Intrepid Travel and G Adventures are very similar in their product offerings, both offering a wide range of destinations and tour types. Intrepid has over 1,000 tours to over 100 counties, so it does exceed G Adventures’ 700 tours, if range is a factor.
Price-wise, both operators are pretty much on par with each other, but if you are comparing a similar itinerary, do check what inclusions are featured as some Intrepid packages include more bang for your buck than G Adventures.