Mount Everest is significantly higher than Denali (formerly Mt. McKinley). The question's premise is reversed—Denali is not taller than Everest; it's the highest peak in North America, while Everest is the highest on Earth.
| Metric | Denali (Mt. McKinley) | Mount Everest | Difference |
|---|---|---|---|
| Elevation (feet) | 20,310 ft | 29,032 ft | Everest +8,722 ft |
| Elevation (meters) | 6,190 m | 8,848.86 m | Everest +2,659 m |
| Rank | 1st in North America 3rd in Seven Summits | 1st in World 1st in Seven Summits | - |
| Factor | Denali | Everest |
|---|---|---|
| Latitude | 63°N (subarctic) | 28°N (subtropical) |
| Weather | Extreme cold, wind, storms; -40°F common | Extreme cold, jet stream winds; "Death Zone" >26,000 ft |
| Oxygen | Normal at summit (6,190 m) | 33% of sea level (8,849 m); supplemental O₂ standard |
| Route | West Buttress (standard): glacier travel, crevasses, fixed lines | South Col (standard): Khumbu Icefall, Lhotse Face, Hillary Step |
| Success Rate | ~50-60% | ~60-70% (commercial expeditions) |
| Fatality Rate | ~1-2% | ~1-2% (recent decades) |
| Season | May-July | April-May (pre-monsoon) |
Everest is 8,722 feet higher than Denali by standard elevation measurement. Denali has the world's greatest base-to-peak rise and uniquely severe subarctic conditions. Both are supreme mountaineering challenges in different ways.