British Cycling Olympic Development Programme athlete Matt Gibson finished fifth in the UCI Road World Championships junior time trial.
Gibson, in his first junior year, posted his time of 27 minutes 26 seconds with over 20 riders to start their test and for a time held second position.
However, Gibson was demoted to fifth as faster times were set and he finished an agonising nine seconds away from a medal, 30 seconds from the win, claimed by Belgium's Igor Decraene.
After crossing the line, Gibson vomited twice, such was his effort, but was soon already looking to his second year in the event.
"I learned how hard I can go which really helps, to know just how hard you can push" Gibson said.
"Across the line I vomited, then someone stepped in front of me, so I cut my knee up a bit.
"During the race, I was getting great support from Matt (Winston - British Cycling Olympic Development Programme endurance coach), with times from the car, it was good motivation to push on to the finish. I've learned what I need to do next year, I'll see what I can do then."
1. Igor Decraene (BEL) 26:56.83
2. Matthais Krigbaum (DEN) +00:08.66
3. Zeke Mostov (USA) +00:20.97
5. Matt Gibson (GBR) +00:30.16