1The steep pitch
From 4.0 km to 4.1 km
0.2 km Β· +8.7% average Β· 15.7 km/h Β· 107 bpm, peaking at 111
You climbed out of Crawley steadily at 16 km/h, but your heart rate hardly budgedβthat's the kind of easy tempo you want to find early on when you've got 50 km still to go.