There is no mileage rating on brake pads. It is all up to the driving conditions. If you do a lot of highway driving and never have to go through stop and go traffic, then I have seen pads last over 100,000 miles. If you do a lot of stop and go driving, then they can burn up in as little as 15,000 miles. It also depends how you brake. Do you wait to the last second and then brake hard or do you progressivly stop. A lot of people also have a bad habit of driving with their foot on the brake pedal which will also wear them out quickly.
Depends on how you use the vehicle. I have had front pads usually last for around 30,000 miles but I have also had them go in 3,000 miles when I was delivering newspapers on what is called a motor route, delivering to close to 300 customers in a rural area within 3 hours. I got so good at changing the pads that I could change one wheel in 10 minutes.
If you drove mostly on the interstate highways then pads could last 100,000 or more.
Your Honda dealer offers free brake inspections.
I'd expect double that mileage before needing replacement.
As mentioned a lot has to do with your driving habits.
Go read up on how brakes work on modern vehicles so that you have a better understanding of what to expect as they wear and when talking with the service adviser.