In English : the 37 railway gauges in the world in 1925.

Differences between railway gauges has been the worst of all catastrophes that happened to railways. At the beginning each country, and even each line between two towns, was decided with no concertation with other towns of countries, people commonly thinking that railways would never develop enough for reaching faraway distances and faraway continents. When, near the end of 19th century, most of the industrialized countries had standardised their railway gauges to the famous 1435 mm (4′ 8″ 1/2) gauge said to be “standard gauge”. But some of these countries, building colonial empires, made the economical choice of narrow gauges, often different for each of the colonies of one continent, this destroying any further international development for the African, South America, or Asiatic growing countries. Today, nothing, or so few, has changed: most of the economic problems of these continents are due to the “gauge breaks” existing here and there in these continents.

GAUGE (MM)	COUNTRY	LENGTH OF TRACKS (KM)
1,878	Argentine	22.760
1,878	Ceylan	1.000
1,878	Chile	103
1,878	India	29.500
1.670	Portugal	3.900
1,67	Spain	7.500
1.650	Chile	1.080
1.644	Chile	17
1.600	Ireland	4.500
1.600	South Australia	1.800
1.600	Victoria Australia	6.600
1.600	Brazil	1.650
1.525	China	6.000
1,525	Finland	4.100
1.525	Latvia	1.480
1,525	Panama	85
1.525	Roumania	1.103
1,525	Russia	31.500
1.525	Ukrainia	10.700
1.448	China	560
1.448	United States of America	304
1.448	Austria	4.460
1.435	Algeria	2.050
1.435	Germany	68.500
1.435	Argentine	3.150
1.435	Australia	1.690
1.435	Belgium	4.850
1.435	Brazil	13
1.435	Bulgaria	2.225
1.435	Canada	49.387
1.435	Chile	689
1.435	China	3.587
1.435	Korea	1.860.
1.435	Cuba	3.675
1.435	Danemark	3.720
1.435	Egypt	2.960
1.435	Spain	93
1.435	United States of America	396.650
1.435	France	43.400
1.435	United Kingdom	32.112
1.435	Greece	1.250
1.435	British Guyana	97
1.435	Netherlands	4.300
1.435	Hungaria	19.000
1.435	Dutch Oriental India	200
1.435	Italy	18.400
1.435	Jamaica	317
1.435	Japan	38
1.435	Latvia	450
1.435	Luxembourg	317
1.435	Maurice	208
1.435	Mesopotamia	295
1.435	Norway	2.050
1.435	New South Wales	8.077
1.435	Palestine	550
1.435	Paraguay	255
1.435	Peru	1.630
1.435	Poland	16.200
1.435	Porto Rico	21
1.435	Roumanie	13.750
1.435	Siam	960
1.435	Sweden	9.000
1.435	Sweden	6.400
1.435	Czechoslovaquia	13.600
1.435	Tunisia	1.090
1.435	Turkey	1.300
1.435	Uruguay	2.500
1.435	Yugoslavia	2.500
1.372	United Kingdom	3
1.300	Brazil	10
1.270	Chile	127
1.220	United Kingdom	11
1.190	Dutch Oriental India	14
1.118	Spain	22
1.090	Sweden	82
1.067	South Africa	14.500
1.067	British Central Africa	280
1.067	British East Africa	150
1.067	Angola	600
1.067	Australia	1.100
1.067	South Australia	1.930
1.067	West Australia	5.550
1.067	Bechuanaland & Rhodesia	2.450
1.067	Belgium	490
1.067	Cape	328
1.067	Chile	435
1.067	Colombia	18
1.067	Belgian Congo	750
1.067	Costa Rica	520
1.067	Gold Coast	580
1.067	Egypt	220
1.067	British Guyana	30
1.067	Dutch Oriental India	5.000
1.067	Equator	460
1.067	United Kingdom + Jersey + Man	24
1.067	Hungaria	540
1.067	Japan	11.600
1.067	Machuanaland	1.150
1.067	Mozambique	832
1.067	Nicaragua	270
1.067	Nigeria	1.580
1.067	New-Zealand	4.820
1.067	Norway	1.050
1.067	New South Wales	58
1.067	Peru	26
1.067	Philippines	1.480
1.067	Queensland	9.500
1.067	Russia	47
1.067	Soudan	2.400
1.067	Sweden	530
1.067	Tasmania	1.300
1.067	Newfoundland	1.460
1.067	Venezuela	320
1.050	Palestine	510
1,05	Algeria	1.320
1,05	Syra	147
1.000	Abyssinisa	375
1.000	British East Africa	150
1.000	Algeria	1.320
1.000	Germany	1.800
1.000	Angola	360
1.000	Annam	2.150
1.000	Argentine	11.800
1.000	Austria	215
1.000	Belgium	3.400
1.000	Bolivia	560
1.000	Bornéo	200
1.000	Brazil	30.100
1.000	Cameroun	655
1.000	Chile	2.400
1.000	China	240
1.000	Colombia	550
1.000	Danemark	410
1.000	Spain	5.830
1.000	France	6.900
1.000	Greece	1.030
1.000	Dutch Guyana	175
1.000	Hungaria	48
1.000	Inde	25.150
1.000	Italy	342
1.000	Luxembourg	500
1.000	Madagascar	1.000
1.000	Malaysia	1.950
1.000	Mesopotamia	1.000
1.000	Mexico	26
1.000	Norway	26
1.000	New South Wales	29
1.000	Ouganda	1.100
1.000	Peru	120
1.000	Porto Rico	510
1.000	Portugal	400
1.000	Réunion	128
1.000	Roumania	317
1.000	Russia	590
1.000	Senegal	800
1.000	Siam	1.320
1.000	French Soudan	1.920
1.000	Sweden	970
1.000	Tanganyika	1.745
1.000	Togo	330
1.000	Tunisia	2.600
1.000	Vénézuela	77
950	Italy
914	Colombia	923
914	Cuba	82
914	United States of America	2.056
914	United Kingdom	16
914	Guatemala	1.539
914	Ireland	872
914	Mexico	2.893
914	Man	104
914	Peru	490
914	Salvador	160
914	Venezuela	37
900	Germany	14
900	Austria	13
900	Portugal	64
891	Sweden	?
826	Angleterre	?
800	United Kingdom	8
800	Sweden	56
800	Sweden	51
785	Germany	86
785	Finland	6
762	Barbades	38
762	Brazil	726
762	British East Africa	173
762	Cape	172
762	Ceylan	187
762	Chile	1.254
762	Chypre	122
762	United Kingdom	29
762	Inde	5.400
762	Japan	343
762	Mesopotamia	93
762	Mexico	53
762	Nigeria	229
762	San Domingue	99
762	Sierra Leone	550
762	South Africa	896
762	Victoria	195
760	Austria	635
760	Bulgaria	51
760	Poland	70
760	Roumanie	744
760	Yugoslavia	46
750	Algeria	245
750	Germany	1.371
750	Argentine	163
750	Belgicain Congo	400
750	Dutch East Indies	510
750	Estonie	338
750	Egypt	1.464
750	Spain	104
750	Finland	115
750	Hungaria	14
750	Latvia	280
750	Norway	83
750	Poland	925
750	Roumania	301
750	Sweden	14
750	Tanganyika	14
724	United Kingdom	14
711	United Kingdom	5
700	Luxembourg	264
700	Poland	400
686	United Kingdom	?
610	Inde	974
610	Japan	42
610	Mexico	34
610	Tasmania	66
610	South Africa	898
610	Venezuela	218
603	Germany	93
603	Brazil	1.843
603	Chile	61
603	Finland	10
603	Peru	80
603	Sweden	133
600	Algeria	54
600	Bulgaria	317
600	Cameroun	54
600	Dutch Oriental India	120
600	France	224
600	United Kingdom	99
600	Poland	400
600	Roumania	301
600	Tanganyika	93
457	United Kingdom	8
381	United Kingdom	11