The participants of the Jukola and Venla Relays are prohibited to enter the area marked on the map before Jämsä Jukola. The instructions to declare an forbidden area are found in the sport rules on www.ssl.fi.
Sport rule, paragraph 2.53
Union area or the organiser can forfbid or restrict moving in the area for a limited time period prior to the competition (so called competing and training prohibition, see 7.17).
Sport rule, paragraph 7.17
When a competition terrain (competition area) is announced, competing and training in the area becomes prohibited. The organiser may allow exceptions. The competition terrain (competition area) of championships are to be announced by the union instructions.
The area attached is declared a forbidden competition and training area until the 2013 Jukola Relay.
The forbidden area is shown in the map below.