GRAND CANYON RIM-TO-RIM-TO-RIM: What I did RIGHT, What I did WRONG (Training, Gear, Food...)

In late December 2020, I ran 48 miles across the Grand Canyon and back, alone in the Winter. In this video, I talk about how I planned and trained for this run, along with what I did right...and what I did wrong.
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Original video: • Running Across the GRA...
00:17 Overview of Route
01:14 Planning
02:23 Overview of Training
03:03 Weather and Safety
04:09 Safety considerations
05:16 Route considerations
07:32 Gear
12:57 Food
14:57 What I did RIGHT
25:15 What I did WRONG
Gear List:
Shoes: Hoka Challenger ATR 5
Socks (outer): Thorlos Lite Running Mini-Crew
Socks (inner): Injinji Trail Midweight Mini-Crew
Poles: Black Diamond Distance Carbon FLZ Trekking Poles
Microspikes: Snowline Chainsen Trail
Running belt: Amphipod RunLite Xtech 4 Plus Hydration Belt
Running vest: Ultimate Direction Adventure Vest
Sunglasses: Pepper's Ricochet Shield
Hat: Outdoor Research Sun Runner Cap
Balaclava: Seirus Balaclava
Beanie: REI Co-op Polartec Fleece Beanie
Jacket: REI Co-op Groundbreaker Rain Jacket
Fleece Shirt: Patagonia Micro D Fleece Pullover
Gloves: Seirus Soundtouch Xtreme
Stuff/Dry Sack: Zpacks Medium-Plus Stuff Sack
Water bottle: Platypus Platy Water Bottle - 70 fl. oz.
Water filter: Sawyer mini
Headlamp: Petzl Actik Core Headlamp
Armpit lube: Body Glide
Sunscreen: Banana Boat Ultra Sport Sunscreen Lotion, SPF 100
Photography and GPS:
Camera: iPhone 12 mini (4K at 24 fps)
GPS App: Gaia GPS
Camera case: LifeProof Fre
Tripod: Joby GripTight ONE GP Stand