For the first time in Goa, the event will have the full marathon of 42.2kms, at par with international events standard, an official release said.
The GRM will also have a 10km half-marathon.
With online registrations from national and international participants already touching over 2,000, a concerted effort has been made this year to garner more participation from Goa, through practice runs and registration drives held in Vasco and Panjim, the release said.
The organisers also announced a special discount for Goans to attract more youngsters to the sport.
"Skechers is very proud to be associated with the Goa River Marathon 2015," Skechers South Asia Pvt Ltd CEO Rahul Vira said.
Goa Tourism is also supporting the GRM.