Fill in the details from your home postcode to RH11 9RX here for a full route plan www.theaa.com/travelwatch/planner_main.jsp but for an edited version;
Approx. 68 miles; 1 hour 20 minutes.
Sat. Nav. RH11 9RX
From the M25 take the M23 Southbound towards Gatwick Airport and Brighton. At the end of the M23 (before it becomes the A23) leave the motorway at the last exit, Junction 11 (sign posted A264 Horsham, Pease Pottage Services). At the island at the end of the motorway slip road turn right onto the A23 going towards Crawley.
Just as you approach the next traffic island (which on my visit had a large red and white football on it) you can see the stadium on your left. Turn left at the roundabout and then left again for the entrance to the stadium car park, which did cost £2, or Otherwise street parking.
Please note that after the end of the game it can take quite a while to exit the stadium car park. So if you are looking for a quick getaway after the game, it may be an idea to street park instead.
(Directions supplied by www.footballgroundguide.com)
Maps
(For a wider map, http://maps.google.co.uk/, search Broadfield Stadium)
(Stadium: To the left of bottom left, opp. A23)