Gibbons, who turned 21 on Thursday, crossed the finish line of the 115km race alongside Meron Teshome Hagos, Nolan Hoffman, Clint Hendricks and Shameeg Salie in a bunch sprint in a time of 2:34:27.
The Team Europcar rider is enjoying a stellar year and his long list of accolades in 2015 also include victories at the Mayoral Race in Polokwane and the aQuelle Tour Durban in April.
“I was very fortunate today and I owe a lot to my team. Normally you would expect a bit of wind, but that wasn’t the case today. Weather conditions were near-perfect,” said Gibbons.
“I’ve been selected to represented South Africa at the Under-23 World Championships in Richmond in the United States next month, to which I’m really looking forward to. That will be my main goal over the next two months.”
Veteran Lynette Burger won the women’s race in 3:15:11, followed by Charlene du Preez and Desray Sebregts.
The Lost City Cycle Challenge started in 1998 to raise funds for CANSA North West and Limpopo. The 115km and 66km road race features one of the flattest and most scenic routes through the North West Province and the weekend’s festivities also include mountain bike races over various distances scheduled for Sunday.