Longest unbroken top-flight run

Which club played the most consecutive seasons in the top flight?

Heroes Den Bosch played 55 consecutive top-flight seasons, from 1972-73 to 2026-27.

As above, without the games against foreign (Belgian) clubs. A season counts when the archive has games with a result.

#	Club	Seasons	Season
1	Heroes Den Bosch	55	1972-73 – 2026-27
2	Donar	41	1986-87 – 2026-27
3	Rotterdam City Basketball	36	1991-92 – 2026-27
4	BS Weert	35	1982-83 – 2016-17
5	Landstede Hammers	31	1996-97 – 2026-27
6	Den Helder	25	1981-82 – 2005-06
7	Flamingo’s Haarlem	21	1962-63 – 1982-83
7	ZZ Leiden	21	2006-07 – 2026-27
9	LALandlust Amsterdam	20	1973-74 – 1992-93
10	Punch Delft	19	1964-65 – 1982-83
10	ZZ Leiden	19	1967-68 – 1985-86
10	Aris Leeuwarden	19	2004-05 – 2022-23
13	Blue Stars Diemen	16	1960-61 – 1975-76
13	Amsterdam Basketball	16	1995-96 – 2010-11
15	Donar	13	1970-71 – 1982-83
16	LALandlust Amsterdam	12	1960-61 – 1971-72
16	RA(Racing) Agon Amsterdam	12	1961-62 – 1972-73
16	Rotterdam Zuid	12	1968-69 – 1979-80
19	BC Apollo Amsterdam	11	2012-13 – 2022-23
20	HAHerly Amsterdam	9	1960-61 – 1968-69
20	Orca’s Urk	9	1983-84 – 1991-92
20	Red Giants Meppel	9	1987-88 – 1995-96
20	Almere Pioneers	9	1998-99 – 2006-07
20	Magixx	9	2005-06 – 2013-14
20	Den Helder Suns	9	2017-18 – 2025-26
20	Basketbal Academie Limburg	9	2017-18 – 2025-26

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