Running33:00  6.4 km (5:09 / km) shoes: Nike Zoom Pegasus 33
Running20:00  4.3 km (4:39 / km) shoes: Nike Zoom Pegasus 33
Pairs relay, catching up then tagging your partner for 20 minutes. Basically 2.30 efforts followed by similar v slow jog recovery.
Felt very flat prior, and pretty flat during, but glad to get it done, have to start somewhere