Generate a response that expresses surprise for the following statement.
He ran a marathon in two hours.
Wow, that's incredible! Running a marathon in two hours is an impressive feat.
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate a response that expresses surprise for the following statement.

### Input:
He ran a marathon in two hours.

### Output:
Wow, that's incredible! Running a marathon in two hours is an impressive feat.