DOWNHILL SHEAR7,000 FT OF LOSS
Flagstaff, Arizona · June · 50K
Foot care for Flagstaff Extreme Big Pine 50K
Flagstaff Extreme Big Pine 50K is a descent race. Toes and nail beds pay first.
Threat matrix
What Flagstaff Extreme Big Pine 50K does to feet.
Every line below is computed from published course data or written by PR Run and labeled as such.
- Downhill shearMile 0.5 to 13 drops 4,750 ft at 7.2 percent average grade. Toes hit the front of the shoe, heels lift.Course data
- Heat and sweatJune highs reach 75 degrees F. Sweat saturates socks, skin softens, friction climbs.Course data
- Hours on feet31.1 miles inside a 12 hour limit. Every hour adds shear, swelling, and sock saturation.Course data
- Cold and numb toesLows near 30 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
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.
- FlagstaffMI 006:00
Eyes only
Named station on course.
- Eyes only. Feel for hot spots through the sock and keep moving.
- Flagstaff Extreme Big Pine 50K mile 6MI 608:09
Shoes off
6.2 mi since the last stop, 2,150 ft of descent into it, cutoff 2.4000000000000004 h.
- Shoes and socks off. Pat completely dry, fresh socks, powder if the last pair was soaked.
- Check toes and nail beds. 2,150 ft of descent came into this stop.
- Flagstaff Extreme Big Pine 50K mile 12MI 1209:39
Shoes off
6.2 mi since the last stop, 2,350 ft of descent into it, cutoff 4.800000000000001 h.
- Shoes and socks off. Pat completely dry, fresh socks, powder if the last pair was soaked.
- Check toes and nail beds. 2,350 ft of descent came into this stop.
- Flagstaff Extreme Big Pine 50K mile 19MI 1911:29
Socks and a look
6.2 mi since the last stop, 250 ft of descent into it, cutoff 7.199999999999999 h.
- Socks off. Check the pressure points and swap if the pair is wet.
- Flagstaff Extreme Big Pine 50K mile 25MI 2513:17
Socks and a look
6.3 mi since the last stop, cutoff 9.600000000000001 h, late race, feet already soft.
- Socks off. Check the pressure points and swap if the pair is wet.
- Finish ArizonaMI 3116:00
Eyes only
6.2 mi since the last stop, cutoff 12 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 Flagstaff Extreme Big Pine 50K.
Vest / pack
Crew bag
Drop bag
Kit deltas
What Flagstaff Extreme Big Pine 50K 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.
- 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 country climbs when Phoenix bakes below near mile 33. Plan foot work before the field splits.
- Surfaces: 85% trail / 15% dirt road. Match lugs and tape adhesion to the dominant surface.
- Air band 30°F to 75°F. Crew should carry dry socks and skin lube when heat or rain is in range.
- Cutoff 12 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
- Flagstaff Extreme Big Pine 50K mile 6MI 6
- Flagstaff Extreme Big Pine 50K mile 12MI 12
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
Flagstaff Extreme Big Pine 50K foot questions.
- 01
Where should I stop for foot care at Flagstaff Extreme Big Pine 50K?
Flagstaff Extreme Big Pine 50K mile 6 at mile 6.2, Flagstaff Extreme Big Pine 50K mile 12 at mile 12.4. 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 Flagstaff Extreme Big Pine 50K wrecks feet?
Mile 0.5 to 13 drops 4,750 ft at 7.2 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 Flagstaff Extreme Big Pine 50K?
June 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 Flagstaff Extreme Big Pine 50K?
Lows near 30 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 Flagstaff Extreme Big Pine 50K?
Plan one at every foot stop you have access to, and carry one spare pair beyond that. 31.1 miles inside 12 hours is long enough that dry socks are faster than the five minutes they cost.
- 06
How do I stop blisters at Flagstaff Extreme Big Pine 50K?
Start from the biggest threat on this course. Mile 0.5 to 13 drops 4,750 ft at 7.2 percent average grade. Toes hit the front of the shoe, heels lift. 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.
- 07
What foot care kit should I pack for Flagstaff Extreme Big Pine 50K?
Beyond the standard kit, this course calls for powder and a moisture barrier, pretape for toes and heels, extra dry socks and a towel, moleskin for pressure points. Sweat is the friction multiplier on this course.
- 08
What shoes work for Flagstaff Extreme Big Pine 50K?
85% trail / 15% dirt road at technicality 6/10 points toward Norda 055, Norda 001, Norda 001. 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 Flagstaff Extreme Big Pine 50K. Climbs, descents, heat, fueling, and cutoffs are the rest of it.