Horizontal curvature for ELR BRY is based on the digitised notional centre-line, calculated in 100 metre sections. The average radius computation is weighted, however this should be treated as indicative only. The computed minimum and maximum radii are shown for completeness, and often report a much tighter radius than the physical railway. Radii calculations are influenced by the digitisation quality, and often produce inaccurate values at the extremities of the ELR, areas of tracks divergence, and locations of very tight curvature.
| Mileage | Schematic | Average Radius | Radius Range | Features |
|---|---|---|---|---|
| 0M -781y - 0M -770y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 0M -770y - 0M -660y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 0M -660y - 0M -550y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 0M -550y - 0M -440y | 🔴-🟠🟠🟠-🟠 | Tight (357 m) | 325 m → 385 m | |
| 0M -440y - 0M -330y | 🟣-🟣🟣🟣-🟣 | Moderate (1,828 m) | ||
| 0M -330y - 0M -220y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 0M -220y - 0M -110y | 🟡-🟡🟡🟡-🟡 | Moderate (760 m) | ||
| 0M -110y - 0M 0000y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (638 m) | ||
| 0M 0000y - 0M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 0M 0110y - 0M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Cardiff West Jn | |
| 0M 0220y - 0M 0330y | ⭕-🟠🟠🟠-🔵 | Moderately Tight (638 m) | 212 m → 2,768 m | |
| 0M 0330y - 0M 0440y | ⭕-🔴🔴🔴-🟡 | Very Tight (277 m) | 149 m → 782 m | |
| 0M 0440y - 0M 0550y | ⭕-🔴🔴🔴-🟡 | Very Tight (297 m) | 171 m → 886 m | |
| 0M 0550y - 0M 0660y | ⭕-🔴🔴🔴-🟠 | Very Tight (283 m) | 192 m → 418 m | Radyr Branch Jn |
| 0M 0660y - 0M 0770y | ⭕-🔴🔴🔴-🔴 | Very Tight (242 m) | 177 m → 291 m | |
| 0M 0770y - 0M 0880y | 🔴-🟠🟠🟠-🟡 | Tight (363 m) | 277 m → 777 m | |
| 0M 0880y - 0M 0990y | ⭕-🔴🔴🔴-🟡 | Very Tight (231 m) | <100 m → 1,054 m | |
| 0M 0990y - 0M 1100y | 🟠-🟠🟠🟠-🟣 | Moderately Tight (742 m) | 450 m → 1,829 m | Penarth Curve South Jn |
| 0M 1100y - 0M 1210y | 🔴-🟡🟡🟡-🟣 | Moderate (820 m) | 297 m → 1,843 m | |
| 0M 1210y - 0M 1320y | 🟠-🟡🟡🟡-🟣 | Moderate (755 m) | 555 m → 1,261 m | |
| 0M 1320y - 0M 1430y | 🟡-🟣🟣🟣-🔵 | Moderate (1,476 m) | 784 m → 2,714 m | |
| 0M 1430y - 0M 1540y | 🟠-🟠🟠🟠-🟣 | Moderately Tight (654 m) | 384 m → 1,302 m | GRANGETOWN |
| 0M 1540y - 0M 1650y | 🟡-🟣🟣🟣-🟢 | Moderate (1,639 m) | 925 m → 7,440 m | GRANGETOWN |
| 0M 1650y - 1M 0000y | 🔴-🟠🟠🟠-⚫ | Tight (425 m) | 246 m → 24,890 m | GRANGETOWN |
| 1M 0000y - 1M 0110y | 🔴-🟠🟠🟠-🟣 | Tight (483 m) | 249 m → 1,822 m | |
| 1M 0110y - 1M 0220y | 🟠-🟠🟠🟠-🔵 | Moderately Tight (580 m) | 388 m → 2,752 m | |
| 1M 0220y - 1M 0330y | 🟠-🟠🟠🟠-🔵 | Moderately Tight (734 m) | 391 m → 4,185 m | |
| 1M 0330y - 1M 0440y | 🔵-🔵🔵🔵-🟢 | Flat (4,235 m) | 2,390 m → 14,541 m | |
| 1M 0440y - 1M 0550y | 🟢-🟢🟢🟢-🟢 | Very Flat (13,096 m) | ||
| 1M 0550y - 1M 0660y | 🟢-🟢🟢🟢-🟢 | Very Flat (19,060 m) | ||
| 1M 0660y - 1M 0770y | 🟢-🟢🟢🟢-🟢 | Very Flat (17,208 m) | ||
| 1M 0770y - 1M 0880y | 🔴-🟠🟠🟠-🟡 | Moderately Tight (597 m) | 325 m → 1,023 m | |
| 1M 0880y - 1M 0990y | 🟡-🟣🟣🟣-🔵 | Moderate (1,837 m) | 1,103 m → 3,616 m | |
| 1M 0990y - 1M 1100y | 🟡-🔵🔵🔵-🔵 | Moderately Flat (2,091 m) | 759 m → 4,604 m | River Elai Viaduct |
| 1M 1100y - 1M 1210y | 🟠-🟣🟣🟣-🔵 | Moderate (1,269 m) | 419 m → 2,076 m | River Elai Viaduct |
| 1M 1210y - 1M 1320y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (600 m) | 482 m → 766 m | |
| 1M 1320y - 1M 1430y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (513 m) | 382 m → 881 m | |
| 1M 1430y - 1M 1540y | 🟠-🟠🟠🟠-🟡 | Tight (483 m) | 354 m → 773 m | |
| 1M 1540y - 1M 1650y | 🟠-🟡🟡🟡-🟣 | Moderate (1,048 m) | 606 m → 1,745 m | |
| 1M 1650y - 2M 0000y | 🟠-🟡🟡🟡-🟣 | Moderate (1,018 m) | 519 m → 1,567 m | |
| 2M 0000y - 2M 0110y | 🟠-🟡🟡🟡-🟡 | Moderate (792 m) | 503 m → 1,200 m | |
| 2M 0110y - 2M 0220y | 🔴-🟠🟠🟠-⚪ | Moderately Tight (535 m) | 328 m → Straight | |
| 2M 0220y - 2M 0330y | 🟢-🟢🟢🟢-🟢 | Very Flat (8,940 m) | 6,944 m → 13,987 m | |
| 2M 0330y - 2M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 2M 0440y - 2M 0550y | 🟠-🟣🟣🟣-⚫ | Moderate (1,989 m) | 739 m → 20,485 m | |
| 2M 0550y - 2M 0660y | ⭕-🔴🔴🔴-🟠 | Very Tight (284 m) | 189 m → 740 m | Cogan Jn |
| 2M 0660y - 2M 0770y | ⭕-⭕⭕⭕-🟡 | Extremely Tight (215 m) | 101 m → 799 m | |
| 2M 0770y - 2M 0880y | ⭕-🔴🔴🔴-🟢 | Very Tight (264 m) | 100 m → 9,009 m | COGAN |
| 2M 0880y - 2M 0990y | ⭕-🔴🔴🔴-🟠 | Very Tight (253 m) | 159 m → 555 m | COGAN |
| 2M 0990y - 2M 1100y | ⭕-🔴🔴🔴-🟠 | Very Tight (284 m) | 162 m → 687 m | |
| 2M 1100y - 2M 1210y | 🔴-🟠🟠🟠-🟠 | Tight (364 m) | 239 m → 656 m | |
| 2M 1210y - 2M 1320y | ⭕-🟠🟠🟠-🟢 | Moderately Tight (554 m) | 142 m → 14,531 m | |
| 2M 1320y - 2M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 2M 1430y - 2M 1540y | 🟠-🟣🟣🟣-🟢 | Moderate (1,638 m) | 474 m → 13,127 m | |
| 2M 1540y - 2M 1650y | ⭕-🔴🔴🔴-🟡 | Very Tight (295 m) | 165 m → 793 m | Cogan Tunnel |
| 2M 1650y - 3M 0000y | 🔴-🟠🟠🟠-🟣 | Moderately Tight (667 m) | 292 m → 1,777 m | Cogan Tunnel |
| 3M 0000y - 3M 0110y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (721 m) | 464 m → 938 m | Cogan Tunnel |
| 3M 0110y - 3M 0220y | ⭕-🔴🔴🔴-🟠 | Very Tight (343 m) | 176 m → 611 m | Cogan Tunnel |
| 3M 0220y - 3M 0330y | 🔴-🟠🟠🟠-🟣 | Moderately Tight (516 m) | 296 m → 1,361 m | |
| 3M 0330y - 3M 0440y | 🟡-🔵🔵🔵-🟢 | Moderately Flat (2,179 m) | 941 m → 9,804 m | |
| 3M 0440y - 3M 0550y | ⭕-🟠🟠🟠-🔵 | Moderately Tight (518 m) | 148 m → 4,146 m | |
| 3M 0550y - 3M 0660y | 🔴-🟠🟠🟠-🟠 | Moderately Tight (532 m) | 237 m → 731 m | |
| 3M 0660y - 3M 0770y | 🟠-🟡🟡🟡-🔵 | Moderate (1,197 m) | 674 m → 2,810 m | |
| 3M 0770y - 3M 0880y | 🟢-🟢🟢🟢-🟢 | Very Flat (8,720 m) | EASTBROOK | |
| 3M 0880y - 3M 0990y | 🔵-🟢🟢🟢-⚫ | Very Flat (6,041 m) | 3,887 m → 27,898 m | EASTBROOK |
| 3M 0990y - 3M 1100y | 🟡-🟣🟣🟣-🟢 | Moderate (1,733 m) | 1,191 m → 8,535 m | |
| 3M 1100y - 3M 1210y | 🟡-🔵🔵🔵-🟢 | Flat (3,434 m) | 1,060 m → 16,570 m | |
| 3M 1210y - 3M 1320y | 🟢-🟢🟢🟢-⚪ | Very Flat (9,897 m) | 5,891 m → Straight | |
| 3M 1320y - 3M 1430y | 🟢-🟢🟢🟢-⚪ | Very Flat (16,192 m) | 8,730 m → Straight | |
| 3M 1430y - 3M 1540y | 🟢-🟢🟢🟢-🟢 | Very Flat (12,693 m) | ||
| 3M 1540y - 3M 1650y | ⚫-⚪⚪⚪-⚪ | Straight | 30,685 m → Straight | |
| 3M 1650y - 4M 0000y | 🟢-🟢🟢🟢-🟢 | Very Flat (7,974 m) | 5,235 m → 12,632 m | |
| 4M 0000y - 4M 0110y | 🔵-🟢🟢🟢-🟢 | Very Flat (5,807 m) | 3,275 m → 10,952 m | |
| 4M 0110y - 4M 0220y | 🟣-🔵🔵🔵-🟢 | Flat (3,308 m) | 1,481 m → 6,986 m | |
| 4M 0220y - 4M 0330y | 🔵-🔵🔵🔵-🟢 | Flat (4,970 m) | 3,628 m → 5,934 m | |
| 4M 0330y - 4M 0440y | 🟠-🟡🟡🟡-🟣 | Moderate (965 m) | 444 m → 1,485 m | DINAS POWYS |
| 4M 0440y - 4M 0550y | 🟠-🟣🟣🟣-⚪ | Moderate (1,570 m) | 587 m → Straight | DINAS POWYS |
| 4M 0550y - 4M 0660y | 🔵-🟢🟢🟢-⚫ | Very Flat (9,741 m) | 2,076 m → 43,410 m | |
| 4M 0660y - 4M 0770y | 🟢-🟢🟢🟢-🟢 | Very Flat (11,998 m) | 9,229 m → 19,745 m | |
| 4M 0770y - 4M 0880y | 🔴-🟡🟡🟡-🟣 | Moderate (893 m) | 298 m → 1,681 m | |
| 4M 0880y - 4M 0990y | 🟡-🟣🟣🟣-🔵 | Moderate (1,636 m) | 1,117 m → 2,992 m | |
| 4M 0990y - 4M 1100y | 🔵-🟢🟢🟢-⚪ | Very Flat (7,198 m) | 3,020 m → Straight | |
| 4M 1100y - 4M 1210y | 🟢-🟢🟢🟢-🟢 | Very Flat (7,618 m) | 5,054 m → 14,427 m | |
| 4M 1210y - 4M 1320y | 🟢-⚫⚫⚫-⚪ | Extremely Flat (43,068 m) | 6,168 m → Straight | |
| 4M 1320y - 4M 1430y | 🟢-🟢🟢🟢-🟢 | Very Flat (8,144 m) | 8,074 m → 8,226 m | |
| 4M 1430y - 4M 1540y | 🟢-⚫⚫⚫-⚪ | Extremely Flat (20,779 m) | 9,223 m → Straight | |
| 4M 1540y - 4M 1650y | 🔵-🟢🟢🟢-🟢 | Very Flat (5,577 m) | 4,641 m → 8,647 m | |
| 4M 1650y - 5M 0000y | 🔵-🟢🟢🟢-🟢 | Very Flat (6,317 m) | 2,800 m → 13,426 m | |
| 5M 0000y - 5M 0110y | 🟢-🟢🟢🟢-🟢 | Very Flat (10,620 m) | ||
| 5M 0110y - 5M 0220y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (35,175 m) | ||
| 5M 0220y - 5M 0330y | 🔵-🔵🔵🔵-🟢 | Flat (4,448 m) | 3,908 m → 5,087 m | |
| 5M 0330y - 5M 0440y | 🟢-🟢🟢🟢-🟢 | Very Flat (6,871 m) | ||
| 5M 0440y - 5M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 5M 0550y - 5M 0660y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (20,883 m) | ||
| 5M 0660y - 5M 0770y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,807 m) | 1,755 m → 4,224 m | |
| 5M 0770y - 5M 0880y | 🔵-🔵🔵🔵-🟢 | Flat (4,361 m) | 2,977 m → 5,782 m | |
| 5M 0880y - 5M 0990y | 🟠-🟡🟡🟡-🔵 | Moderate (761 m) | 406 m → 2,181 m | |
| 5M 0990y - 5M 1100y | 🟠-🟠🟠🟠-🟠 | Tight (379 m) | 354 m → 465 m | |
| 5M 1100y - 5M 1210y | ⭕-🔴🔴🔴-🟠 | Very Tight (350 m) | 174 m → 509 m | |
| 5M 1210y - 5M 1320y | 🔴-🟠🟠🟠-🟡 | Moderately Tight (536 m) | 289 m → 1,052 m | |
| 5M 1320y - 5M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 5M 1430y - 5M 1540y | 🟢-🟢🟢🟢-🟢 | Very Flat (6,923 m) | ||
| 5M 1540y - 5M 1650y | 🔴-🟠🟠🟠-🟣 | Moderately Tight (554 m) | 279 m → 1,952 m | |
| 5M 1650y - 6M 0000y | ⭕-🔴🔴🔴-🟠 | Very Tight (335 m) | 185 m → 590 m | Barry Docks Line Jn |
| 6M 0000y - 6M 0110y | 🔴-🟠🟠🟠-🟠 | Tight (361 m) | 255 m → 674 m | |
| 6M 0110y - 6M 0220y | 🟠-🔵🔵🔵-🟢 | Moderately Flat (2,203 m) | 666 m → 10,914 m | CADOXTON |
| 6M 0220y - 6M 0330y | ⭕-🟡🟡🟡-🟢 | Moderate (1,199 m) | 197 m → 11,499 m | CADOXTON |
| 6M 0330y - 6M 0440y | 🟠-🟣🟣🟣-⚪ | Moderate (1,619 m) | 645 m → Straight | Barry Docks Low Level Jn |
| 6M 0440y - 6M 0550y | 🟢-🟢🟢🟢-🟢 | Very Flat (8,144 m) | ||
| 6M 0550y - 6M 0660y | 🟡-🟣🟣🟣-🟢 | Moderate (1,727 m) | 954 m → 10,849 m | |
| 6M 0660y - 6M 0770y | 🟠-🟡🟡🟡-🔵 | Moderate (782 m) | 453 m → 2,400 m | |
| 6M 0770y - 6M 0880y | 🟠-🟣🟣🟣-🔵 | Moderate (1,316 m) | 392 m → 4,224 m | |
| 6M 0880y - 6M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 6M 0990y - 6M 1100y | 🟢-🟢🟢🟢-⚫ | Very Flat (16,697 m) | 10,422 m → 26,715 m | |
| 6M 1100y - 6M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 6M 1210y - 6M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 6M 1320y - 6M 1430y | 🔴-🟠🟠🟠-🟣 | Moderately Tight (704 m) | 323 m → 1,307 m | |
| 6M 1430y - 6M 1540y | 🔴-🟠🟠🟠-🟢 | Moderately Tight (600 m) | 239 m → 7,618 m | |
| 6M 1540y - 6M 1650y | ⭕-🔴🔴🔴-🔵 | Very Tight (244 m) | 101 m → 2,670 m | BARRY DOCK |
| 6M 1650y - 7M 0000y | ⭕-🔴🔴🔴-🟠 | Very Tight (322 m) | 182 m → 611 m | BARRY DOCK |
| 7M 0000y - 7M 0110y | 🔴-🟠🟠🟠-🟠 | Tight (373 m) | 244 m → 545 m | BARRY DOCK |
| 7M 0110y - 7M 0220y | ⭕-🔴🔴🔴-🟠 | Very Tight (236 m) | 147 m → 581 m | |
| 7M 0220y - 7M 0330y | ⭕-🔴🔴🔴-🟠 | Very Tight (242 m) | 135 m → 497 m | |
| 7M 0330y - 7M 0440y | 🔴-🟠🟠🟠-🔵 | Moderately Tight (710 m) | 321 m → 2,977 m | |
| 7M 0440y - 7M 0550y | ⭕-🟠🟠🟠-🟣 | Tight (393 m) | 178 m → 1,254 m | |
| 7M 0550y - 7M 0660y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (739 m) | 560 m → 1,241 m | |
| 7M 0660y - 7M 0770y | 🔴-🟠🟠🟠-🟡 | Tight (469 m) | 262 m → 881 m | |
| 7M 0770y - 7M 0880y | 🟡-🟡🟡🟡-🟣 | Moderate (1,197 m) | 1,087 m → 1,580 m | |
| 7M 0880y - 7M 0990y | 🟣-🔵🔵🔵-🟢 | Moderately Flat (2,861 m) | 1,741 m → 6,786 m | |
| 7M 0990y - 7M 1100y | 🟣-🟣🟣🟣-🔵 | Moderate (1,836 m) | 1,397 m → 2,348 m | |
| 7M 1100y - 7M 1210y | 🟣-🟣🟣🟣-🔵 | Moderate (1,870 m) | 1,518 m → 3,252 m | |
| 7M 1210y - 7M 1320y | 🔴-🟡🟡🟡-🔵 | Moderate (757 m) | 333 m → 2,055 m | |
| 7M 1320y - 7M 1430y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (505 m) | 379 m → 687 m | |
| 7M 1430y - 7M 1540y | 🟠-🟡🟡🟡-🔵 | Moderate (852 m) | 465 m → 2,278 m | |
| 7M 1540y - 7M 1650y | 🔴-🟠🟠🟠-🟡 | Tight (445 m) | 249 m → 1,001 m | |
| 7M 1650y - 8M 0000y | 🟠-🟣🟣🟣-🟢 | Moderate (1,766 m) | 522 m → 6,672 m | |
| 8M 0000y - 8M 0110y | 🟡-🟡🟡🟡-🔵 | Moderate (1,072 m) | 774 m → 2,140 m | |
| 8M 0110y - 8M 0220y | 🟣-🔵🔵🔵-🟢 | Moderately Flat (2,466 m) | 1,847 m → 6,310 m | BARRY TOWN |
| 8M 0220y - 8M 0330y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,432 m) | 1,772 m → 3,052 m | BARRY TOWN |
| 8M 0330y - 8M 0440y | ⭕-🔴🔴🔴-🔵 | Very Tight (232 m) | <100 m → 3,056 m | BARRY TOWN; Barry Jn |
| 8M 0440y - 8M 0550y | ⭕-⭕⭕⭕-⭕ | Extremely Tight (145 m) | <100 m → 203 m | |
| 8M 0550y - 8M 0660y | ⭕-⭕⭕⭕-🟠 | Extremely Tight (154 m) | <100 m → 452 m | |
| 8M 0660y - 8M 0770y | ⭕-🟠🟠🟠-⚪ | Tight (382 m) | <100 m → Straight | |
| 8M 0770y - 8M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 8M 0880y - 8M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 8M 0990y - 8M 1100y | 🔵-🟢🟢🟢-⚪ | Very Flat (14,137 m) | 4,340 m → Straight | |
| 8M 1100y - 8M 1210y | 🟣-🔵🔵🔵-⚪ | Flat (4,328 m) | 1,415 m → Straight | |
| 8M 1210y - 8M 1320y | ⭕-🟣🟣🟣-⚪ | Moderate (1,344 m) | 186 m → Straight | |
| 8M 1320y - 8M 1430y | ⭕-🔴🔴🔴-⚪ | Very Tight (260 m) | <100 m → Straight | BARRY ISLAND |
| 8M 1430y - 8M 1540y | ⭕-🔴🔴🔴-⚪ | Very Tight (281 m) | <100 m → Straight | BARRY ISLAND |
| 8M 1540y - 8M 1650y | ⭕-🟠🟠🟠-⚪ | Moderately Tight (598 m) | 193 m → Straight | BARRY ISLAND |
| 8M 1650y - 9M 0000y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (579 m) | ||
| 9M 0000y - 9M 0110y | 🔴-🟠🟠🟠-🟠 | Tight (401 m) | 298 m → 592 m | |
| 9M 0110y - 9M 0220y | 🟡-🟡🟡🟡-🟡 | Moderate (784 m) | ||
| 9M 0220y - 9M 0228y | ⚪-⚪⚪⚪-⚪ | Straight |