Rio Bravo MX Park April 23 1978Rio Bravo MX ParkHouston, TX 250MX Results 125MX Results Results Home 1978 Results Rio Bravo MX Park Live & On-Demand Learn More * all times Check back for a full broadcast schedule closer to the race. 1978125MXFull Results MarkBarnett1st WarrenReid2nd BrocGlover3rd 1978250MXFull Results BobHannah1st JimPomeroy2nd JimmyEllis3rd