Enough to get round - my OH used to do HMs off 2 runs a week: 5k on Weds, long run (up to 12-13 mi) on Sunday. Admittedly he has got faster now he runs more, but he got round them fine when that was all the running he did.
IBB, Martin I was going over a little of the TP on Sunday - beyond the railway bridge over the river behind Kennington it's very runnable, but before then, churned-up grass and mud, narrow ruts, and general Oxfordshire swamp all feature big-time. So TBH, IBB, provided you can still power hike you'll be all the pacer he needs, particularly if it's night.
You WILL be better eventually IBB. At least a bit. Like HRR & me who are both "not as crocked as we were". I know it is sooo frustrating. But new house!
KS there seems to be something going round (AGAIN).
Did 18 miles on Sunday, at a roaring 10:48 m/m (not counting stops) which is better than the 10:55 m/m (not counting stops, perhaps, one might think, less stringently than yesterday) the week before. *And* no pitstops. *And* all done on half a pint of blackcurrant squash. That last bit wasn't on purpose, I just wasn't very awake when I left the house so I didn't take any money with me.
The days of 9 minute miles seem quite distant but who knows ...