Going back to back

The Crows won back-to-back premierships in 1997-1998. But that's not what I am talking about here.
Some think having back-to-back speed days is risky. The speedygeese train Sunday mornings at Stromlo (long intervals) and Monday evenings at Parliament House (short intervals or hill intervals) and some think that's too much. But I point out that there is a day and a half between those sessions. And they complement each other.
That's still not what I'm talking about. A day and a half is not really back-to-back.
Real back-to-back runs are closer than that and train the muscles to handle fatigue resistance.

Here are two forms of back-to-back running.

1. Run 15k in the evening and 20k the next morning. This splits a long run into two parts, and you can eat and sleep in between.
2. Run tempo or intervals in the evening, and a long run the next morning

I got back to fitness ten to fifteen years ago by running Parliament House hard on Monday evenings, then a long run on the next morning with the "Tuesday Group".It was a challenge for a while, but the body quickly adapted.

My next challenge along these lines will be a leg strength work-out in the gym, followed by a long run. The legs will start the run very tired, but it will be worth it.

Do it, and remember to recover properly afterwards!