1. Northwest ridge (1964.08.11) Paddy Sherman and party. Scramble along north ridge. From camp in the upper Bull River valley (immediately north) climb to 9000 foot saddle on the ridge connecting Harrison and Mount Folk. Then head south along ridge, and drop 200' to an easier ridge, then wrap around to below the southwest ridge. This is scree, and from here a gully can be followed to the summit. See First Ascent".
Distance: 5 km, 4000' gain
AvgTime: 7 hours to summit, 5 hours return
2. North Couloir (1993.10.) Rick Collier, Reg Bonney. Steep, rockfall danger. When I climbed this peak in 1993 with Reg Bonney, we did so on the Thanksgiving weekend in order to have good conditions on the N glacier (really more of an ice couloir). And we did. This is a spectacular alpine climb, but certainly not the easiest ascent route, so I'll mention the details only briefly: ascend snow until directly below the couloir; cross the 'schrund wherever possible; ascend directly up ice that varies from crystallized to blue. The angle gets quite steep very quickly and practically never relents until quite close to the summit; it is a longer climb than appears to be from below. There is the possibility of serious rockfall from the righthand side; the safer, lefthand side, however, is also steeper yet again. October is a good time for this route since the ice has been in permanent shadow for 2-3 weeks by this point.