Mt Wallace looks tough. I've raced and trained in bunches containing top-class female cyclists and it takes some doing to drop 'em. Let alone force them to walk up a hill! It looks steep, but I'd like to know how steep it is... anyway, CN reports on the stage here.
Cyclingnews.com also shares some data on 3rd placed Rochelle Gilmore's effort:
Road Stage 3
Time: 3hr 6min 10sec (unofficial time)
Average Speed: 34.7km/hr
Average HR: 162bpm
Max HR: 211bpm
I'm impressed, especially with the Max HR of 211!