Final answer:
The figurative language used in the statement 'running a marathon was her Mt. Everest' is metaphor.
Step-by-step explanation:
The figurative language used in the statement 'running a marathon was her Mt. Everest' is metaphor. A metaphor directly compares two unlike things without using 'like' or 'as'. In this example, the comparison is made between running a marathon and Mt. Everest, suggesting that running a marathon is a daunting and challenging task, just like climbing Mt. Everest. This metaphor adds depth and imagery to the statement