Dragon Race becomes available as soon as you reach level 22. Those farmers, who have joined a guild before the start and who have confirmed the participation, can join the race. Go to the race tab in order to do that. And please note: if you do not want to participate, your rejection will be valid for the next race only. You can’t just drop out in the middle of the race.
Dragon Race starts on Monday and ends on Fridays. In order to win the contest, each team has to get as many race points as possible within this time. Complete race tasks to get these points. For example, if your guild is in the bronze league, each teammate can complete 7 tasks (8, if you purchase the last task using your diamonds).
The guild that completes the greater number of tasks faster than the other guilds wins.