Ten climbs feature on the route of Liege-Bastogne-Liege, with just one on the way to Bastogne and nine on the grueling return leg to Liege.

The Cote de La Roche-Ardenne opens proceedings 70km into the race – with several uncategorised climbs already encountered – and the 2.8km climb has an average gradient of 6.2 per cent.

After reaching Bastogne at 99.5 kilometres, the second half of the race kicks off with the Cote de Saint-Roch and the Cote de Wanne, along with the Cote de Stockeu – the fiercest of the early climbs.

Just one kilometre in length, the lower ramps of the ascent are graded at 9.5 per cent, before a punishing 14.9 per cent ramp just short of the statue of Eddy Merckx at the summit.

That’s followed almost immediately by the Haute-Levee, which at 3.6 kilometres is the longest of the race’s ascents – a sharp ramp at the bottom making way for more generous gradients towards the top.

La Redoute is one of the race’s signature climbs and often provides a launch pad for a late escape. Arriving after 218.5km of racing in the legs, the two kilometre climb’s 8.9 per cent average gradient is inflated by a punishing ramp which touches 13 per cent halfway up.

Three further ascents follow – the Forges, the Roche-aux-Faucons and the Cote de Saint-Nicholas – before the uphill finish into Ans where Martin and Rodriguez will hope to be among the contenders again.