No sustained descent long enough to shear skin on its own. Friction here comes from time on feet, not gravity.
China · July · 104 mi
Foot care for Nike ACG Ultra-Trail Chongli 104 mi
Nike ACG Ultra-Trail Chongli 104 mi is hours on feet. Shear adds up.
Threat matrix
What Nike ACG Ultra-Trail Chongli 104 mi does to feet.
Every line below is computed from published course data or written by PR Run and labeled as such.
- Hours on feet104 miles inside a 38 hour limit. Every hour adds shear, swelling, and sock saturation.Course data
- Heat and sweatJuly highs reach 85 degrees F. Sweat saturates socks, skin softens, friction climbs.Course data
- Long aid gaps20.8 miles between stations at the widest gap. Carry what you need to fix a hot spot alone.Course data
- Night hoursA 38 hour window means hours of taping in the dark with cold hands. Practice it that way.Course data
Downhill shear
Where gravity works on your toes.
Sustained descents pulled straight from the elevation profile. Pretape before these, not after.
The schedule
Where you sit down and take the shoes off.
Set your goal time. The clocks, the stop plan, and the kit all move together.
- ChinaMI 006:00
Eyes only
Named station on course.
- Eyes only. Feel for hot spots through the sock and keep moving.
- Nike ACG Ultra-Trail Chongli mile 21MI 2111:59
Shoes off
20.8 mi since the last stop, cutoff 7.6000000000000005 h.
- Shoes and socks off. Pat completely dry, fresh socks, powder if the last pair was soaked.
- Nike ACG Ultra-Trail Chongli mile 42MI 4218:08
Shoes off
20.8 mi since the last stop, cutoff 15.200000000000001 h.
- Shoes and socks off. Pat completely dry, fresh socks, powder if the last pair was soaked.
- Nike ACG Ultra-Trail Chongli mile 62MI 6223:57
Socks and a look
20.8 mi since the last stop, cutoff 22.8 h, late race, feet already soft.
- Socks off. Check the pressure points and swap if the pair is wet.
- Nike ACG Ultra-Trail Chongli mile 83MI 8306:24
Socks and a look
20.8 mi since the last stop, cutoff 30.400000000000002 h, late race, feet already soft.
- Socks off. Check the pressure points and swap if the pair is wet.
- Finish ChinaMI 10413:00
Eyes only
20.8 mi since the last stop, cutoff 38 h, late race, feet already soft.
- Eyes only. Feel for hot spots through the sock and keep moving.
Checked on top of the essentials for Nike ACG Ultra-Trail Chongli 104 mi.
Vest / pack
Crew bag
Drop bag
Kit deltas
What Nike ACG Ultra-Trail Chongli 104 mi adds to the standard kit.
- Powder and a moisture barrierSweat is the friction multiplier on this course.
- Vest foot kit you can use aloneThe widest gap is long enough that a hot spot becomes a blister before the next station.
- Light you can tape byTaping in the dark with cold hands is a different skill than taping at your kitchen table.
- Half size up in the crew bagFeet swell over the back half. A tight shoe at midnight ends races.
Shoes
What survives this course.
Matched on terrain, technicality, and distance. Fit still beats every spec, so try them on a long run first.
- Craft Nordlite Ultra Pro87% MATCH32mm heel · 6mm drop · 4mm lugs. Cushion that keeps feeling like cushion at hour twenty.
- Altra Olympus 285% MATCH33mm heel · zero drop · 4mm lugs. Cushion that keeps feeling like cushion at hour twenty.
- New Balance Fresh Foam X More Trail V385% MATCH38.6mm heel · 7.1mm drop · 5mm lugs. Cushion that keeps feeling like cushion at hour twenty.
Crew
What your crew needs on paper.
Two plates. On the left, the race-specific notes that never make it into the standard script. On the right, the printable card your crew reads at two in the morning under a headlamp.
Race day notes
- Crux near Humid climbs, ridge exposure, and aid gaps in remote terrain near mile 68. Plan foot work before the field splits.
- Surfaces: 75% trail / 20% dirt road / 5% paved. Match lugs and tape adhesion to the dominant surface.
- Air band 50°F to 85°F. Crew should carry dry socks and skin lube when heat or rain is in range.
- Cutoff 38 hours. Longer stops only where the schedule has real buffer.
- Educational only. Test every tape, sock, and shoe combination on long runs before race day.
Where you sit down
- Nike ACG Ultra-Trail Chongli mile 21MI 21
- Nike ACG Ultra-Trail Chongli mile 42MI 42
Print card
A single sheet your crew reads at two in the morning: the stop script, the mandatory kit, and the calls that pull the runner. Print it, laminate it, staple it to the drop bag.
Crew foot care card
Station script. Three to eight minutes if organized.
- Runner sits. Shoes and socks off both feet.
- Inspect: hot spots, maceration, nails, blisters.
- Clean with wipe. Pat completely dry. No tape on damp skin.
- Treat hot spots first. Drain blisters only if necessary with clean technique.
- Fresh socks. Relace shoes. Runner stands and tests before leaving.
Mandatory kit
- Leukotape, kinesiology tape, wipes, blister patches, moleskin
- Scissors, nail clippers, lubricant, powder, spare socks (2+)
- Antibiotic ointment, gloves, cohesive wrap, small towel
When to pull runner: spreading redness, loss of feeling, gait collapse, unmanageable pain.
PR Run · pr.run/foot-care
FAQ
Nike ACG Ultra-Trail Chongli 104 mi foot questions.
- 01
Where should I stop for foot care at Nike ACG Ultra-Trail Chongli 104 mi?
Nike ACG Ultra-Trail Chongli mile 21 at mile 20.8, Nike ACG Ultra-Trail Chongli mile 42 at mile 41.6. Those stops carry the most ground and descent behind them, so a sock change and a tape check pay for the minutes they cost.
- 02
How do I keep my feet dry at Nike ACG Ultra-Trail Chongli 104 mi?
July highs reach 85 degrees F. Sweat saturates socks, skin softens, friction climbs. Change socks at every stop you can, run powder or a moisture barrier, and lean forward when you dump water on your head so it misses your shoes.
- 03
How many sock changes for Nike ACG Ultra-Trail Chongli 104 mi?
Plan one at every foot stop you have access to, and carry one spare pair beyond that. 104 miles inside 38 hours is long enough that dry socks are faster than the five minutes they cost.
- 04
What goes in my vest for Nike ACG Ultra-Trail Chongli 104 mi?
20.8 miles between stations at the widest gap. Carry what you need to fix a hot spot alone. Tape, two wipes, a blister patch, and a small tube of lube covers a hot spot without waiting for crew.
- 05
How do I stop blisters at Nike ACG Ultra-Trail Chongli 104 mi?
Start from the biggest threat on this course. 104 miles inside a 38 hour limit. Every hour adds shear, swelling, and sock saturation. Fit the shoe with room for swelling, pretape the spots that have blistered on you before, keep grit out, and change socks at every stop you have access to. Blisters come from pressure, friction, and moisture, so remove whichever one this course hands you the most of.
- 06
What foot care kit should I pack for Nike ACG Ultra-Trail Chongli 104 mi?
Beyond the standard kit, this course calls for powder and a moisture barrier, vest foot kit you can use alone, light you can tape by, half size up in the crew bag. Sweat is the friction multiplier on this course.
- 07
What shoes work for Nike ACG Ultra-Trail Chongli 104 mi?
75% trail / 20% dirt road / 5% paved at technicality 5/10 points toward Craft Nordlite Ultra Pro, Altra Olympus 2, New Balance Fresh Foam X More Trail V3. Whatever you pick, race it on a long run first and leave room for feet that swell over the back half.
Educational only. Not medical advice. Persistent pain, infection, or numbness: see a podiatrist or sports medicine clinician.
Train for it
Feet get you to the finish. The plan gets you there on the clock.
Foot care is one system on Nike ACG Ultra-Trail Chongli 104 mi. Climbs, descents, heat, fueling, and cutoffs are the rest of it.