Climbed with Tomboy from Imogene Pass with Steve Knapp, we tried to explore combining with T5 but that was a futile effort. The ridge is a chossy sawblade, we thought maybe we could contour below but after dropping 200+ feet of scree gully we just didn't see any reasonable route. Instead we went back to the pass and did T7 and T8.
Climbed the trio from Imogene Pass. Drove up the evening before and got sick overnight (food poisoning?) but managed to complete the hike. Didn't want to have to drive my 4runner up to the pass again; it was tricky.
The forecast was dim, rain and clouds all day long, so I wanted a peak which surroundings I knew well. Chicago was a great choice. I hiked up Imogene from Camp Bird, the ridge to Chicago Peak's summit, continued onto Point 13,242 = Little Chicago, descended onto Little Chicago - United States Mountain saddle. Spend about 1 hr figuring out the route on United States and finished the day with a thick rain. United States Mountain took a lot of work for an unranked 13er.