Over 300 Donegal competitors will take part in the Dublin City Marathon on Sunday.
The organisers have compiled this video clip which shows the 26 mile (42km) route.
A significant number of people from Donegal will also make the trip to cheer on the runners.
The race begins at 9.00 am, but the start is stagged into "waves" due to the fact that around 20,000 people are taking part in what is the fifth biggest marathon in Europe.
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