For the in-person events, registration is at UltraSignUp: https://ultrasignup.com/register.aspx?did=107700
For the virtual events, registration is at RunSignUp: https://runsignup.com/Race/ME/Freeport/FarmtoFarmUltra
For the virtual events, registration is at RunSignUp: https://runsignup.com/Race/ME/Freeport/FarmtoFarmUltra