This website lists when events are on, and we are not involved with organising any of them. In most cases, the information we have listed is straight from the event website or Facebook page.
If you are an international athlete looking for an invitation to an event, then you need to contact the event organisers directly; sorry, but we cannot help you with this.
To do this, search for the events you are interested in or go back to the event you were looking at. There you will find links through to the website, contact page and/or Facebook page for the specific event. Click through to one of those and contact the event organiser there.