This project proposes using a two-armed, waitlist controlled trial to test the effectiveness of peer-facilitated travel interventions and their ability to enhance community mobility and increase feelings of self-efficacy in individuals with serious mental illness (SMI). The first intervention arm is an 8-week bikeshare intervention, which consists of individual trainings on using a bike sharing program; the second intervention arm is an 8-week public transportation intervention, which consists of individual trainings for using public transportation in the Philadelphia area. The investigators seek to enroll a total of 180 individuals from community mental health agencies in the Philadelphia area and expect recruitment to take 3 years. Eligible participants will be individuals who meet criteria indicating that they have an SMI, are between the ages of 18-65, and are both willing and able to learn to use public transportation and ride a bicycle. Data will be collected via face-to-face or web-based video call interviews at 3 time points: baseline, 2-months post-baseline, and 4-months post-baseline. Participants will also complete short surveys about their travel behaviors over the phone in the seven days after each interview. There will also be a subsample of participants who will provide additional GPS data.