The weather between the months of November and March are absolutely lovely in Kuwait and allow for one to go on long walks. These are some routes I have taken and the sites along them:

Gulf Road: there are so many interesting sites along Gulf Road, this walking route is certainly not fit for one day, but instead one can explore the places along the road over several different days: Al Salam Palace to Al Bahhar Village, National Assembly to Al Seif Staircase, Old Central Bank to Sheikh Khazal Palace

Sharq: the old maritime quarter of Kuwait City, here and here are two different routes

Mubarak Al Kabeer: walking Kuwait can be difficult, but this street is comparatively easier

Fahad Al Salem: my personal favorite street in Kuwait, it showcases the urbanization from the 1950s to the present through its different buildings