tough chair for a tough race

I broke my neck when I was 14 and it left me a quadriplegic, ever since than I've loved pushing myself and doing things people say I couldn't or wouldn't be able to do. I do rugby, bike, basketball and several other activities and next on my list is the tough mudder.  To make this happen a need a heavey duty chair. I'm doing this go fund me to raise money for an all terrain chair to handle these hardcore obstacles. Thanks in advance