The Belfast Marathon is a great opportunity to showcase the city to visitors as well as give runners of all capabilities the chance to raise thousands of pounds for charities.
Sadly, a cloud was cast over the event yesterday when a middle-aged local runner collapsed and died shortly after it began.
For one family, yesterday was a time of great shock and sorrow. By all accounts the man was an experienced runner although this was his first marathon.
No one could have expected this tragedy and the thoughts of all those who took part will turn towards that family who will have many difficult times ahead.