The coordinates of the demarcated points are indicated in the official cartographic projection system of Costa Rica, CRTM05, from map MBCR- 1/50,000, Sheet Cabuya, as follows:
Playa San Martín sector:
Markers numbered M508 to M500, officially established by Notice No. 03-20, published in Diario Oficial La Gaceta No. 151 of August 7, 2003, have the following coordinates:
| Mojón | Este | Norte |
|---|
| M508 | 520813.757 | 1018479.749 |
| M507 | 520788.222 | 1018488.751 |
| M506 | 520725.085 | 1018505.047 |
| M505 | 520688.108 | 1018510.882 |
| M504 | 520634.852 | 1018511.643 |
| M503 | 520582.947 | 1018506.872 |
| M502 | 520530.750 | 1018514.789 |
| M501 | 520494.439 | 1018494.140 |
| M500 | 520458.939 | 1018475.459 |
(09 markers numbered M508 to M500) After marker M500, it continues from marker M4 to M9, officially established by an unnumbered Notice published in Diario Oficial La Gaceta No. 77 of April 24, 1986, with the following coordinates:
| Mojón | Este | Norte |
|---|
| M4 | 520404.449 | 1018484.268 |
| M5 | 520394.490 | 1018527.675 |
| M6 | 520379.941 | 1018571.907 |
| M7 | 520357.743 | 1018675.568 |
| M8 | 520300.321 | 1018691.855 |
| M9 | 520247.017 | 1018708.197 |
(06 markers numbered M4 to M9) It continues with the markers numbered M110 to M113, officially established by Notice No. 99-30, published in Diario Oficial La Gaceta No. 192 of October 4, 1999, with the following coordinates:
| Mojón | Este | Norte |
|---|
| M110 | 520135.054 | 1018721.799 |
| M111 | 520116.736 | 1018729.954 |
| M112 | 520076.454 | 1018761.285 |
| M113 | 520037.093 | 1018793.342 |
(04 markers numbered M110 to M113) Finally, it links up with the markers numbered M15 to M18, officially established by Notice No. 94-14, published in Diario Oficial La Gaceta No. 166 of September 1, 1994, with the following coordinates:
| Mojón | Este | Norte |
|---|
| M15 | 520013.658 | 1018801.129 |
| M16 | 519965.311 | 1018803.402 |
| M17 | 519913.280 | 1018811.047 |
| M18 | 519858.884 | 1018816.708 |
(04 markers numbered M15 to M18)