2020 National Championships
The 2020 Triathlon Ireland National Championships are listed below. All events are awarded in respective male and female 5 year age bands and will be presented at the Triathlon Ireland Annual Awards.

2020 National champsionships
| January 26th | Para-Duathlon National Championships | Galco Naas Duathlon |
| 11th October | Intervarsity Duathlon Championships | Galco Naas Duathlon |
| Date TBC October | Duathlon National Championships & Junior Duathlon National Championships | Phoenix Park Duathlon |
| Date TBC October | National Post Primary Schools Championships | Co. Clare |
| Date TBC | Aquathlon National Championships - Sprint Distance | TBC |
Date TBC | Aquabike National Championships - Standard Distance | TBC |
| 26th September | Elite & Age Group Sprint National Championships
*Note: The National Champions at Sprint Distance will be the men's and women's winners of the Elite National Triathlon Championship event. While there will be a series of National Championships Age Group category winners, there is no 'overall age group national champion'. | Bolands BMW Hook or by Crook |
| Date TBC | Standard Distance National Championships | TBC |
| Date TBC | Paratriathlon National Championships | TBC |
| Date TBC | Intervarsity Triathlon National Championships | TBC |
| Date TBC | Middle Distance National Championships | TBC |
| Cancelled | Childrens, Youth & Junior Triathlon Festival | Cancelled |
