DOWNHILL SHEAR14,900 FT OF LOSS
Italy · July · 63 mi
Foot care for Gran Trail Courmayeur
Gran Trail Courmayeur is a descent race. Toes and nail beds pay first.
Threat matrix
What Gran Trail Courmayeur does to feet.
Every line below is computed from published course data or written by PR Run and labeled as such.
- Total descent load14,900 ft of cumulative descent. Nail beds and forefoot pay for all of it.Course data
- Heat and sweatJuly highs reach 75 degrees F. Sweat saturates socks, skin softens, friction climbs.Course data
- Hours on feet63 miles inside a 28 hour limit. Every hour adds shear, swelling, and sock saturation.Course data
- Downhill shearMile 0 to 3.5 drops 1,300 ft at 7.1 percent average grade. Toes hit the front of the shoe, heels lift.Course data
- Cold and numb toesLows near 32 degrees F. Wet feet plus cold is how trench foot and numb toes start.Course data
- Technical groundTechnicality 6/10. Rock strikes, side loading, and constant foot correction grind the same spots.Course data
- Long aid gaps12.6 miles between stations at the widest gap. Carry what you need to fix a hot spot alone.Course data
- Night hoursA 28 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.
Heat and moisture
When the shoe stops drying out.
Modeled across the cutoff window from 7 years of race-date weather at points along the course.
- HEATSweat outruns the shoe
- HUMIDNothing dries out
- WETPlan on soaked feet
- COLDNumb toes hide damage
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.
- ItalyMI 006:00
Eyes only
Named station on course.
- Eyes only. Feel for hot spots through the sock and keep moving.
- Gran Trail Courmayeur mile 13MI 1310:34
Shoes off
12.6 mi since the last stop, 1,300 ft of descent into it, cutoff 5.6000000000000005 h.
- Shoes and socks off. Pat completely dry, fresh socks, powder if the last pair was soaked.
- Warm the feet before tape. Cold damp skin will not hold adhesive.
- Pretape hot spots. 1,250 ft down through mile 17 to 20 is next.
- Gran Trail Courmayeur mile 25MI 2515:10
Shoes off
12.6 mi since the last stop, 1,250 ft of descent into it, cutoff 11.200000000000001 h.
- Shoes and socks off. Pat completely dry, fresh socks, powder if the last pair was soaked.
- Warm the feet before tape. Cold damp skin will not hold adhesive.
- Pretape hot spots. 1,250 ft down through mile 28 to 31 is next.
- Gran Trail Courmayeur mile 38MI 3819:58
Socks and a look
12.6 mi since the last stop, 1,250 ft of descent into it, cutoff 16.8 h, late race, feet already soft.
- Socks off. Check the pressure points and swap if the pair is wet.
- Gran Trail Courmayeur mile 50MI 5000:27
Socks and a look
12.6 mi since the last stop, cutoff 22.400000000000002 h, late race, feet already soft.
- Socks off. Check the pressure points and swap if the pair is wet.
- Finish ItalyMI 6305:00
Eyes only
12.6 mi since the last stop, cutoff 28 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 Gran Trail Courmayeur.
Vest / pack
Crew bag
Drop bag
Kit deltas
What Gran Trail Courmayeur adds to the standard kit.
- Powder and a moisture barrierSweat is the friction multiplier on this course.
- Pretape for toes and heelsLong descents load the front of the shoe and lift the heel.
- Extra dry socks and a towelCold wet feet break down faster than cold dry feet.
- 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.
- Moleskin for pressure pointsRock strikes and side loading build hot spots off the usual map.
Shoes
What survives this course.
Matched on terrain, technicality, and distance. Fit still beats every spec, so try them on a long run first.
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 High cols above 2,400 m and long stone descents near mile 40. 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 32°F to 75°F. Crew should carry dry socks and skin lube when heat or rain is in range.
- Cutoff 28 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
- Gran Trail Courmayeur mile 13MI 13
- Gran Trail Courmayeur mile 25MI 25
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
Gran Trail Courmayeur foot questions.
- 01
Where should I stop for foot care at Gran Trail Courmayeur?
Gran Trail Courmayeur mile 13 at mile 12.6, Gran Trail Courmayeur mile 25 at mile 25.2. 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
Which section of Gran Trail Courmayeur wrecks feet?
Mile 0 to 3.5 drops 1,300 ft at 7.1 percent average grade. That is where toes meet the front of the shoe and heels start to lift. Pretape before it, not after.
- 03
How do I keep my feet dry at Gran Trail Courmayeur?
July highs reach 75 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.
- 04
Do I need dry socks for the cold sections of Gran Trail Courmayeur?
Lows near 32 degrees F. Wet feet plus cold is how trench foot and numb toes start. Put a dry pair in every bag you will see after dark and warm your feet before you tape.
- 05
How many sock changes for Gran Trail Courmayeur?
Plan one at every foot stop you have access to, and carry one spare pair beyond that. 63 miles inside 28 hours is long enough that dry socks are faster than the five minutes they cost.
- 06
What goes in my vest for Gran Trail Courmayeur?
12.6 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.
- 07
How do I stop blisters at Gran Trail Courmayeur?
Start from the biggest threat on this course. 14,900 ft of cumulative descent. Nail beds and forefoot pay for all of it. 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.
- 08
What foot care kit should I pack for Gran Trail Courmayeur?
Beyond the standard kit, this course calls for powder and a moisture barrier, pretape for toes and heels, extra dry socks and a towel, vest foot kit you can use alone, light you can tape by, moleskin for pressure points. Sweat is the friction multiplier on this course.
- 09
What shoes work for Gran Trail Courmayeur?
75% trail / 20% dirt road / 5% paved at technicality 6/10 points toward Norda 055, Hoka Mafate X, Hoka Mafate X. 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 Gran Trail Courmayeur. Climbs, descents, heat, fueling, and cutoffs are the rest of it.