The royal decree of 1853 stated that "From 1854 onwards there shall in Røros be held a market, commencing on the second to last Tuesday of the month of February and continuing until the
following Friday".

The grand opening ceremony includes the arrival of equestrian equipages numbering 80. It marks the start of five days that comprise a traditional trading market with crowds of shoppers viewing the wide range of goods offered at the stalls of the around 250 exhibitors during the day, while a broad selection of dances and other cultural events
ensures the right atmosphere at night.