GLMZ's extreme vertical density—residential and commercial towers routinely reaching 120 to 200 stories—creates transit demands that horizontal networks cannot address. Municipal cable transit systems, locally called SkyThreads, provide scheduled collective transport along fixed aerial cable routes that connect mid-height tower platforms, elevated transit hubs, and skybridge corridor networks at altitudes between the 30th and 80th floor equivalents. The system operates on continuous-loop monocable technology, with enclosed 12-passenger gondolas that detach from the main cable at stations for boarding and reattach automatically, maintaining uninterrupted cable movement at 6 meters per second and allowing stations to function without stopping the overall system.

The cable infrastructure is anchored to tower structural cores rather than ground-level pylons wherever possible, a design approach that reduces street-level footprint and distributes mechanical loads across the existing building stock. Anchor point agreements between the Municipal Transit Authority and tower-owning corporations are among the more contentious ongoing negotiations in city infrastructure governance, as tower owners can and do extract significant concessions—preferential station placement, premium boarding zone designations, and in several documented cases, station access restricted to building tenants—in exchange for structural access rights. The resulting network geometry is visibly irregular, routing around towers whose owners declined anchor agreements and creating coverage gaps that correspond closely to corporate entities with competing private transit interests.

SkyThread gondolas are climate-controlled, equipped with passenger Wi-Fi and display advertising panels, and monitored by onboard cameras linked to the MTA's transit security network. The system serves primarily mid-tier worker populations making intra-district vertical commutes—the fare structure is significantly more accessible than SkyReach, at approximately 18 credits per trip, though still above the reach of peripheral district residents who are in any case excluded by geographic coverage gaps. A notable informal use of the system involves its extensive maintenance catwalks and cable anchor platforms, which have become de facto semi-public spaces in several districts, occupied by small vendor operations, informal housing structures, and in at least two cases, functioning community radio broadcast stations operating from positions that are technically within MTA infrastructure jurisdiction but practically inaccessible to enforcement personnel.

Maintenance of the cable infrastructure presents ongoing engineering challenges in GLMZ's environment. Urban particulate loading, electromagnetic interference from dense antenna arrays, and the thermal cycling caused by waste heat from tower HVAC systems all accelerate cable fatigue beyond the rates anticipated by manufacturers' original specifications. The MTA operates a continuous cable inspection program using small autonomous crawler robots that travel the full cable network on 72-hour cycles, transmitting structural integrity data to a central monitoring platform. Two major cable failures have occurred since the system's expansion phase in 2151, both resulting in gondola emergency descent events rather than free falls due to independent redundant braking systems, but both also triggering extended multi-route shutdowns that caused significant disruption to mid-tier commuter populations with few alternative transit options at comparable price points.