The women's time trial class C4-5 track cycling event at the 2024 Summer Paralympics took place on 29 August 2024 at the Vélodrome National at Saint-Quentin-en-Yvelines .

This combine class (C4-5) under classification C is for cyclists who have impairments that affect their legs, arms, and/or trunk but are still capable to use a standard bicycle.

[1] The classifications are described as follows: Source:[2] The competition begins with a qualification round, where the 13 cyclists will compete in pairs against the clock.

She arrives off the back of a difficult year that included a series of injuries and a relapse in her Multiple sclerosis condition, but also as the reigning world champion in her C4 category, and with no 'divided loyalties' as Cox was not selected for the athletics squad on this occasion.

The time gap between Cox and Groot in the 2024 World championships - approximately 3 tenths of a second - means that factoring may have a crucial role to play in the final results.