If players from each team misses, they must sprint back and continue the process of collecting rocks from the rockpile until they toss a total of five rocks into the bucket.
The fifth checkpoint is a bicycle ride to the Slogen trailhead.
Traditional Iranian funeral sweetmeats were also placed out on a table as a sign of mourning.
Protesters were critical of the Iranian government, accusing it of diverting money into nuclear weapons programmes rather than improving the safety of buildings.
Exiled Iranians paid tribute to the victims of the Bam earthquake as they joined a protest rally over plans to expel an opposition group from Iraq.