A summer road trip through Durango and Southwest Colorado

Durango is a practical hub for a summer road trip in Southwest Colorado. From town you can ride a historic railroad into the San Juan Mountains, walk a riverside path, and use U.S. highways to reach Silverton, the Alpine Loop country, and other high-country towns. The most reliable plans start with official railroad, forest, and road-condition pages, because summer timetables, monsoon weather, and mountain passes all change.

The signature outing is the Durango & Silverton Narrow Gauge Railroad. On its official route page, the railroad says the line travels 45.4 miles each way along the Animas River from Durango to Silverton during the summer season, May through October. In winter, late November through early May, trains travel 26 miles each way to the wye at Cascade Station. The last point of highway access between Durango and Silverton is Rockwood Station. Between Rockwood and Silverton, the railroad says, the corridor is designated wilderness and there is no motorized access.

That wilderness designation is part of why the train feels like a different kind of road trip. You are not paralleling a highway for the whole distance. The railroad describes the Animas as one of the last free-flowing rivers in the western United States and says the train crosses the river five times on the way to Silverton. It also notes that river flows change with the season, rising from around 400 cubic feet per second in April to more than 6,000 at peak snowmelt in June, then easing again in September. Those figures are the railroad’s published ranges, not a forecast for the week you travel.

Do not treat a general “May through October” description as a ticket. Departure times, equipment, and the exact first and last Silverton dates can change from year to year. The railroad’s official excursion and reservations pages are the place to confirm trip length, layover time in Silverton, and whether a particular date is operating. If you need a specific 2026 timetable, read it there rather than from a secondary write-up.

Elevation is a planning fact, not a footnote. The railroad lists Durango at 6,512 feet above sea level and says the train climbs nearly 3,000 feet toward Silverton, with high-mountain air on average about 10 degrees cooler than in Durango. Official pages give slightly different figures for Silverton’s elevation, so this guide does not pick a single number; it is enough to know the town sits just above 9,300 feet. The railroad encourages guests to rest, drink water, and, when possible, arrive a day early to acclimate, and to talk with a physician if they have health concerns.

Silverton itself is worth the layover or an overnight if your itinerary allows it. The railroad describes a mining town in a mountain valley, with downtown along Greene and Blair Streets designated as a National Historic District, and it points visitors to local museums and seasonal attractions. It also mentions the Alpine Loop, a four-wheel-drive route connecting Silverton, Lake City, and Ouray through former mining country, including Animas Forks. That is not a casual sedan outing. If you consider it, use current road reports, respect closures, and understand that weather can change quickly above treeline.

Back in Durango, summer days often revolve around the river corridor and town. Visit Durango and local trail information describe a paved multi-use Animas River Trail through town; confirm current maps, access points, and any closures on official local pages before you ride or run it. Commercial rafting and other guided trips operate on nearby rivers in season, but water levels, permits, and outfitter schedules belong on those operators’ and land managers’ sites, not in a guessed itinerary.

The San Juan National Forest and the Weminuche Wilderness sit just beyond town. The railroad’s route page is a reminder that some of that wilderness is easier to reach by rail than by car. Hikers who use train flag stops or remote access should read the railroad’s wilderness-access information and U.S. Forest Service regulations before they go, including any requirements around permits, camping, food storage, and trail conditions. A summer road trip can include a forest hike or a high-country lake, but it should not begin with an unofficial route description.

Visit Durango, the official destination site, is the best starting point for current local trail maps, river recreation, and event calendars. This guide does not invent festival dates or a mileage figure for the Animas River Trail, because those details belong on official pages and can change. If you want a downtown walking day in addition to the train, confirm access points and any closures there before you go.

Driving between these towns is part of the trip. Mountain highways in this corner of Colorado can be slow, scenic, and occasionally closed or restricted. The railroad itself points drivers to COTrip.org and to CDOT phone lines for current road conditions, and it notes that rain or snow is possible any time of year. A conservative summer plan builds daylight into transfers between Durango, Silverton, Ouray, and other stops, and it treats jeep roads as a separate decision from paved highways.

If you are assembling a few days, a solid structure is Durango as the sleep-and-supply base, a reserved train day or two with time in Silverton, and only then a scenic drive if roads are open. Check the official railroad timetable before you lock the rest of the trip. Check forest and wilderness notices if you plan to hike. Check COTrip if you plan to drive high passes. Southwest Colorado is generous in summer, but the official pages are still the difference between a smooth road trip and a day spent waiting at a closed gate.