Border Fortification Efforts Lead to Significant Restrictions on America’s Iconic Long Trails

Since the beginning of the United States’ push to fortify its borders, at least three popular long trails have seen restrictions or closures at their termini, fundamentally altering the experience for thousands of thru-hikers and raising questions about public land access. The latest development, announced on April 13, 2026, concerns the Arizona Trail (AZT), where the Department of Homeland Security (DHS) has closed the southernmost mile due to ongoing border wall construction. This closure effectively shortens the AZT by a critical mile and follows the earlier fencing off of Monument 102, the trail’s traditional southern terminus, with razor wire in late October or early November of the previous year. The Arizona Trail Association (ATA) has indicated its intention to establish a new terminus on nearby Coronado Peak, but for now, hikers must commence or conclude their journeys at a trail junction nearly 2,000 yards from the international boundary.

This recent restriction on the AZT is not an isolated incident but rather the latest in a series of measures impacting major American long trails. While the total mileage directly affected by these closures across all trails—approximately two miles out of a combined 6,500 miles, plus a crucial international crossing point—might seem negligible on paper, their symbolic and practical implications for the thru-hiking community are profound. The termini of these trails are revered spaces where epic adventures begin and monumental achievements are celebrated, embodying the spirit of uninterrupted wilderness travel. The erosion of access to these points represents a significant shift in the relationship between public lands and national security priorities.

The Broader Context: A Push for Border Fortification

The intensified focus on securing the U.S. borders, particularly the southern boundary with Mexico, gained significant momentum in recent years. Policies enacted under various administrations, notably the Secure Fence Act of 2006 and the accelerated construction efforts that began in 2017, aimed to curb illegal immigration and drug trafficking through the construction of physical barriers, enhanced surveillance, and increased law enforcement presence. This push has seen billions of dollars allocated to erecting fences, walls, and other infrastructure, often traversing remote and ecologically sensitive landscapes. The Arizona-Mexico border, in particular, has been a focal point of these efforts due to its challenging terrain and historical routes for cross-border movement.

The implementation of these policies frequently involves federal agencies such as the Department of Homeland Security (DHS), U.S. Customs and Border Protection (CBP), and the Department of Defense. These agencies operate under mandates to protect national security, often granting them considerable authority over land use in border zones, even on public lands managed by other entities like the National Park Service or the U.S. Forest Service. It is this intersection of national security imperatives and recreational access that has created the current predicament for long-distance trails, many of which were deliberately designed to span the continent, often beginning or ending at an international border.

A Chronology of Restrictions and Adjustments

The past two years have witnessed a cascade of access changes impacting some of America’s most cherished long trails:

• January 2025: Pacific Crest Trail (PCT) Northern Terminus: The Canada Border Services Agency (CBSA) announced it would cease issuing permits for PCT hikers to cross into Waterton Lakes Provincial Park at the trail’s northern terminus. This decision effectively closed a traditional crossing point, forcing southbound hikers to backtrack approximately 32 miles to Hart’s Pass or seek alternative, often more complex, exit routes. The CBSA cited long-standing U.S. prohibitions on northbound hikers entering Canada at the terminus without specific authorization as a factor, alongside broader tensions over border enforcement between the two nations, including discussions around tariffs on Canadian goods.
• February 2026: Pacific Crest Trail (PCT) Southern Terminus: Initially, the federal government prohibited PCT hikers from traveling south of the official southern terminus, preventing the traditional ritual of touching the border barrier at the start or end of a hike. This sparked immediate public outcry from hikers and advocacy groups.
• March 2026: Pacific Crest Trail (PCT) Southern Terminus Reversal: Following intense public pressure and advocacy from organizations like the Pacific Crest Trail Association (PCTA), officials reversed the policy. Hikers can now once again walk the final hundred feet to the border barrier, provided they only cross the fenceline at a designated opening and do not travel along the wall. This partial reversal offered some relief but underscored the fragility of access.
• September 30, 2026: Continental Divide Trail (CDT) Southern Terminus: The Continental Divide Trail Coalition (CDTC) announced new restrictions for accessing the southernmost 1.1 miles of the CDT, located within the newly established New Mexico National Defense Area. Hikers now require an advance permit from the U.S. Army and must undergo a background check. While initial restrictions suggested non-U.S. citizens would be ineligible, the policy was later clarified to allow them to apply, provided they are accompanied by a permitted escort at all times.
• Late October/Early November 2026: Arizona Trail (AZT) Southern Terminus: Monument 102, the historic obelisk marking the AZT’s southern end, was fenced off with razor wire by DHS, blocking direct access for hikers.
• April 13, 2027: Arizona Trail (AZT) Southernmost Mile Closure: DHS formally closed the southernmost mile of the AZT, beginning at its junction with Joe’s Canyon, citing ongoing border wall construction. This closure is indefinite, with the Arizona Trail Association expecting it to last at least through the end of 2027.

Detailed Impact on Each Trail

Arizona Trail (AZT)

The Arizona Trail, a continuous 800-mile footpath stretching from the Mexico border to the Utah border, is celebrated for its diverse landscapes, traversing deserts, mountains, and canyons. Its southern terminus at Monument 102 has long been a poignant starting point for northbound thru-hikers, symbolizing the beginning of an arduous yet rewarding journey across the state. The unexpected closure of this monument in late 2026, discovered by a trail steward, sent ripples of concern through the AZT community. Matthew Nelson, Executive Director of the Arizona Trail Association (ATA), expressed to Backpacker his belief that access to the monument would not be regained, indicating the permanence of the new barrier.

The subsequent closure of the southernmost mile of the AZT, effective April 13, 2027, further compounds the issue. Hikers are now explicitly cautioned against proceeding south of the Joe’s Canyon junction. This means that for the foreseeable future, the "true" southern start of the AZT is effectively truncated, forcing a detour or a significantly altered beginning to the thru-hike. The ATA’s proactive search for a new, permanent terminus on Coronado Peak reflects the gravity of the situation and the understanding that these changes are unlikely to be temporary. The indefinite nature of the closure, with expectations extending at least through 2027, means multiple seasons of hikers will experience a different, shortened, or rerouted beginning to their AZT adventure. This disrupts long-standing traditions and necessitates significant logistical adjustments for hikers planning their trips.

Continental Divide Trail (CDT)

The Continental Divide Trail, an approximately 3,100-mile National Scenic Trail, spans from the U.S.-Mexico border in New Mexico to the U.S.-Canada border in Montana, traversing the backbone of the Rocky Mountains. Its southern terminus in the remote and rugged Bootheel region of New Mexico is a vital point for hikers embarking on or completing this monumental trek. Unlike the AZT, the CDT’s southern terminus remains physically accessible, but access now comes with a significant bureaucratic hurdle.

Since September 30, 2026, hikers wishing to traverse the southernmost 1.1 miles of the CDT within the New Mexico National Defense Area must apply in advance for a permit from the U.S. Army and undergo a background check. This measure, implemented to enhance security in a sensitive border region, introduces an unprecedented layer of complexity for hikers. The initial ambiguity regarding eligibility for non-U.S. citizens, later clarified to allow them permits with a mandatory escort, highlights the challenges of balancing national security with the public’s right to access federally designated recreational trails. The requirement for a permit and background check, a departure from the typical open access model of long trails, can deter spontaneous trips and adds a planning burden, particularly for international hikers who may face additional scrutiny and logistical challenges in securing an escort. The CDTC, while acknowledging the need for security, has actively worked to mitigate the impact on hikers, providing guidance and advocating for streamlined processes.

Pacific Crest Trail (PCT)

The Pacific Crest Trail, stretching approximately 2,650 miles from the U.S.-Mexico border in California to the U.S.-Canada border in Washington, is arguably the most famous long-distance trail in the United States. Its termini are iconic landmarks for hikers around the world. The PCT has experienced challenges at both its northern and southern ends.

At the southern terminus, a brief but impactful prohibition in February 2026 prevented hikers from accessing the final hundred feet to the border barrier. This policy threatened to erase a cherished tradition of touching the monument or the fence at the start or end of a journey. Public outcry, amplified by the Pacific Crest Trail Association (PCTA) and numerous hikers, swiftly led to a reversal a month later. Hikers can now once again reach the border, albeit with strict instructions to use designated crossings and avoid walking along the wall. This episode demonstrated the power of public advocacy but also signaled the increasing vulnerability of traditional access points.

More significantly, the PCT’s northern terminus has faced a permanent change. In January 2025, the Canada Border Services Agency (CBSA) announced it would no longer issue permits for PCT hikers to cross into Waterton Lakes Provincial Park. Previously, many northbound thru-hikers would continue eight miles into Canada to Waterton Village to celebrate and arrange transport. The CBSA’s decision, citing a lack of reciprocal access from the U.S. for southbound hikers at the terminus, forces PCT hikers to backtrack approximately 32 miles to Hart’s Pass—a significant and often logistically challenging diversion—or find alternative, less direct routes. This move reflects broader cross-border tensions, including economic disputes and differing approaches to border enforcement, and fundamentally alters the traditional completion experience for thousands of PCT thru-hikers annually. The CBSA notice indicates this permit program change is likely permanent, effectively severing a key international link for the trail.

Stakeholder Reactions and Advocacy

The various trail associations—the Arizona Trail Association, Continental Divide Trail Coalition, and Pacific Crest Trail Association—have found themselves on the front lines of these developments. Their reactions have been a mix of disappointment, proactive adaptation, and diligent advocacy. Matthew Nelson’s statement regarding the AZT’s Monument 102 underscores a resigned acceptance of the changes while actively seeking practical solutions for hikers. These organizations are crucial in providing updated information, alternative routes, and support to the hiking community, often working with government agencies to mitigate the impact of new restrictions. Their efforts highlight the importance of balancing recreational access with national security mandates, often navigating complex bureaucratic landscapes.

Hikers themselves have expressed a range of emotions, from frustration and disappointment over lost traditions to a resilient determination to adapt. Many view the termini as integral to the "thru-hike experience," marking symbolic milestones. The new requirements and closures necessitate more meticulous planning, especially for international hikers who face additional complexities in permit applications and escort requirements.

Government agencies involved, including DHS, U.S. Army, and CBSA, consistently frame these actions within the context of national security, border integrity, and sovereign control. While they acknowledge public land use, their primary mandate is often border enforcement, which can supersede recreational access when deemed necessary. The partial reversal at the PCT’s southern terminus, however, demonstrates that public pressure and coordinated advocacy can sometimes influence policy decisions, leading to compromises that preserve some elements of traditional access.

Broader Implications and Future Outlook

The restrictions on America’s long trails carry significant broader implications, extending beyond the immediate impact on hikers:

• Erosion of Trail Integrity: The closures and restrictions fragment the trails, compromising their integrity as continuous, unimpeded pathways. For trails designated as "National Scenic Trails," this continuity is a core tenet, and its disruption challenges the very essence of their purpose.
• Precedent for Public Land Access: These actions set a precedent for how national security concerns can override public access to federal lands. This raises questions about the future management of other public lands adjacent to international borders and the potential for further restrictions in sensitive areas.
• Environmental Impact: While not directly addressed in the article, border wall construction itself has significant environmental consequences, including habitat fragmentation, disruption of wildlife migration corridors, and potential impacts on water resources. These broader ecological concerns often intertwine with access issues for trails that traverse diverse ecosystems.
• Economic Impact: Thru-hikers contribute economically to small towns along the trails, spending on food, lodging, and supplies. While the direct financial impact of a few miles of closure might be minimal, the cumulative effect of altered routes, logistical hurdles, and a less appealing overall experience could subtly diminish trail popularity or shift economic benefits away from traditional gateway communities.
• International Relations: The CBSA’s decision regarding the PCT’s northern terminus highlights how border policies can reflect and influence broader international relations. The explicit mention of U.S. policies regarding southbound hikers underscores a tit-for-tat dynamic that impacts recreational users caught in the middle.
• The Symbolic Loss: Perhaps most profoundly, these closures represent a symbolic loss. The border, for many thru-hikers, is not just a political line but a physical and conceptual marker of beginning and end, a place of reflection and triumph. Denying access to these points diminishes the unique cultural and spiritual significance that these trails hold for thousands.

As border fortification efforts continue, the future of access to these iconic American long trails remains uncertain. Trail organizations are likely to continue their vital work of advocacy, adaptation, and communication, striving to preserve the spirit of these trails amidst evolving geopolitical realities. The ongoing dialogue between national security agencies and public land advocates will be crucial in shaping whether these temporary restrictions become permanent fixtures or if innovative solutions can be found to balance national interests with the enduring value of America’s wilderness pathways. The story of the AZT, CDT, and PCT at the border is a compelling narrative of how geopolitical forces can directly intersect with and reshape the most personal and profound experiences of outdoor adventure.