HERO 01FIELD-NO. 01 · FIRST EDITION — SS26
Built for forty-two.
And for every kilometre that gets you there.
HERO 02Engineering proof
Foam, shank, geometry.
Every line argued for by one number — and the months before it.
HERO 03Watermark
42.195 km
The distance this shoe is for. Your time, your story.
00FIELD-NO. 01 · FIRST EDITION — SS26
The everyday
marathon shoe.
All forty-two kilometres of it.
MERIDIAN ／ MK.01. Built for the long buildup and the long day. Supercritical PEBA-X midsole, forged TPU shank, geometry decided by a single distance — and the months that get you to it.
FILE 01 ／ 1001Anatomy · the proof
Eight numbers.
Nothing else to discuss.
MASS234gUS M9
STACK HEIGHT38 / 30mmfore / rear
DROP8mm
SHANKForged TPU1.4 mm · midfoot
MIDSOLEPEBA-Xsupercritical · open-cell
ENERGY RETURN78.4%ISO 22675 bench
OUTSOLEContinentalall-rubber · 1.4 mm
INTENDED DISTANCE42.195kmand every step before
ALL VALUES MEASURED AT 20 °C ／ 50 % RH. SHANK STIFFNESS TESTED PER ISO 22675 (ANNEX C). MASS TOLERANCE ±3 g.
02Shank · forged TPU
A spine you
don’t feel.
A forged TPU shank embedded in the midfoot. 1.4 mm thick. Its job is to disappear at footstrike and quietly arrive on the other side of toe-off.
The shank does not lift you. It gives back what you put in, 78.4 %of it, on a vector you didn’t have to think about — even at kilometre thirty-two.
SCROLL TO EXPLODE
- STIFFNESSK = 8.6N·m/rad
- MATERIALTPU-Fforged · 64 Shore D
- THICKNESS1.4mm
03Foam · supercritical PEBA-X
Foam,
opened.
Supercritical PEBA-X expanded under 220 bar. What looks like a slab is an architecture of vacuums — thirty-one percent nitrogen by volume.
Open cells deform on contact, then snap. The shoe runs lighter the longer you stay on it.
DENSITY0.142g/cm³
CELL Ø (mean)184µm
N₂ VOLUME31%
REBOUND82% / ASTM D2632
TEMP RANGE−10 → 38°C
SCROLL TO COMPRESS
FIG. 03MIDSOLE ／ AT REST ⟶ COMPRESSION ／ SCROLL
“Foam fails politely. It returns most of what you give it, and the rest it returns as heat.”— MATERIALS NOTE 002
04Geometry · tuned for 42.195
Every line
argued for.
Every line on this shoe was decided by a forty-two-point-one-nine-five kilometre constraint — and the months of training that get you there. The rocker is patient. The waist is narrow because at kilometre thirty-two your foot will know.
HEEL BEVEL
8°
FOREFOOT ROCKER
18°
WAIST
84 mm
POSTING
0
05Gait cycle · the centerpiece
One stride,
in three movements.
PHASE 01 / 03HEEL STRIKE
GROUND CONTACT
0.242 s
VERTICAL OSCILLATION
8.1 cm
SHANK LOAD
+1.4°
FOAM COMPRESSION
44 %
PHASE 02 / 03MIDSTANCE
GROUND CONTACT
0.214 s
VERTICAL OSCILLATION
7.2 cm
SHANK LOAD
−5.2°
FOAM COMPRESSION
82 %
PHASE 03 / 03TOE-OFF
GROUND CONTACT
0.078 s
VERTICAL OSCILLATION
5.6 cm
SHANK LOAD
+14.0°
FOAM COMPRESSION
16 %
HEEL STRIKEMIDSTANCETOE-OFF
T+0 msT+214 msT+292 ms
06Energy · the vector
78.4 %
returned.
The remaining twenty-one-point-six percent is heat, sound, and the cost of forward motion. The shoe will never lift you. It will give back what you put in — step thirty thousand and step fifty-three thousand alike.
APEX TIME
T + 138 ms
ARC LENGTH
0.94 m
07Pace · the motif
Pace is the
only honest unit.
HEART RATE
156
BPM ／ ZONE 3
CADENCE
176
STEPS / MIN
SPLIT / 1 KM
00:00.0
MM:SS.t · TARGET 05:18
ONE-SEVENTY-SIX STEPS PER MINUTE. ONE FIFTY-SIX BEATS. FIVE MINUTES EIGHTEEN SECONDS PER KILOMETRE. HOLD THESE THREE NUMBERS UNTIL THE FORTY-SECOND.
CHANNELS RECORDED VIA HRM-PRO+ ／ GARMIN 265 ／ MERIDIAN FIELD
08Field · the one concession
The corral,
before the start.
START LINE ／ 05:42 LOCAL
FIELD-NO. 01 ／ AMSTERDAM ／ OCT 26
FRAME 014 / 240
ISO 800 ／ 1/30 ／ f/2.8
09Reserve · field-no. 01
First edition.
For your first — or your tenth.
MK.01 ships in a single first edition for the autumn season. Each pair is numbered on the tongue, finished by hand in Vimercate. The number on your shoe is the number on your bib.
RESERVE PAIR ／ €220SHIPS WORLDWIDE · 14 DAYS · NUMBERED + CERTIFIED
MERIDIAN ／ FIELD 01SS · 26
02955
M
W
X
RUNNER
DISTANCE
42.195
FINISH
YOURS
SAFETY PIN ×4DO NOT FOLD