In the summer of 1934, two expeditions attempted to climb the mountain. The first expedition, made up of climbers from Winnipeg, made their attempt on the northwestern flank which had not been explored by the Mundays. After crossing Tatlayoko Lake and making their way down the Homathko River, they then spent two days constructing a bridge over Nude Creek before reaching the Tiedemann Glacier on June 23. It took them three days to reach the shoulder of Mt. Waddington at . They attempted the summit on June 28 but poor weather and route conditions on the final tower forced them to retreat, from the top. The second expedition, consisting of climbers from British Columbia, made their attempt from the southeast. On June 23, they established their base camp on the Franklin Glacier. The ascent abruptly ended three days later when one of the climbers fell to his death from the southeast ridge. In 1935, a group of climbers from the Sierra Club of California made three attempts from their base camp at the Dais Glacier. The group failed in two attempts on the south face due to stormy conditions, poor route conditions and falling ice. Two climbers succeeded in reaching the northwest summit (first climbed by the Mundays) on a third attempt but proceeded no further.