i'm doing my first marathon in April, targeting to scrape under 4 hours. Trainng going ok with a mix of long slow runs ( so far up to 19 miles) , many shorter at easy pace and occasional tempo pace.
Planning a HM tune up race 3 weeks before the marathon. Should I just be targeting the HM close to 2 hours as a marathon pace session or push closer to my usual sub 1:50 HM time?
any advice appreciated