how fast should i run before a marathon
In the fast finish long run, start by running just the last three to five miles fast and on each successive fast finish long run, increase the distance of the fast part so that 3-4 weeks before your marathon, you run a 20-22 miler with the last 9-12 miles at a faster and faster pace.ow to Implement. While I recommend a two-hour long, steady run virtually year round for most runners, you should not start the fast finish long runs until 8-10 weeks before the marathon. Too many of these workouts and you will peak too soon and be flat by marathon day.