Site report · CrossFit (licensed box)

CROSSFIT SILVER

IMMEUBLE LE POSEIDON 10 RUE DU CHATEAU D'EAU 78360 MONTESSON · Île-de-France
83.6
/ 100
Go
Location only — excludes rent, fit-out, lease terms and the price of the business. 80% of the scoring weight was measurable here.

The site

Opened
2017-10-01
Activity
CrossFit / Functional Training
Status
active · operating gym floor
Coordinates
48.90871, 2.15843

Within 3 km — gym floors filled, other sports hollow

500 m1 km2 km3 kmGIGAFITGIGAFITAVELOAVELOL' ORANGE BLEUEL' ORANGE BLEUEWILD CLUB STUDIOWILD CLUB STUDIOJNG VESINETJNG VESINETFIT ET VOUS LE VESINETFIT ET VOUS LE VESINETBODYHITBODYHITBODY ADDICTIONBODY ADDICTION© OpenStreetMap contributors
9 gym floors, 7 other sports sites. The eight nearest gyms are labelled. Rings at 500 m, 1 km, 2 km and 3 km; north is up.

Strengths & weaknesses — by weighted effect

▲ Saturation 100 — 1 club / 48,972 residents = 2.04 per 100k against 11.01 nationally
▲ Capture 84 — 9,205 residents + 2,594 workers, demand within 2 km against every competitor within 3 km
▲ Competition 88 — 0 genuine gym floors and 0 other sports sites within 500 m, weighted by substitutability and price tier
Nothing scores below the middle of its range here.

How the score was reached — seven parameters, five measured separately at 500 m and 2 km

ParameterWhere MeasuredScore How it was arrived at
Catchment 60
weight 20%
 500 m 3,492 people 61 2,078 aged 18-64 + 1,414 workers = 3,492 over 0.79 km2 = 4,446/km2
2 km 39,799 people 60 30,143 aged 18-64 + 9,656 workers = 39,799 over 12.57 km2 = 3,167/km2
Competition 88
weight 15%
 500 m 0.00 wt 100 0 genuine gym floors and 0 other sports sites within 500 m, weighted by substitutability and price tier
2 km 1.10 wt 80 1 genuine gym floor and 2 other sports sites within 2 km, weighted by substitutability and price tier
Capture 84
weight 20%
 500 m 3,030 people 79 2,011 residents + 1,019 workers, demand within 500 m against every competitor within 3 km
2 km 11,799 people 86 9,205 residents + 2,594 workers, demand within 2 km against every competitor within 3 km
Saturation 100
weight 15%
 500 m not measured — catchment of 3,446 residents is below the 10,000 needed for a density measure to mean anything — one club would move it by 2.6 LQ
2 km LQ 0.19 100 1 club / 48,972 residents = 2.04 per 100k against 11.01 nationally
Fit —
weight 10%
 unit not measured — no floor area recorded for this unit
Rental —
weight 10%
 unit not measured — no rent or no floor area recorded
Income 100
weight 10%
 500 m 1.38× 100 30,850 EUR against 22,380 nationally, median of 2 IRIS within 500 m
2 km 1.43× 100 32,090 EUR against 22,380 nationally, median of 19 IRIS within 2 km
Each parameter scores 0–100 on a stated line between named breakpoints, then the seven combine on their weights — renormalised over whatever was measurable, so a missing parameter dilutes nothing rather than counting as zero.

Competitive field — every active gym and other sports site within 3 km

BandGym floors Other sportsMCI weight
within 500 m0 0 —
500 m – 1 km1 0 0.70
1 – 2 km0 2 0.40
2 – 3 km8 5 8.46
Within 3 km9 7 9.6 total
Each site is discounted by how substitutable its activity is for a gym and how far its price tier sits from a mid-market club — so 9 gym floors and 7 other sports sites weigh 9.6, not 16.

Gym floors, 500 m – 1 km — 1

0.58 GIGAFIT GigaFit

Gym floors, 2 – 3 km — 8

2.04 AVELO
2.12 L' ORANGE BLEUE L'Orange Bleue
2.14 WILD CLUB STUDIO
2.43 JNG VESINET
2.6 FIT ET VOUS LE VESINET
2.67 BODYHIT Bodyhit
2.89 BODY ADDICTION Body Addiction
2.97 BASIC FIT Basic-Fit

Other sports sites — 7 within 3 km, discounted by activity

1.9 LA MARINE NATIONALE - CENTRE MARINE DE HOUILLES COMMANDANT MILLE Other / Unclassified
1.97 CENTRE AQUATIQUE DE LA PLAINE Swimming / Aquatic
2.01 MAISON DES ARTS MARTIAUX Boxing / Martial Arts
2.16 GYMNASE FRANCO BRONDANI Multi-sport Complex
2.69 AQUALOFT Swimming / Aquatic
2.73 CENTRE SPORTIF VOLTAIRE Multi-sport Complex
2.92 CROSSFIT ASLAK CrossFit / Functional Training

Competition since opening — gyms within 1 km, by the year they opened

1 when it opened, 2017-10-01 → 2 today, 1 arrived since
2020+1
1 rival(s) within 1 km when this club opened, 2 now. The forecast uses the founding count: it measured better than averaging the field over the club's life (LOOCV 0.091 vs 0.106).

Access — straight-line distance, GTFS

Nearest rail
Houilles - Carrières-sur-Seine — 2340 m
Nearest bus
Le Montoir — 28 m
Counted footfall
HOUILLES — 2361 m, 5,813,952 validations a year (RATP)
Straight-line, not travel time: no free routing service covers France at this volume, so a stop 300 m away across a railway line reads the same as one 300 m along the street.

Catchment — INSEE 200 m population grid, Filosofi 2021

RingResidents Per km²Median age Adults 18–64Share of residents
0.5 km 3,446 4,388 41.7 2,078 60%
1.0 km 14,921 4,750 39.7 9,248 62%
2.0 km 48,972 3,897 39.7 30,143 62%
3.0 km 123,584 4,371 39.1 75,710 61%
Adults 18–64 is the span members come from. A median age alone does not separate a student quarter from a family suburb, and those are not the same market.

Age profile — residents within 2 km

0–32,1834%
4–51,2353%
6–103,3417%
11–174,95310%
18–244,1659%
25–398,78218%
40–5411,10223%
55–646,09412%
65–795,18511%
80+1,9164%
Working-age brackets in blue. 48,956 residents within 2 km.

Household income — INSEE Filosofi 2021

Median
€33,420 a year, per consumption unit
Poorest tenth
below €17,570
Richest tenth
above €54,560
Spread
×3.1 between them · Gini 0.25
Poverty rate
5.0% of households below 60% of the national median
Published at iris level (IRIS 784180102). An IRIS is a neighbourhood of roughly 2,000 people; a commune can be a whole town. The level travels with the figure, so a town's median is never read as this street's.

The establishment — INSEE Sirene

Legal name
SILVER TRAINING
SIREN
832260053 the company
SIRET
83226005300018 this establishment
Company founded
2017-10-01
This site opened
2017-10-01
Activity code
93.12Z
Head office
yes — this is the registered siège
Employees
0 employees
Sources
brand_site

Officers — company representatives on file

Legal representatives, not shareholders. France closed public access to the beneficial-ownership registry in July 2024, so who owns the company is not obtainable from open data.

Filed accounts — INPI, the keyed annual accounts

Revenue
not filed
Net result
not filed
No keyed accounts in INPI's feed for this company. Absence means unfiled, not zero — most small French companies file late or not at all.
What this is. The Location Score is model output, computed from open data; it is not a measured fact and not a valuation. Registry facts — name, SIRET, NAF, address, opening date, officers, filed revenue — come from INSEE Sirene and the Ministère des Sports facility census. Population, age profile and income are INSEE (Filosofi 2021, 200 m grid and IRIS). Competitors are the active, genuinely-operating gym floors in this database. Distances are straight-line, not travel time.
Location Score model 3.1.0, computed 2026-10-17.
Generated 18 October 2026, 05:27 UTC · siret:83226005300018
Sources : INSEE, Sirene (www.insee.fr), données mises à jour le 2026-10-18 · INPI, Registre national des entreprises (stock du 2026-03-04, API au 2026-10-18) · Ministère des Sports, Data ES (2026-10-17) · INSEE, Filosofi 2021 (carreaux 200 m, IRIS) et BPE 2025 · IGN, Contours IRIS 2026 · OpenStreetMap contributors (ODbL). Licence Ouverte / Etalab 2.0 sauf mention contraire.