Trains tackling the steep western slope of kicking Horse Pass in Yoho National Park wind their way through the Spiral Tunnels. Canadian Pacific completed the figure-eight track in 1909. An integral part of the railway's network, almost 30 trains a day continue to use the spiral Tunnels, providing the most direct route between central and eastern North America and Canada's Pacific Gateway.

"The Spiral Tunnels provide Canada with a safe and reliable passage to import and export goods and raw materials," said Canadian Pacific Vice-President of Operations Mike Fanczak. "CP is proud to have participated in today's festivities by donating a centennial train ride through the tunnels to the community of Field."

Capacity upgrades and computerized controls ensure safe and reliable train service in all weather, every day of the year. The Trans Canada Highway follows the original "Big Hill" rail grade and sees more than 120,000 visitors every summer at the Spiral Tunnels Viewpoint in Yoho National Park.