- This event has passed.
2025 Boston Half Marathon: T20 Para Class for Intellectual Disability
November 9, 2025
In 2023 The Boston Athletic Association (BAA) made an important announcement when they added a competitive division for intellectual impairment which is open to Virtus II1/T20 runners with National or International classification.
The T20 Para Division is now offered at these annual BAA events:
The Boston 5K (April 19, 2025)
The Boston Marathon (April 21, 2025)
Boston 10k (June 22, 2025)
Boston Half (November 9, 2025)
ENTRY DEADLINE:
Regardless of the entry deadline all interested athletes with Intellectual Impairment should reach out since this is a newer offering and space may still be available for athletes with Virtus II1 – Para T20 National or International Classification.
- Full Scale IQ of 75 or lower on accepted IQ assessment WAIS, WISC, or Stanford Binet, and
- Adaptive Behavior significant limitations (70 or lower in at least one domain area) on accepted Vineland, ABAS or AAMR scales, and
- Onset before age 22
Those who require T20 National Classification should apply to Athletes Without Limits using our Athlete Eligibility Application (we will let Boston and U.S. Paralympics know when you’ve competed your Virtus II-1/Para T20 Classification review.



