The ‘Liberation 7’ road race turns 80 this year – with the course record turning 60.
The seven mile run from Rousse to town has been staged almost annually since 1946.
Although it wasn’t always competed on Liberation Day it has become synonymous with the 9 May celebrations over the years.
The event had ‘sold out’ by mid-week, meaning up to 200 runners could toe the line outside the Puffin and Oyster on Saturday morning, ready for a 09:00 start.
They’ll run towards Vale Church, Bordeaux, Bulwer Avenue, and along the east coast, before crossing the finish line at North Beach.
The quickest runners will be hoping to emulate David Kreckeler who is the fastest person to ever run the course, and that distance in Guernsey.
His record time of 34:39:00 set in 1966 still stands, with few coming close over the years.
Mr Kreckeler died in 2023, having spent many a Liberation Day watching runners pass Salerie Corner, on their way to the finish line, timing them to see if any would beat him.
Olympian Lee Merrien has come closest, completing the course in 2014 in less than a minute outside Mr Kreckeler’s record time.
This fastest man and woman last year were James Priest and Lindsay Sword crossing the line in 38:07 and 45:08 respectively.
The female record was set by Louise Perrio who ran 40:24:00 in 2017.