Alan, this is certainly a gap in our 80/20 literature, and as I think about it a common question. We’ll get something formal to address this.
In general, we recommend the following:
– After a half marathon, no running for a week. Maybe 2-4 hours of cross-training as you feel, but taking the week completely off would be just fine.
– After a marathon, no running for two weeks, again 2-4 hours a week of cross-training as you feel. Taking the first week completely off would be acceptable.
If you have another event taking place less than 8 weeks after the marathon, the two weeks recovery can be compressed down to one week, but use those exceptions wisely.
David