M-21

Place road Q2872982
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M-21

Summary

M-21 is a road[1]. M-21 ranks in the top 3% of road entities by monthly Wikipedia readership (1 views/month).[2]

Key Facts

  • M-21 is located in Community of Madrid[3].
  • M-21 is in the country of Spain[4].
  • M-21's traffic sign is recorded as ESP M-21.svg[5].
  • M-21's transport network is recorded as Spanish national road network[6].
  • M-21's image is recorded as Madrid (Spain) (39792471932) (cropped) M-21.jpg[7].
  • M-21's instance of is recorded as road[8].
  • M-21's VIAF cluster ID is recorded as 146806088[9].
  • M-21's Commons category is recorded as M-21 (highway in Spain)[10].
  • M-21's coordinate location is recorded as {'lat': 40.440291666667, 'lon': -3.5706416666667}[11].
  • M-21's road number is recorded as M-21[12].
  • M-21's length is recorded as {'unit': 'Q828224', 'amount': '+6.5'}[13].
  • M-21's Google Knowledge Graph ID is recorded as /g/12384z6p[14].
  • M-21's connects with is recorded as M-40[15].
  • M-21's connects with is recorded as M-50[16].

Body

Geography

M-21 is in the country of Spain[4]. M-21 is located in Community of Madrid[3].

Physical Characteristics

M-21's length is recorded as {'unit': 'Q828224', 'amount': '+6.5'}[13].

Designation and Status

M-21's instance of is recorded as road[8].

Why It Matters

M-21 ranks in the top 3% of road entities by monthly Wikipedia readership (1 views/month).[2]

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). M-21. Retrieved May 3, 2026, from https://4ort.xyz/entity/m-21
MLA “M-21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/m-21.
BibTeX @misc{4ortxyz_m-21_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{M-21}}, year = {2026}, url = {https://4ort.xyz/entity/m-21}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): M-21 — https://4ort.xyz/entity/m-21 (retrieved 2026-05-03)

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