Chicago, Ill. — Registration for the 2027 Bank of America Chicago Distance Series opened Tuesday, September 15, 2026. The series, now in its fifth year, will feature three events: the Shamrock Shuffle 5K, the Chicago 13.1‑mile race, and the Chicago Marathon.
The opening of registration was announced by Carey Pinkowski of the Bank of America Chicago Distance Series. Pinkowski confirmed that the three races will follow the same format as previous years, with the Shamrock Shuffle scheduled as a 5‑kilometer road race, the Chicago 13.1 set at a half‑marathon distance of 13.1 miles, and the full marathon covering the traditional 26.2‑mile course through the city.
Athletes interested in competing can sign up through the series’ official website beginning on Tuesday. The registration portal will remain open for several weeks, allowing runners of all abilities to enter the events. The series has historically attracted both local and out‑of‑state participants, and the 2027 edition is expected to continue that trend.
The 2027 calendar places the Shamrock Shuffle in early spring, followed by the Chicago 13.1 in the summer months, and culminates with the Chicago Marathon in the fall. Organizers have not released specific race dates yet, but they indicated that detailed schedules will be posted as the registration period progresses.
The Bank of America Chicago Distance Series is a key component of the city’s running calendar and contributes to local sports tourism and community engagement.