Intervals today, a tough but very satisfying session. 10x400m with 200m walking recovery with 15 minutes warm up and cool down. Ran the first 5 at goal km pace and the last 5 a little quicker. Last run in my 50’s so well happy with that #running #intervalrunning #400mrepeats #polarrunning #adidasrunning #runnersofmastodon #RunningCommunity #oldguysrule