1st All-Out Time Trial

Did my first all-out time trial on the marsh trail last week. I meant to do 1-mile but went out way too fast and cut it off after 1/2 mile. Mostly because I had stopped breathing at the 0.4 mile mark. Ended up with 1:16/1:34 splits for a 2:50 1/2 mile. That works out to a 48.1 VDOT. I had been training at 43.0. Not sure I want to jump my pace up that much in training. The easy/long pace is likely fine -- it's 8:30 and I did 8 miles Monday at 8:13 out and 8:34 back (it's a bit downhill out and then uphill back) -- but the tempo pace is likely too much. I'll give it a shot tomorrow on a controlled treadmill run and see how it goes.