Sadie Stephenson, 32, lives in Thirsk with husband, Nathan, 32, and children, Florence, three and two-year-old Archer.
She began her career in advertising at The Press in York, before moving into marketing and on Sunday (April 14) she's running her first marathon - the Adidas Manchester Marathon - to raise money for the Williams Syndrome Foundation.
The foundation helps children and adults with Williams Syndrome, a disability and a rare genetic disorder which affects Florence.
At just six weeks old the doctor discovered that Florence had a heart murmur and further investigations discovered she had three different heart conditions.
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