moisture in the atmosphere. The final few hundred yards of the climb consists of a 30-degree slope often scoured to bare rock and tundra by the fierce wind. The crossing point itself is a symmetrical saddle, with two peaks of similar height separated by . The south side of Eagle Summit is not as steep, and mushers generally have an easier time reaching the checkpoint at Mile 101. When descending the steep northern slope of Eagle Summit on the Fairbanks–Whitehorse route, many mushers wrap their sled runners in chains to increase friction and slow the plunge. The Mile 101 checkpoint is a cabin at mile marker 101 (the distance from Fairbanks) on the Steese Highway. At Mile 101, mushers have the option of taking their four-hour rest during even years. They can also take the rest at Central during even years. Again, the three minute start difference will be subtracted from the race if the musher desires to take their rest here. The cabin gives mushers the opportunity for a short rest between Eagle Summit and Rosebud Summit. The ascent of Rosebud Summit begins about south of the dog drop. It consists of a gradual climb of followed by a steep descent into the valley that contains the north fork of the Chena River. The descent also brings mushers back into forested terrain. The trail then parallels a road for about before entering the final checkpoint at Twin Bears Campground near Two Rivers. Two Rivers to Fairbanks Two Rivers is the final checkpoint in the Whitehorse–Fairbanks route. Mushers are required to rest at least eight hours in Two Rivers in odd years to ensure the health of their dogs during the final leg of the race. The terrain in this stretch is among the easiest on the trail, with gently rolling hills and forest which gradually change into an urban landscape as racers approach Fairbanks. The greatest challenge for racers in the Two Rivers area is distinguishing the Yukon Quest trail from other sled dog trails, many of which have similar markings. Mushers have occasionally been deceived by these markings and taken wrong turns. Beyond Two Rivers, the trail reaches the Chena River northwest of Fairbanks. This is the final stretch, and mushers use the river to enter Fairbanks and reach the finish line, which is on the river itself in the middle of downtown Fairbanks. Regardless of the timing