**Option 1: Mid-race bike change**
Many cyclocross riders switch bikes mid-race due to build-up of mud and debris and the dirt emulsion which accumulates on braking surfaces. Ideally you would have an assistant to supervise your belongings in the pit/service area and rinse the bike you've returned to prepare it for another bike change later in the race.
**Option 2: Thicker rim-walls**
Some rims claim to have thicker braking surfaces. You may identify these based on the difference between the external rim width and the ETRTO bead width (e.g 622-17 indicates a 17mm bead width)
**Option 3: Brake less**
Improving your cornering at speed so you don't need to brake so much.