Styrkeprøven, also called Den Store Styrkeprøven (The Great Trial of Strength), is a 540 km (335.5 mi) long bicycle cyclosportive

Cyclosportive

A cyclosportive, or often simply sportive, is a short to long distance, organised, mass-participation cycling event, typically held annually....

 which starts in Trondheim

Trondheim

Trondheim , historically, Nidaros and Trondhjem, is a city and municipality in Sør-Trøndelag county, Norway. With a population of 173,486, it is the third most populous municipality and city in the country, although the fourth largest metropolitan area. It is the administrative centre of...

 and finishes in Oslo

Oslo

Oslo is a municipality, as well as the capital and most populous city in Norway. As a municipality , it was established on 1 January 1838. Founded around 1048 by King Harald III of Norway, the city was largely destroyed by fire in 1624. The city was moved under the reign of Denmark–Norway's King...

, Norway

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

. It was first held in 1967 and has taken place since then in late June every year.

Den Lille Styrkeprøven (The Little Trial of Strength, word-play on Lillehammer), which is 180 km (111.8 mi), from Lillehammer

Lillehammer

is a town and municipality in Oppland county, Norway, globally known for hosting the 1994 Winter Olympics. It is part of the traditional region of Gudbrandsdal. The administrative centre of the municipality is the town of Lillehammer. As of May 2011, the population of the town of Lillehammer was...

to Oslo, is also held at same time.