Sustainable Travel International

About Us and our Mission:

Sustainable Travel International (STI) is a global leader in sustainable tourism development. The 501(c)(3) non-profit organization’s mission is to promote sustainable development and responsible travel by providing programs that enable consumers, businesses and travel-related organizations to contribute to the environmental, socio-cultural and economic values of the places they visit, and the planet at large.

STI is dedicated to providing education and outreach services that will lessen the toll that travel and tourism takes on the environment and local cultures. By providing tangible, solutions-oriented programs, STI is taking a holistic approach to addressing sustainable development within the travel and tourism industry.

Contact Us:

U.S. Operations

Email: info@sustainabletravel.com [1]
Mailing Address:
Sustainable Travel International
P.O. Box 1313
Boulder, CO 80306 USA
US Phone: 800-276-7764
Business Hours: 8am-5pm, MST (GMT-7)

U.K. Operations

Email: peterk@sustainabletravel.com [2]
UK Phone: +44 (0)779-931-1228
Business Hours: 8am-5pm, GST