The PATH, Explained: How to Actually Navigate Downtown Toronto's Underground City

Every downtown Toronto visitor eventually descends into the PATH by accident, walks for fifteen minutes, and surfaces somewhere unexpected. It is the world's largest underground pedestrian shopping complex by Guinness World Records count, and it is genuinely useful — but only if you understand the one navigation system it runs on. Here is what the PATH is, when to use it instead of the street, and how to stop getting lost in it.

What it actually is

The PATH is roughly 30 kilometres of climate-controlled walkway linking more than 75 buildings, six TTC subway stations and three regional GO and UP Express hubs. About 200,000 people move through it on a typical day. It runs the length of the downtown core, from Union Station in the south up to Atrium on Bay in the north, connecting most major office towers, hotels, malls and entertainment venues along the way.

It is also a retail district in its own right: some 3.7 million square feet of space, over 1,200 restaurants, shops and services, and around $1.7 billion in annual sales. Among the places you can reach without going outside are Scotiabank Arena, the CF Toronto Eaton Centre, the Hockey Hall of Fame, Roy Thomson Hall and City Hall.

The one thing you need to know: the colour code

Nearly everyone who gets lost in the PATH does so because they never learned the wayfinding system, which is genuinely simple once explained. The four letters in the PATH logo are each colour-coded to a compass direction:

P in red points south. A in orange points west. T in blue points north. H in yellow points east.

The multi-coloured PATH signs appear at every major intersection of the network. Once you know which letter to follow, the system works — head for the red P and you are moving toward Union Station, follow the blue T and you are heading up toward Dundas.

When the PATH beats the street

The obvious case is weather. In February slush or a July heat warning, walking from Union to the Eaton Centre underground is not merely more comfortable, it is faster, because you are not waiting at signalised intersections. The same applies to rain, which downtown Toronto delivers without much warning.

It is also the better choice when you are connecting between transit modes with luggage, or moving between an office tower and Union at rush hour, when sidewalk congestion along Bay and Front is worse than anything underground.

When to stay above ground

The PATH is built for weekday commuters, and that shapes everything about it. Large stretches are quiet or closed on evenings and weekends, when the office towers they serve are empty — which means the route that worked beautifully at 8:30 a.m. on a Tuesday may be shuttered at 8:30 p.m. on a Saturday. Verify before relying on it outside business hours.

It is also, bluntly, not scenic. If the weather is good and you have any interest in the city as a place, the walk from Union up to Queen along Bay or through Commerce Court shows you far more architecture than the tunnel underneath it. And for short hops of two or three blocks, surfacing and re-entering costs more time than it saves.

How to use it well

Anchor yourself to buildings, not tunnels. The PATH is easiest to navigate as a sequence of named towers and malls — Union, Royal Bank Plaza, First Canadian Place, Eaton Centre — rather than as an abstract network of corridors. Knowing your next building is more useful than knowing your next turn.

Take a photo of a PATH map on your phone at the first one you pass; cell service underground is inconsistent and a cached image beats a spinning loader. And if you are meeting someone, name a building and a specific entrance rather than "in the PATH", which is the underground equivalent of arranging to meet "downtown".