The route of Liège-Bastogne-Liège was altered at the last minute on Sunday morning as snowfall affected the road surfaces of the Belgian race.
The deviation affected the race between kilometre 45 to 75, then rejoined the original route before the day’s first major climb of Côte de la Roche en Ardenne.
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Several teams posted photographs of snow-covered roads on social media as they made their way to the race’s first feed zone.
Riders appeared on the start line shrouded in full winter kit, as temperatures hovered around freezing point.
The conditions did not come as a complete surprise, as snowfall and icy conditions were forecast for the region earlier in the week.
The final Ardennes Classic and one of cycling five great ‘Monuments’ was originally planned to comprise 253km of racing and 10 major climbs.
At the time of writing, a eight-man escape group had a nine-minute advantage over the peloton after 80km.
Full race report, results and photos later.