Callum Hawkins was leading the marathon by nearly two minutes and was less than two miles from the finish when he collapsed from heat exhaustion in 30 degree heat.
The 25-year-old had a two-minute lead and looked like he was heading for gold before he started to weave on the road clearly in trouble.
But after another couple of hundred metres, Hawkins collapsed again, this time hitting his head on the roadside barrier. "This is not in keeping with the spirit of GC2018", he said.
Speaking from his hospital bed Callum Hawkins added: "Thanks for all your messages of support today and to the Gold Coast University Hospital staff".
As the brutal conditions took their toll on all the runners, positions changed radically over the closing stages and Scotland gained a Commonwealth marathon medal from an unexpected source with Robbie Simpson clinching bronze.
Michael Shelley of Australia won the Commonwealth Games men's marathon in dramatic fashion Sunday when leader Callum Hawkins of Scotland collapsed to the road with cramping with about two kilometers to go.
In a later tweet, Team Scotland wrote that Hawkins was sitting up and talking, but was undergoing further tests as a precaution.
Former athlete Steve Cram, commentating for the BBC, said it was a "disgrace".
Poor Callum Hawkins. He's delirious.
"GOLDOC can confirm that during the race, medical staff were posted at 500metre intervals in the final kilometres of the course all of which had radio communications", the release said. "We're offering every assist potential to Callum and Group Scotland". "The response of medical staff this morning was inside agreed response suggestions and timeframes", talked about the assertion.
'I was also concerned about the behaviour of a small number of bystanders who chose to take images, ' he said.
Hawkins did not finish the race.
Eventual victor Shelley had slowed to 5:48 miling over the final 2km as he clocked 2:16:46 - the second slowest time for victory since 1966.
"I just tried to run a smart race and come through and in the end I managed to do it, but it was really tough". I had just a few mates spherical Foremost Seaside who talked about Callum was in a little bit little bit of problem.
"Sometimes medial people arrive too and the athlete has to decide whether they want to go on or not. I am now feeling much better". When I was coming down the home straight I tried to accelerate but I was just gone. You can not just wait at the finish line - people get in distress further down the course.
Hawkins had moved away from the pack and opened up a gap from Uganda's Munyo Solomon Mutai, who was initially behind him in second.
The women's race was won by Namibia's Helalia Johannes, while Australia enjoyed double success in the wheelchair marathon races with Madison de Rozario and Kurt Fearnley taking gold in the women's and men's T54 respectively.
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