He set out after the disappearing pack and incredibly passed more than 20 riders before settling for 11th position at race end.
And the ugly part of Lamont's weekend?
Well, the ugly truth is the New Zealand MX2 champion has moved only one point closer to the top of the championship standings.
Lamont, 20, finished the day second equal overall, behind fellow Husqvarna rider Luke Arbon and level with Brenden Harrison.
Lamont had started the weekend 13 points adrift of championship leader Luke Clout and now he is 12 points behind. But at least he's making advances in the right direction.
Clout finished the day fourth overall at Murray Bridge.
"The track surface was quite a lot like Tokoroa today, soft in places but reasonably firm in others, but I'm really looking forward to the next round at Wanneroo," he said about the track on the outskirts of Perth next weekend.
"It's quite sandy and a lot like the Taupo track at home. There will be three races for each of the classes next round too, instead of just the two, and so my chances of gaining ground look better as long as I don't have more bad luck. I'm a little sore after the crash but I have plenty of time to recover and I'm feeling very strong. I'll be fighting fit at Wanneroo."