PUT your trainers on because a popular run is to return this weekend – and it will be the biggest ever.

More than 650 runners are expected to flock to Southampton Airport on tomorrow to take part in this year’s Runway Run.

The 5k run will start at 6am and will finish by 7am so the runway can be cleared ready for commercial flights of the day to begin.

For the second year running all proceeds will go Hampshire and Isle of Wight Air Ambulance (HIOWAA) which is the airport’s charity of the year.

Organisers said this year’s event will be the biggest ever with 700 people taking part.