WATCH: Thousands line out to Run in the Dark in Cork and Dublin

Cork City was unusually busy last night as hundreds of runners filled the streets for this year's Run in the Dark.

The event, which is organised by The Mark Pollock Trust, has huge popularity and last night saw participants complete 5k and 10k runs.

The run aids The Mark Pollock Trust which seeks to find a cure for spinal cord injury.

Mark Pollock was left paralysed in 2010 when he fell from a second-floor window, breaking his back and suffering spinal cord damage in the process.

#RuninTheDark is about to kick off in #Cork and Pana is buzzing boiiiii!! 🖒🎖🏃⛄ pic.twitter.com/0fxG5IesXA

— Mary White (She/Her) (@mary_white33) November 16, 2016

Dublin also hosted a Run in the Dark race last night which saw thousands line the streets.

An amazing 270+ Volunteers were out in force supporting 9,000 runners at #RuninTheDark Dublin tonight, braving the cold! pic.twitter.com/xdtfoYYLBg

— L Carroll (@AudioFonic) November 16, 2016

Catching up with Mark Pollock after finishing #RuninTheDark #dublin pic.twitter.com/mTEjD3KWlm

— John O'Regan (@johnoregan777) November 17, 2016