The word "rallye" is usually associated with an organized competition, often involving racing cars or motorcycles. However, there are a few different synonyms that could be used to describe a similar event. One such word is "rally," which can refer to a gathering or assembly of people for a common cause or goal. Another possible synonym is "convoy," which suggests a group of vehicles traveling together, often for a specific reason. Finally, the word "muster" could also be used to describe a rally, especially if it involves bringing together a group of people or vehicles for a specific purpose or mission.