Tao Geoghagen Hart impressed on stage six of the Tour de l’Avenir to move into tenth place in the general classification.
Hart, part of a six-person Great Britain Cycling Team in France, finished 14th on the 108.4-kilometres parcours from Saint-Gervais to La Rosiere-Mont Valezan.
The 19-year-old was one minute and 40 seconds behind winner Miguel Angel Lopez as the stage ended with a first-category summit finish on the Montee de la Rosiere. The victory for the Colombian extended his overall lead in the yellow jersey.
Australia’s Robert Power was second, a wheel length behind Lopez with Russia’s Alexey Ribalkin third, three seconds back.
Hart is now two minutes and 59 seconds behind Lopez with only the 95.1-kilometre final stage from St-Michel-de-Maurienne to La Toussuire remaining on Saturday.
Of the remaining British riders, Scott Davies was 35th, Owain Doull 45th, Daniel Pearson 46th and Jake Kelly 76th. Daniel McLay abandoned but leaves the Tour of the Future with his stage three victory.
The 19-kilometre climb to Rosiere saw cracks appear within the bunch, a familiar sight as the race presented its third summit finish.
Lopez and Powers made their move inside the final 10km and would remain together to the line.