Spiral Tunnels (Kicking Horse) – Field, British Columbia, Canada | Train Spotting Location

Visitors typically station themselves at the signed Parks Canada viewing area above the Lower Spiral Tunnel or along the pull-off near the Upper Spiral Tunnel. From these terraces you watch trains grind upgrade at roughly 15–20 mph (25–30 km/h), the locomotives labouring audibly as dynamic brakes squeal on downhill movements. Because of the grade, consists are often fitted with mid-train and rear Distributed Power Units, adding multiple locomotive passages to photograph. Expect each sighting to last 8–12 minutes as the full train coils through 3,255 ft (993 m) of tunnel before re-emerging. In calm weather the diesel exhaust hangs briefly in the valley, amplifying the sensory impact. Trains are visible at safe, unobstructed distances of 150–300 m, ideal for lenses from 50 mm to 200 mm.

Set at roughly 4,200 ft (1,280 m) above sea level inside Yoho National Park, the viewpoint sits on a forested slope of lodgepole pine, Engelmann spruce, and subalpine fir. Sheer limestone cliffs bookend the valley while Mount Ogden rises directly above the Upper Tunnel portal. In summer, wildflowers punctuate the understorey and daylight stretches past 9 p.m., bathing the rails in warm side light. Autumn brings golden larches and crisp, clear air, though overnight frost is common. Winters are harsh; snow can exceed 5 ft (1.5 m) and avalanche control occasionally halts rail traffic, yet the contrast of red CPKC locomotives against fresh snow is spectacular.

The line is the Canadian Pacific Kansas City (CPKC) transcontinental mainline between Calgary and Vancouver. Freight dominates: unit grain, potash, mixed merchandise, intermodal stacks, and occasional crude oil trains. Average length ranges 7,500–9,500 ft (2.3–2.9 km), typically headed by ES44AC or AC4400CW units with one or two remote sets mid-train. Frequency fluctuates but 20–28 trains per 24 hours is a realistic expectation, skewing heavier overnight when westbound priority stacks climb the pass. Passenger movements are limited: VIA Rail’s “Canadian” (twice weekly in each direction, seasonal timing) and the luxury Rocky Mountaineer (April–October, daylight hours). Both slow for curves, offering extended photo opportunities.

1. Lower Spiral Tunnel Viewpoint: A raised wooden platform looks straight onto the east portal, allowing shots of the head-end exiting while mid-train power still enters. Morning light (07:30–11:00) illuminates locomotive noses; late afternoon gives rich side light for dramatic shadows.
2. Upper Spiral Tunnel Pull-off: From the gravel shoulder you can frame trains against Cathedral Mountain. Midday sun places the train front-lit; a polarizing filter deepens the forested backdrop.
3. “Split-Screen” Composition: Using a 70–200 mm lens, capture the locomotive on the lower level while the caboose or rear DPU appears above—an iconic double-deck image unique to this spot.
   Tripods are helpful for long exposures when fog drifts in, and a scanner tuned to 161.565 MHz (CP Road 1) alerts you to approaching traffic 10–15 minutes in advance.

Completed in 1909 to replace the perilous 4.5% “Big Hill,” the Spiral Tunnels reduced the grade to a manageable 2.2%, slashing accidents and enabling heavier trains. Each tunnel describes a 270-degree loop carved inside Cathedral and Mount Ogden, gaining or losing 50 ft (15 m) of elevation in tight mountain confines—a technique borrowed from Swiss railways but rare in North America. Interpretive panels detail the construction story and commemorate the surplus of navvies, many of them recent immigrants, who blasted through quartzite with black powder and early air drills. The engineering remains virtually unchanged, making every passing train a living exhibit of century-old design still meeting modern freight demand.

While many railfan sites offer mountain scenery or heavy traffic, the Spiral Tunnels deliver both plus the singular spectacle of watching one train cross its own path inside the mountain. The prolonged 10-minute passage allows ample photography time without the blink-and-miss rush common to faster corridors. Moreover, the official pull-outs provide interpretive signage, parking, and unobstructed sightlines, removing the need for risky trackside hiking found at other mountainous locations.