---
title: "CS ADR-DSN.B.035 Length of runway and declared distances — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "The length of a runway should provide declared distances adequate to meet the operational requirements for the aircraft which the runway is intended to…"
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-b-runways/cs-adr-dsn-b-035"
---

# CS ADR-DSN.B.035 Length of runway and declared distances

Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7 · Regulation (EU) No 139/2014 · EAR revision 13 Mar 2026

Official sources: [EASA Easy Access Rules (opens in a new tab)](https://www.easa.europa.eu/en/document-library/easy-access-rules/easy-access-rules-aerodromes) · [EUR-Lex 2014/139 (opens in a new tab)](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32014R0139)

IR Implementing rule

## CS ADR-DSN.B.035 Length of runway and declared distances

(a) The length of a [runway](https://avioverse.aero/glossary/easa/runway) should provide [declared distances](https://avioverse.aero/glossary/easa/declared-distances) adequate to meet the operational requirements for the [aircraft](https://avioverse.aero/glossary/easa/aircraft) which the runway is intended to serve.

(b) The following distances should be calculated to the nearest metre for each runway:

(1) Take-off run available;

(2) Take-off distance available;

(3) Accelerate-stop distance available; and

(4) [Landing distance available](https://avioverse.aero/glossary/easa/landing-distance-available).

(c) The length of the runway is measured from the start of the runway pavement or where a transverse stripe [marking](https://avioverse.aero/glossary/easa/marking) is provided to indicate [threshold](https://avioverse.aero/glossary/easa/threshold) displacement, at the inner edge of the transverse stripe across the runway.

\[Issue: ADR-DSN/3]

IR · CS ADR-DSN.B.035 — Regulation (EU) No 139/2014 · ED Decision 2016/027/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

[All rules in CHAPTER B — RUNWAYS](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-b-runways)

Consolidated from the EASA Easy Access Rules (revision 13 Mar 2026, extracted 2 Nov 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.