This hike takes you up Arizona's 3rd and 4th highest peaks. Doyle is Arizona's 4th highest ranked peak, but 6th highest point. Aubineau peak and Rees Peak are higher, but are both unranked since they do not ascend over 300' from the saddle. This is both an on and off trail hike. There are 3 main ways to get to these peaks.
One is from the Weatherford trail. Follow it till you get to the saddle.
The second is from Locket Meadow. This is your shortest approach. From the Inner Basin Trailhead take it till you get into the Inner Basin. Stay on the trail till you get considerably close to Fremont Peak. Get off the trail and hike up the treeless rocky area till you intercept the Weatherford Trail. Take a left till you get to the Saddle.
These two peaks offer very different views of Flagstaff and the surrounding areas. Fremont gives the better view out of these two peaks. On this hike since they sit right next to each other it only makes sense to hike them both. They can also be done in conjunction with doing Humphreys Peak to make for a longer hike.
From the saddle, Doyle is the easiest and probably should be done first. To do it just hike up the grassy slopes to the peak. This peak is steep, but there is not much route finding to do. The peak has a broad top with trees on top that restricts you view. Fremont takes quite a bit more effort. From the saddle the elevation gain is near 1,200 feet. Once you start heading up the ridge starts out quite broad and is easy to follow. As you start to ascend in elevation it narrows down and you have to stay on the left side of the ridge, but near the top of it. You don't want to get to far away from the ridge crest. Once you are near the peak you can get back on the ridge and follow it to the peak. The peak has wonderful views of Flagstaff, the rest of the San Francisco Peaks and Northern Arizona.
The 3rd way up is taking the Humphreys Peak trail. Take this trail till you get to the saddle. From the saddle take the Weatherford trail to the saddle between Agassiz Peak and Fremont. Hike up the southern ridge on Fremont for about 300 vertical feet. Then take the ridge across till you reach your final ascent. This 300'ascent takes you up the most difficult part of the whole hike. It's scree the whole way, and it's like walking on sand, take a step and slide. From the peak you can return the way you came or head down the northern ridge to ascend up Doyle Peak.
The interesting thing about this hike is your high point is along the Weatherford Trail on Agassiz at an elevation of about 12,000 feet. - Mar 31 2004 Steven