Finish the Camel racing quest chain, whic, ends with the Ultimate Camel Gauntlet Test quest with Premium Egyptian content to finish this up. These quests start after you finish the 3 priests quest in Nubia where you must sneak the 3 priests to the Desert Trader, who will then be the quest giver for the Camel Gauntlet (just outside the gates of the Nubian Expedition). These quests require you to race through 5 checkpoints with progressively more camels (up to 5), progressively more must finish the race (up to 5) and then with a decreasing time limit as you continue through the quests. Eventually needing 5 camels to reach the end in 2 minutes.
To simply summarize, the race for the last quest only (really ALL of them are a cake walk), order all your camels to sprint to the boat on your map. Cross the river and send the boat down to the Southern end of the river where the road meets it again, while you have the camels hug the NE wall passed the first set of Spearmen and watch for the next set as it's very large. Either you can sneak to the end of the road and up to your boat before they reach the river, or wait and follow the path to the SE, around the trees, and then to the river. Cross the river on the boat again and either land N or S of the pathing Spearmen on the other side of the river. Unload your camels once they're clear and launch your camels straight to the end point. Doing these all in one sitting will make the last race a joke since every enemy follows the same path in each quest. Cake.