The Book of Dreams sees Cook offering 47 of G Adventure’s most popular tours across all seven continents.
The range will be sold exclusively at Thomas Cook and Co-operative Travel stores.
Trips vary from an eight-day biking tour in Cuba to a 54-day rail journey across India.
Cook said the new collection was pitched at customers "looking for a once in a lifetime adventure."
Thomas Cook and G Adventures’ The Book of Dreams touring range leads in from £549pp for its Morocco Kasbahs &Desert itinerary with prices peaking at its Spirits of Shackleton tour onboard the G Expedition which is available from £7,999pp taking in the Falklands and Antarctic Peninsula.