Crystal Palace (Selhurst Park) is about 47–48 miles from Brighton (Brighton & Hove Albion’s Falmer area) by road, depending on the exact start and end points and the chosen route. Straight-line distance is roughly 40–45 miles, but road travel is typically around 47 miles and takes roughly 1 to 1.5 hours by car, depending on traffic. If you need the fastest current train times or the best travel options, I can look up the latest schedules.