Question 850652
2 hours 15.25 minutes for 26.2 miles.  Amazing!
.
The total distance has to equal 26.2
Let x be the distance from the end
Let y be the distance from the starting point
X + Y = 26.2
3X = Y
Substitute the value of Y into the equation
x + 3x = 26.2
4x = 26.2
Divide each side by 4
x = 6.55
If x = 6.55, then y = 6.55 * 3 = 19.65
X & y together should be 26.2
6.55 + 19.65 = 26.2
Success!
.
Do you know where Radcliffe set her record?  2003 London Marathon.