Last nights "marathon simulation" was interesting - Aim was to hold about 75% of max HR (Karhoven) which is about 157 in the end I couldn't do it, first lap (of three) I hit 160 and just couldn't get it back down again so I treat it as a slightly-faster-than-marathon-pace-tempo-session. Average rate for the whole session was 160 and actually ran 10.5 km (6.5 miles) in 47 minutes flat whereas I think my marathon pace is porbably a bit slower. Over the next two weeks I intend to push this up to about 18 km at the same pace and see how it feels.
Why: Tired plus race on Sunday
Last hard day: Yesterday (although didn't feels that hard)
Last rest: last Friday.