The Continental Divide Trail Is Not a Trail. Hike It Anyway.

The Continental Divide Trail is not a trail.

Three days ago this journal told the Appalachian Trail's story as a single unbroken footpath — blazed, measured, the same tread under every hiker's boots from Springer to Katahdin. The CDT makes that definition look quaint. What Congress designated in 1978 is closer to a 3,100-mile corridor along the crest of the Rockies, and the Continental Divide Trail Coalition counts only 69 percent of it as single-track. Roughly 165 miles still sit in unfinished gaps. The rest gets covered on dirt roads, paved shoulders, and a web of alternates that hikers argue about over green chile in Lordsburg.

The community shorthand for all of this runs three words: embrace the brutality. It covers the long water carries in New Mexico's bootheel, the June snowpack in the San Juans, and the strange pleasure of a walk where "which way did you go?" is a genuine question between two people who both went from Mexico to Canada.

• Official length: about 3,100 miles (CDTC figure — your actual total depends on your alternates)
• Single-track share: 69% — the rest is dirt road, pavement, and gap routes
• Miles still in major gaps: roughly 165
• States: New Mexico, Colorado, Wyoming, Idaho, Montana
• High point: Grays Peak, Colorado — 14,278 ft, the highest ground in the Triple Crown
• Termini: Crazy Cook Monument, NM to the Canadian border in Glacier National Park
• Typical thru-hike: 5 to 7 months
• Reported completions since 1972: 1,631 names on the coalition's roster

One line on the map, many lines on the ground

Start at Crazy Cook Monument, a small obelisk in the Chihuahuan Desert several bumpy hours from the nearest town. End at the Canadian border in Glacier National Park. In between, the corridor threads five states and tops out on the summit of Grays Peak at 14,278 feet.

The map below traces the full line — spin it. For long stretches the route walks the literal hydrological divide, and the glowing dot is doing something no other line in this series can claim: rain falling a step to its left drains toward the Pacific, a step to its right toward the Atlantic by way of the Gulf. It rides the crest through Colorado's San Juans, the highest sustained stretch of the whole route.

Then there are the choices. The best known is the Gila River alternate, which abandons the official New Mexico line for a canyon the divide never enters — hikers wade the river dozens of times and rejoin the route days later, and nobody hands back their completion for it. The coalition recognizes finishers on the honor system: a continuous journey between the borders along the divide, your line being yours to defend. The full official route, with elevation profile and every road crossing, lives on the Continental Divide Trail page on Outdoors.

How long does a CDT thru-hike take?

Five to seven months, the spread the coalition itself plans around — wider than the AT or PCT because the mileage itself is unfixed. Alternates can shave or add serious distance, and a snow reroute can rewrite a month of itinerary in an afternoon.

Most hikers budget six months and adjust. The trail has a way of auditing your plan.

When to start, and why snow decides twice

Northbounders leave Crazy Cook in late April or early May. Southbounders start at Glacier once the passes shed their snow, usually mid-June into early July.

Both windows are set by the same variable measured in two places. Go north too early and you hit the San Juans still buried; too late and Montana's October finds you first. Southbound flips the problem: Glacier decides when you may begin, and autumn New Mexico is the reward. Colorado is the crux either way. High on the La Garita crest, the corridor passes within a short detour of San Luis Peak, the most remote standard-list 14er in Colorado — thru-hikers wander up it as a side trip while peakbaggers drive half a day for the same summit.

Do you need a permit for the CDT?

There is no CDT permit. No lottery, no start-date quota — no single document covers the corridor end to end.

What you collect instead is a pocketful of local ones: a Blackfeet Nation recreation permit for the reservation miles near East Glacier, wilderness camping permits for Glacier National Park, backcountry permits for Yellowstone, and Rocky Mountain National Park plus Indian Peaks Wilderness if your Colorado line runs through them. The coalition keeps the current list on its thru-hiking page; check it the winter before you go, because the parks' reservation systems open early.

The rarest patch in the Triple Crown

The coalition's completer roster, going back to 1972, holds 1,631 names. Total. Ever.

For scale, the Appalachian Trail Conservancy logged its 20,000th reported completion back in 2018. On the divide, a strong recent year sees about 200 finishers report in — the roster shows 205 for 2023, its biggest year yet. The first entry belongs to Eric Ryback, dated 1972, six years before the trail legally existed. Report your finish and the coalition sends a certificate and a patch with a "3000 Miler" rocker: the quietest possible trophy for the hardest walking in the Triple Crown.

Nobody polices your line. That is the point the AT article couldn't have made — a trail can be a corridor, an argument, and a finished thing all at once, and the people wearing that rocker mostly agree the arguing was the best part.

After the divide

If the corridor idea appeals but the commitment doesn't, the two obvious next reads are the Pacific Crest Trail, where the route is fixed but your start date is rationed, and the Appalachian Trail, the single-tread original this article has spent a thousand words arguing with. This series keeps going — one long trail a day, fourteen in all — so the next one is already on its way.

Outdoors maps the whole corridor, plus the trails you can actually hike this weekend — start with what's near you and work up to the divide.

Hero photograph: Looking north on the Continental Divide Trail in the Weminuche Wilderness by Charlie DeTar, licensed under CC BY-SA 3.0.

Sources

• cdtcoalition.org
• cdtcoalition.org
• cdtcoalition.org
• cdtcoalition.org
• journeys.appalachiantrail.org
• en.wikipedia.org
• thetrek.co
• www.outdoorlife.com
• theoutdoorsapp.com
• commons.wikimedia.org

Hero photograph: Looking north on the Continental Divide Trail in the Weminuche Wilderness, Colorado — between the Palisade Meadows cutoff and the Knife Edge. by Charlie DeTar, licensed under CC BY-SA 3.0.