the run is 5 miles... did 2 miles after my ride yesterday, legs felt great, but i just couldn't get into a breathing rhythm, so will definately practice that transition again. Mind you, my 21mph avg is in a stand alone time trial. Like i said above it is my first triathlon (800m, 17.2mi, 4.9mi). So, i will probably shoot for 19 or 19.5 to be honest on the bike. Just don't want to end up walking the run portion haha