Royal Ontario immediately ranked in the top 10 new courses in 2003. Despite its hazards of fescue and water, it is the variety of tee blocks that allow for golfers of all calibers to find the desired amount of challenge to suit their game.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | OUT | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | IN | TOTAL | ||
| PRO | 421 | 183 | 536 | 457 | 271 | 458 | 360 | 162 | 588 | 3436 | 543 | 165 | 434 | 360 | 436 | 441 | 430 | 220 | 609 | 3638 | 7074 | |
| GOLD | 412 | 177 | 522 | 446 | 262 | 435 | 344 | 157 | 564 | 3319 | 490 | 157 | 409 | 343 | 422 | 428 | 416 | 207 | 595 | 3467 | 6786 | |
| BLUE | 394 | 166 | 502 | 426 | 239 | 405 | 332 | 142 | 542 | 3148 | 452 | 139 | 384 | 332 | 407 | 373 | 390 | 189 | 571 | 3237 | 6385 | |
| WHITE | 375 | 143 | 482 | 363 | 216 | 385 | 322 | 124 | 506 | 2916 | 434 | 116 | 359 | 319 | 386 | 347 | 371 | 171 | 539 | 3042 | 5958 | |
| RED | 322 | 126 | 415 | 312 | 196 | 346 | 270 | 111 | 431 | 2529 | 374 | 100 | 329 | 290 | 355 | 305 | 334 | 148 | 461 | 2696 | 5225 | |
| GREEN | 209 | 62 | 320 | 246 | 169 | 280 | 226 | 60 | 361 | 2033 | 288 | 90 | 231 | 232 | 244 | 245 | 257 | 90 | 334 | 2011 | 4044 | |
| PAR | 4 | 3 | 5 | 4 | 4 | 4 | 4 | 3 | 5 | 36 | 5 | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 5 | 36 | 72 | |
| MENS HCP | 6 | 10 | 4 | 8 | 16 | 2 | 14 | 18 | 12 | 13 | 17 | 15 | 7 | 3 | 11 | 5 | 9 | 1 | ||||
| LADIES HCP | 6 | 16 | 10 | 12 | 14 | 4 | 8 | 18 | 2 | 3 | 17 | 15 | 7 | 5 | 11 | 9 | 13 | 1 |
| Rating | 75.0 | 73.4 | 71.5 | 69.7 | 70.8 | TBD |
| Slope | 146 | 142 | 136 | 130 | 124 | TBD |