Is it worth to do a time trial after 1 day of cross training to check how much better I can do than in the race?
Is it worth to do a time trial after 1 day of cross training to check how much better I can do than in the race?
No. A bad race can be frustrating and leave you feeling like you had more to give but you're almost certainly going to run slower. Enter a race the next weekend and try again.