The FETRI has presented its calendar of Spanish Championships, National Leagues of Duathlon, Triathlon and Talent Triathlon Clubs, and 2021 International
The calendar for the next season has been drawn up without forgetting the situation still derived from COVID-19 and pending its evolution, with the guarantee of the security legacy provided by the events, both national and international, held in 2020.
After hosting the last Triathlon World Cup in 2020, held in Valencia, the organizations of international federations, ETU and ITU World Triathlon are once again betting on Spain as the venue for important events.
FETRI 2021 Calendar
| Name | Date | Site |
| Spanish Winter Triathlon Championship | 14/02/2021 | Ansó |
| 1st Qualifying Championship of Spain of Duathlon | 06/03/2021 | Berlanga de Duero |
| Winter Triathlon World Championship | 20/03/2021 | Andorra |
| 2st Qualifying Championship of Spain of Duathlon | 21/03/2021 | Águilas |
| Spanish Duathlon Championship | 10/04/2021 | Avilés |
| Triathlon European Cup | 18/04/2021 | Melilla |
| Spanish Duathlon Team Time Trial Championship | 24/04/2021 | Alcobendas |
| Spanish Time Trial Duathlon Championship by Talent Teams | 24/04/2021 | Alcobendas |
| Spanish Duathlon Championship by Relays | 25/04/2021 | Alcobendas |
| Spanish Duathlon Championship for Talent Relay | 25/04/2021 | Alcobendas |
| Spanish Championship of Duathlon SuperSprint by Clubs | 08/05/2021 | La Nucia |
| Spanish Championship of Duathlon SuperSprint by Relay / Pairs | 08/05/2021 | La Nucia |
| Spanish Championship of Duathlon SuperSprint by Clubs 2 × 2 | 09/05/2021 | La Nucia |
| Spanish Cup Triathlon MD and LD | 15/05/2021 | Pamplona |
| Spanish Duathlon Championship by Clubs | 22/05/2021 | Valladolid |
| Spanish Duathlon Championship by Mixed Relay | 23/05/2021 | Valladolid |
| Spanish Duathlon Championship for Mixed Talent Relay | 23/05/2021 | Valladolid |
| Spanish Long Distance Triathlon Championship | 30/05/2021 | Platja d'Aro |
| Long Distance Duathlon World Championship | 30/05/2021 | Zofingen |
| 1st Spanish Triathlon Championship Qualifier (Sprint) | 30/05/2021 | Merida |
| Spanish Time Trial Triathlon Championship by Talent Teams | 05/06/2021 | Águilas |
| Copa del Rey Go Fit Triathlon and Copa de la Reina Iberdrola Triathlon | 05/06/2021 | Águilas |
| Spanish Triathlon Relay Championship | 06/06/2021 | Águilas |
| Spanish Triathlon Championship for Talent Relay | 06/06/2021 | Águilas |
| 2st Spanish Triathlon Championship Qualifier (Sprint) | 13/06/2021 | Portugalete |
| Spanish Cup Triathlon MD and LD | 19/06/2021 | The Rioja |
| Spanish Triathlon Championship by Clubs | 19/06/2021 | Coruña |
| Spanish Triathlon Championship by Mixed Relay | 20/06/2021 | Coruña |
| Spanish Triathlon Championship for Mixed Talent Relay | 20/06/2021 | Coruña |
| Paratriathlon World Cup | 20/06/2021 | La Coruna |
| Club La Santa Ironman Lanzarote | 03/07/2021 | Lanzarote |
| European Long Distance Triathlon Championship | 04/07/2021 | Roth |
| Ironman Vitoria | 11/07/2021 | Vitoria |
| 1st Spanish Triathlon Championship Qualifying (Olympic) | 17/07/2021 | Almazán |
| 2st Spanish Triathlon Championship Qualifying (Olympic) | 24/07/2021 | Logroño |
| Spanish Triathlon Championship (Olympic) | 04/09/2021 | Banyoles |
| European Junior Triathlon Cup | 05/09/2021 | Banyoles |
| Spanish Championship of Medium Distance Triathlon and «Aquabike» | 18/09/2021 | Bilbao |
| Ironman 70.3 Marbella | 19/09/2021 | Marbella |
| European Triathlon Championship | 25/09/2021 | Valencia |
| Spanish Triathlon Championship (Sprint) | 02/10/2021 | Pontevedra |
| Ironman Barcelona | 03/10/2021 | Calella |
| Ironman 70.3 Barcelona | 03/10/2021 | Calella |
| Club La Santa Ironman 70.3 Lanzarote | 09/10/2021 | Lanzarote |
| Spanish SuperSprint Triathlon Championship by Clubs | 09/10/2021 | Roquetas de Mar |
| Spanish Relay / Couples Triathlon Championship | 09/10/2021 | Roquetas de Mar |
| Spanish SuperSprint Triathlon Championship by Clubs 2 × 2 | 10/10/2021 | Roquetas de Mar |
| Sapphire Ironman 70.3 Alcúdia | 10/10/2021 | Alcudia - Mallorca |
| Peguera Challenge | 16/10/2021 | Peguera - Majorca |
| Ironman Mallorca | 16/10/2021 | Alcudia - Mallorca |
| ProTour Madrid | 23/10/2021 | House |
| ProTour FETRI Age Groups | 23/10/2021 | Madrid |
| Spanish Cup Triathlon MD and LD | 24/10/2021 | Ibiza |
| Spanish Duathlon Cros Championship | 30/10/2021 | The ring |
| Aquathlon Spanish Championship | 30/10/2021 | The ring |
| Spanish Cup Triathlon MD and LD | 30/10/2021 | Seville |
| Spanish Championship of Triathlon Cros | 31/10/2021 | The ring |
| Spain Middle Distance Duathlon Championship | 14/11/2021 | Soria |
