12.56 miles, 3,763 feet, 4 hours 3 minutes: Fairfield c/w. In cloud throughout - cloud base at about 400 feet. Visibility down to 30 metres or so at times. Not much wind. Extensive sheets of ice on the lower paths, lots of snow higher up, averaging about six inches deep, but with lots of drifts which made running harder than usual. Saw no-one else on the fell. Took a bad line off Hart Crag, had to retrace my steps. Microspikes from Nab Scar to Nook Farm.