One among the several benefits of walking is that it reduces the sciatic pain. Doing it gently will give your body enough amount of cardio benefits, while also not stressing it out. It could be difficult to be slow if you had been used to a lot of weight training and running. But, it is really important to slow it down and walk on flat surfaces. The speed can vary between slow and moderate.
Walking reduces inflammation while releasing pain-killing endorphins. This will help relieve the sciatic pain. However, care must be taken because wrong or poor walking may worsen the condition. It can aggravate the sciatic nerve in particular.