I am due to do my second 10 mile race of the year on Sunday week 23 March. I've been training regularly and hard. This week I am just bunched and finding each run a total slog! I went out on a tempo run (a fast 10K) last night and had to cut it short as legs were dead. I did my last long run (10 miles) last Sat and would be due to do my last long run before the race this weekend. I don't know if I have it in me and am just wondering if I am better off just resting completely and taking a few days off before the race day? I'm very active and fit and have been running for over 3 years so general fitness is not a problem - just general exhaustion..! Thank You.
Yes, definitely rest. I'm doing HM on Sun. I did my last long run on Saturday (but cut the mileage considerably from the previous week) a short (10k is too far IMO this close to a race) tempo run on Sunday an easy hour on Tues eve and will do another easy run tonight. No more running after that until race day.
If you do a long run this weekend make it around 50% your previous long run (so not really a long run!) No more fast runs until the race.
TBH if you do no more running at all until the race it will be better than doing to much.