March to the Brazos is the culminating event in the Corps spring fundraising campaign for local charities. In previous years, the money raised was donated to the March of Dimes and it was decided in 2019 that the funds would go to local charities that benefit the Brazos Valley community. The cadets have raised thousands of dollars over the years in an effort to live by the Aggie core value of selfless service. Each spring semester, the Corps of Cadets march nine miles to the Brazos River from their dorms on campus.
Once at the Brazos River, the cadets participate in various athletic and military competitions, have a catered lunch, then receive awards for those units that have raised the most money for that year. The day concludes with the new leadership of the Corps for next year leading the nine-mile march back to campus.