A major upgrade to the rail service between Dublin and Belfast is set to reduce journey times to less than two hours, following a nearly €700 million investment in new trains and infrastructure improvements. The project, scheduled for completion by 2028, aims to enhance cross-border connectivity on the Enterprise line, which currently links the two cities over a 180-kilometer route.

Under the plan, eight new Stadler intercity trains will join the existing fleet to increase service frequency to up to 16 daily trips. The upgrades are expected to deliver faster and more reliable journeys by improving train acceleration and overall performance along the route, which includes stops at Drogheda, Dundalk, Newry, and Portadown. At present, travel times can extend to over two hours and fifteen minutes.

The Enterprise line, originally launched in 1947 as a steam-powered service, has experienced a 40% rise in passenger numbers since the introduction of hourly services in late 2024. The revamped trains will be equipped with trimode technology, enabling operation on electric power, diesel, and battery use. This innovation is designed to provide quieter travel, reduce emissions, and facilitate a gradual transition toward full electrification of the line.

Each new train will accommodate approximately 400 seated passengers and feature modern amenities such as USB charging points, onboard catering facilities, and step-free access to improve accessibility.

The investment is jointly funded by the governments of Ireland and Northern Ireland, with a combined €698 million budget. Of this, €165 million is sourced from PeacePlus, a program involving the British government and the European Union aimed at supporting peace and development initiatives.

The launch event took place at Belfast Grand Central station and was attended by Ireland’s Taoiseach Micheál Martin and Northern Ireland’s First Minister Michelle O’Neill. Speaking at the ceremony, Martin described the agreement as heralding a "new major chapter" in cross-border rail connectivity on the island of Ireland. He also emphasized that the project would support job creation and facilitate easier travel between the two capitals.

Additionally, Martin indicated that further investments in Northern Ireland's rail network would be forthcoming through the Shared Island Fund, with detailed plans expected to be announced soon. The improvements are part of broader efforts to enhance transport infrastructure and economic ties across the region.