It takes Lara 7 minutes and 23 seconds to make it through the obstacle course the first time. 7 minutes x 60 seconds per minute = 420 seconds + 23 seconds = <<7*60+23=443>>443 seconds to get through the first part of the obstacle course.
The second stage of the obstacle course she completes in 73 seconds + 443 seconds = <<73+443=516>>516 seconds.
It takes 5 minutes and 58 seconds for Lara to get through the obstacle course the second time. 5 minutes x 60 seconds per minute = 300 + 58 seconds = <<300+58=358>>358 seconds.
Combined, it takes Lara 516 + 358 seconds = <<516+358=874>>874 seconds for Lara to run the whole obstacle course.
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