Final answer:
Sarah's first jump is 4.25 meters long. Between Sarah's 5000 m run and Laura's 10k (10,000 meters) run, Laura will be running the longer distance.
Step-by-step explanation:
The length of Sarah's first jump in the long jump competition is 4.25 meters. To determine who would be running a longer distance between Sarah and Laura, we need to compare the distances they are running. Sarah will be running the 5000 m event and Laura will be participating in the 10k, which is equivalent to 10,000 meters. Therefore, Laura will be running the longer distance as 10,000 meters is greater than 5000 meters.