Unfortunately there is a lot of walking required to reach those seats. Row 25 is the second to last row in the section, so you will have to walk up about 20 stairs once you enter the section. The main stadium entrance is relatively close to this section, as it is located near Section 101.

Parking is a nightmare at Gillette Stadium, but there is ADA parking right near the main entrance. As long as you have a government-issued placard, you will be able to park in this lot, which will drastically cut down on your walk from the car to the stadium.

Section 337 Row 25 Seating Location at Gillette Stadium
Seats in Row 25 are in the second to last row, leaving a significant walk up from the section entry tunnel which is located just above Row 7