Hallux rigidus doesn’t have to ruin your running. If you take precautions and ensure your toe is protected, you can continue running with minimal pain and discomfort.
You should get shoes with a roomy toe box so that your toe can rest naturally without being cramped. Your shoes should also support your arch, so your body weight is evenly distributed.
However, if you have pain while running, you should take a break and reassess. Make sure that your foot is well-supported and protected.