I am running my first 50K in March and my second marathon in May. Those two events are set in stone. I would also like to repeat two races I did last winter, a 30K and a 20-miler. So the calendar looks like this:

February 26th: 20 miles

March 19th: 50K

March 26th: 30K

May 15th: 26.2

For the 20-miler and 30K I could also run the shorter distances they offer or not run at all. I was thinking the 20-miler would make a good taper or long (with distance added) run for the 50K - or is it getting too close to the 3-19 race? And a 30K a week after a 50K would almost certainly be pushing it. I'd feel bad if I couldn't do it but on the other hand I've always wanted to volunteer at an aid station. Should I run that day at all? I'm a 48-year-old female who has been running for two years, if that makes any difference. Any viewpoints welcome!