Rim to Rim is crossing the Grand Canyon from one rim to the other (South Rim to North Rim or reverse), covering 21-24 miles with 5,800+ feet elevation gain/loss. The hashtag documents one of America’s most challenging day hikes or multi-day backpacking trips.
Routes
- North Kaibab to Bright Angel (South to North): 23.5 miles, most popular
- South Kaibab to North Kaibab (South to North): 21 miles, steeper/more direct
- Rim to Rim to Rim (R2R2R): 42-48 miles round trip, completed in 24 hours (ultra challenge)
Challenges
10,000+ feet total elevation change (descend 5,000+ ft, climb 5,000+ ft), extreme temperature swings (rim: 50°F, canyon floor: 100°F+), water sources limited, and physical toll of descending steep trails (quad-destroying).
Timing & Permits
Rim to Rim day hike requires no permit (but discouraged by NPS due to danger). Multi-day backpacking requires permits (lottery system). North Rim closed mid-October to mid-May (snow).
Water Strategy
Bright Angel has reliable water. South Kaibab has ZERO water sources (all must be carried). Planning includes Phantom Ranch (canyon floor), Cottonwood Campground, and seasonal water sources.
Notable Athletes
Ultra runners complete R2R2R in 6-8 hours. Jim Walmsley set FKT (Fastest Known Time) at 5:55:20 (2016). The hashtag celebrates both casual hikers (12-18 hours) and elite performances.
Safety Concerns
Heat exhaustion, hyponatremia (overhydration), falls, and underestimating difficulty. NPS warns against rim-to-rim day hikes but thousands attempt annually.
Sources: Grand Canyon NPS, Grand Canyon Trust