Club Deportivo Marathón
| OFFICIAL NAME | Club Deportivo Marathón |
| FOUNDED | - |
| CONCACAF AFFILIATION | Debut 2019 |
| HEAD COACH | - |
| QUALIFICATION METHOD | Non Champions with best 2019/20 aggregate record (Honduran Liga Nacional) |
| BEST FINISH | Preliminary Round in 2019 |
| PREVIOUS APPEARANCES | 2019 |
Marathon are back in the SCL for a second straight year as the Honduran club with the best aggregate record in 2019-20 among non-champions. Marathon finished in the Preliminary Round in 2019.