From the Boston.com article:

She tucked in training around her 60-hour workweek and finished her first-ever footrace, the 1994 New York City Marathon, in 3 hours 36 minutes - just over 8 minutes per mile, fast enough to qualify for Boston's 99th running.

and:

For years, she'd been working two jobs and saving up to climb the world's highest peak. She'd refinanced her house, and she'd trained her body - sprinting uphill with a tire tied to her waist - and her mind, running on a treadmill for three hours at a time without radio or television for distraction.