Activists from Boston opposed to the city's bid for the 2024 summer games have written to the U.S. Olympic Committee to voice their opposition.

In a letter mailed Monday, No Boston Olympics says hosting the games will be a $10 billion to $20 billion undertaking that will threaten the state's ability to make investments in health care, education and transportation.

The group says Boston would have to build from scratch a new Olympic stadium, velodrome, aquatics center, and Olympic Village.

The groups says it will be providing more information to the USOC about the "troubling weaknesses and flaws" of the Boston bid and the "strong and growing opposition" to it from Massachusetts voters.

Los Angeles, Washington, D.C. and San Francisco are among the other American cities in the running.