Roam Fitness has opened a 1,175sq ft (109sq m) gym at Baltimore-Washington International Airport in Maryland, US, with its sights set on opening 20 more clubs at airports, including London Heathrow.

The Baltimore-Washington club has space for up to 21 people and includes a range of cardio equipment, free weights and designated stretching space. Travellers can store their carry-on luggage and personal belongings while also charging their mobile devices.

All members have access to private shower rooms with complimentary towels and shower products. Membership also includes complimentary rental of lululemon clothing and Brooks Adrenaline GTS 17 running shoes.

Discounted introductory membership will be US$25 (£20; €23) for a day pass, US$150 (£119; €140) for a monthly pass and US$500 (£398; €467) for the year.

Roam Fitness is in talks to open gyms at other US airports in Charlotte Douglas International in North Carolina, Pittsburgh International in Pennsylvania and Hartsfield-Jackson International in Georgia. According to the company's website it also has its sights on gyms at more than 20 other airports, including London Heathrow.

Airmall Maryland manages retail, food and beverage operations at Baltimore-Washington airport. Its vice president, Brett Kelly, said: "Airmall Maryland seeks to make it easier than ever for travellers to stay active and maintain their wellness goals. Roam Fitness gives passengers the opportunity to stay fit and fresh in an atmosphere designed for fun and movement."

Ricky Smith, the airport's chief executive officer, said: "We continue to emphasise fitness, nutrition and healthy options for our customers. This innovation will offer another way for our travellers on the go to stay active."