| NATC | North American Trials Council, National schedules, rules, and results. |
| USA TdN Team | Site for the USA Trial des Nations Team. Donate, photos, and more…. |
| National Club Directory | North American clubs |
| International Trials School | Organizer of youth trials and the Western Youth Nationals |
| Trials Training Center | Trials/motorcycle resort and training center, and organizer of the Eastern Youth Nationals |
| Trials Central | British trials site, world trials news, forums, and more |
| TodoTrial | European site, has an English version |
