Dolgellau is getting ready Ras y Gader.
It takes place on Saturday, 18 May.
This is the 31st time the race has been run since it started 32 years ago.
The main race is sold out but children can register for that morning’s Fun Run at the Free Library.
A race spokesperson added: “We are very grateful to our sponsors Robinsons at the Royal Ship Hotel, JGS Electrical Solutions Ltd and Cyngor Dref Dolgellau.
“Please also note the usual road closure on the day.”