I'd seen Mary's Nipple various times from down around Richfield and thought how impressive it looked. It's way easier than it looks from down in the valley, but still fun. Sees a lot of visitors (boy scout troops, etc.) 2.2 miles, 1,340 feet one-way. Just 2 notes:
1) As ZeeJay notes, FR290 is a little rough. If you down't have high-clearance 4WD, access via Skyline Drive from the South or from the North (Twelve Mile Flat.)
2) The initial ATV track is more of a 4WD road. About 1/4 mile from the TH, the ATV track you want (which is signed no ATVs, but obviously regularly used) forks off to the left. Well-trodden trail the whole way.
Hiked to the top with dog Torrey and friend Chris as part of a long day of driving and hiking around the Wasatch Plateau.
With Kimberly on a nice October day.
Marys Nipple is quite prominent when viewed from the Sevier Valley. Cool peak that still had some snow up there in late June.
Climbed up the east side from the beaver pond near skyline drive. It was 1.45 miles one-way but beautiful.
I thought FR0290 was kind of challenging. Did Mary's Nipple and a few other small peaks in the area.