Walker has now competed in eight monobob events, emerging victorious an impressive six times in the new Olympic event which will debut in Beijing 2022.
Finishing in second place 0.44 seconds behind Walker was German Laura Nolte, with local Austrian slider Katrin Beierl 0.56 seconds in third place.
"The edge I believe has come from all the work I have done off the track this summer," the QAS athlete commented after the race.
"This year hasn’t been easy. I wasn’t able to go back to Australia because of COVID, but I have been able to spend the summer training in Germany with my push coach and some of the best bobsleigh athletes in the business. This time allowed me to solely focusing on becoming the best athlete I can be so I have made huge improvements physically and mentally.
"It’s an unbelievable sight seeing the 1 next to your name but honestly it didn’t really hit me until I saw my bobsleigh teammate Sarah run up to me and give me a huge hug. Even though this is more of an individual event i honestly couldn’t of done it without my team."
"My goal is to continue to progress my pushing and driving skills in both the monobob and twoman events and this time actually make it to the big dance. Unfortunately last time I missed out on the 2018 Winter Olympics, so now my team and I have full focus on doing everything it takes to qualify for the 2022 Winter Olympics. From there anything is possible."
The competition in Innsbruck was the first Monobob event to be run in conjunction with a BMW IBSF World Cup.
Walker will be back in action tomorrow in Innsbruck, competing in the two woman bobsleigh World Cup with breakwoman Sarah Blizzard.