The Roamies collection features 50 hostels with tours due to start on 8 May 2022. All trips are now on sale.
The operators have plans to add more tours to the portfolio across further locations in the future.
Tours are priced from £149pp for a three-day trip, and countries featured include Albania, Austria, Cambodia, Costa Rica, Croatia, Czech Republic, Germany, Greece, Italy, Mexico, Montenegro, the Netherlands, Peru, Thailand, and Vietnam.
The Peruvian Coast: Seafood, Sandboarding and Dune Buggies five-day tour departs from Lima and costs £449pp.
A South East Asia Trifecta – Vietnam, Cambodia, and Bangkok trip begins with a street food crawl through Ho Chi Minh City before a motorbike ride to explore the Mekong delta. Prices start at £699 for 11 days.
Central Mexico and Yucatan: Mexico City, Oaxaca, Oh Yeah is a 13-day tour with stops in Mexico City, Puebla, Oaxaca, Merida, Chichen Itza and Tulum. Fares come in at £1,249pp.
The 17-day Gotta-See Europe: Germany, Austria, Italy - Amsterdam to Rome itinerary is priced from £2,099pp.
G Adventures’ founder, Bruce Poon Tip, believes the traveller has "changed" following the pandemic, and the partnership with Hostelworld was "born out of the desire to create something entirely new" for younger travellers.
"We’ve always had great respect for Hostelworld – it’s an amazing company with an incredible commitment to the advancement of travel, a quality we appreciate and share," he added.
"The pandemic gave us the opportunity to act like a start-up again. As we learned more about Hostelworld’s business, we realised there was an opportunity to create something special by bringing our brands together to create the perfect mix of backpacking and organised travel."