foot limit and legal on it. Whether we do depends on the weather, the load and the schedule. Vehicles over 35 feet, including motorcoaches and large RVs, are prohibited.
Does taking the pass cost less?
No. We quote the trip, not the route. The routing decision is about conditions and timing, not price.
How much time does it save?
In ideal summer conditions, close to an hour from Denver. In anything less than ideal, nothing — because we would not use it.
Is it frightening to drive?
For a passenger, no. It is high and exposed and the views are dramatic, but the road is paved and maintained and our drivers run it regularly. If you are nervous about heights, sit on the inside and tell your driver — he will take the narrow section without conversation.
Can we go over the pass on the way in and back through Glenwood on the way out?
Yes, and that is a good plan. You get the drive on the relaxed leg and the reliable interstate on the leg with a flight attached. Tell us when you book so we build the time in.
Planning a trip over the pass
If you want the Independence Pass drive as part of your arrival, say so when you book rather than on the day — it changes the vehicle we assign and the time we allow. We will tell you honestly whether the conditions and your schedule support it, and if they do not, we will say so rather than take the risk with your trip.
We run Aspen and Snowmass year round, from all three airports that serve the valley. Call or text (720) 967-9956 and you will reach a person who has driven the pass more times than he can count.
Independence Pass closes from early November to late May, which changes airport timing for anyone in Aspen. How early to leave Aspen for a flight gives the summer and winter departure tables for DEN, EGE and ASE.
When Independence Pass is closed, everything routes through Glenwood Springs instead. That leg is covered on our Glenwood Springs to Aspen page.