It was the kind of scene he'd experienced many times in his almost three decades as a Toronto paramedic.
Eliadis's friend George Christopoulos took to social media to express his grief.
"When he was hit and anguishing in pain, the paramedics who responded to the scene went to him", Christopolous told CBC Toronto.
Medic George Eliadis and his partner Shari Williams were in a group riding on Hwy.
She said the paramedics force really feels like a "family", and that the loss is hitting them hard. "By the time they had returned, he had passed".
Two others, whose identities have not been made public, sustained life-threatening injuries.
Now, Christopolous and his friend's former colleagues are remembering Eliadis as a dedicated paramedic whose passion for helping others continued until his death. Two other people were sent to hospital with serious injuries. George Eliadis was a respected deputy commander at Toronto EMS, a loving father and a lovely person, inside and out. "If you look under Pan Am Games, or Pride, or special operations, or working with Toronto police or fire, he would have been integrally involved over the 27 years he worked here".
"He was so highly respected by everyone", she said.
Eliadis was also a loving father of two, Christopolous said, a new grandfather, and longtime partner to Keyes-Williams.
118 near Essonville Line, near Haliburton, on Saturday evening when OPP say an eastbound vehicle crossed the centre lane and collided with four of seven motorcycles travelling westbound.