I am on week 12 of a 21 week Garmin Marathon Plan with race day on May 4th. I'm in the build phase which runs for only another 3 weeks (until March 26th) So far my 'long runs' have been a maximum of 45 minutes or roughly 8.5km in total. I used Garmin Coach for two half marathons last year and both plans were excellent and had my long runs building up to c2hours on my feet. I am concerned that I'm not doing nearly enough long runs and I cannot see further than the next 6 days of training. Anyone have any similar experience and can shed some light? Thanks all.