What a performance from the Canadian rider!
Lach is still pulling, 10'' ahead of the favourites.
Can the early attackers hold on? Marta Bastianelli (UAE Team ADQ) is now leading the chase with Elisa Longo Borghini (Trek-Segafredo).
Kopecky is on her wheel. The gap drops down to 10'' with 4km to go.
The gap is back up to 20''.
The attackers get out of sector 2 with a gap of 10''. They have 7 km to go, including 300m of cobbles in Roubaix.
Lach still sets the pace on the cobbles, 15'' ahead of the 19-woman bunch.
Börgstrom, Andersen and Vandenbulcke are about to be caught by the bunch, just behind the leaders.
Riders at the front are looking at each other. The group with Longo Borghini only trail by 20'' with 11km to go.