Australia's Michael Shelley overtook Hawkins while he was on the ground to claim back-to-back Commonwealth titles.
With a commanding lead, the 25-year-old was set for gold when he suddenly began weaving before eventually tumbling to the ground, striking a barrier with his head as he fell.
Team Scotland wrote on social media that Hawkins had been taken to hospital for monitoring, but medical staff had "no major concerns" about his condition.
"I was also concerned about the behaviour of a small number of bystanders who chose to take images".
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.
They were under the impression that medical support was on its way, as well the race's rules that would have seen Hawkins disqualified if a member of the public aided him.
Some spectators even took pictures of a stricken Hawkins with nobody seeming to offer any help. You would think he is clearheaded enough that if you can just keep going a bit longer he will get a gold medal.
Mr Peters said he was anxious about the actions of some spectators when Hawkins collapsed.
"Unfortunately athletes do run themselves to exhaustion and there is rarely a marathon where someone isn't collapsing".
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Hodgson deserves credit for helping lift Palace out of the bottom three after the team lost their opening seven league matches. I don't really buy into it, but I read stuff on Twitter and think "half of you lot don't even watch me play".
BBC Sport commentator Steve Cram said it was "a disgrace" it took so long for any paramedics to attend to Hawkins. "This is not in keeping with the spirit of Gold Coast 2018".
According to GOLDOC, medical staff were posted at 500m intervals in the final kilometres of the course, and were equipped with radio communications. When I was coming down the home straight I tried to accelerate but I was just gone. I'm glad to finish, to be honest. "You've got to be fierce and that was as fierce as I've ever been". They might have just been trying to encourage me but then I saw him on the bridge and I was aware he was in trouble but I just tried to hang on.
"I never felt too bad, I was exhausted, it was hot but it always felt manageable, on the right side of what was safe".
Hawkins had showed gradual signs of deterioration in the five to 10 minutes before he collapsed for good.
"I've been in the same situation in the heat and I was hallucinating", said Simpson. I was thinking that I wanted to get to the end just so I can be part of the Scottish team and do the whole team proud. You have these feelings of the overwhelming heat, like being in an oven.
The 37-year-old's worldwide career came to a close with a time of 1:30:26 to win by over a minute ahead of John Smith and Simon Lawson, who claimed two medals for England.
Earlier, when Hawkins first collapsed, McAvaney labelled his condition "completely and utterly distressed".
"I've spent the last four weeks with Callum and he's been great for me, giving me confidence and showing me how the best guys prepare so I learned a lot".
Seven of the 24 starters failed to finish and Northern Ireland's Paul Pollock was a late withdrawal due to a tarsal stress fracture he sustained last weekend.