Across:
   1,27. 16dn, say, managing function remotely? (4 8 7 5)
   8. Often found around present 22 from 27s (7)
   9. Captures wayward parents (7)
  11. State returned with tooth fairy savings (5)
  12. Regulation iodine found in munitions (9)
  13. Hypocrite has an easy run (6)
  14. Convenient restriction declared for this type of race (8)
  17. Chaos in second half of coup - he gets result of eruption coming back (8)
  19. Track ace lost hundreds getting thrashed in combative competition (6)
  22. Stay awake around fast food outlets (9)
  24. Heart attack experienced on key part of circuit (5)
  25. The Jewry I'd dishonour using such language! (7)
  26. Odds on, they'll show at the races (7)
  27. see 1
Down:
   1. No energy in thin barley soup - you can't find much in it at all (9)
   2. None eat more messily than the youngest (7)
   3. Posted letters to leader (6)
   4. Turn profound and convince about type of race (8)
   5. Odd members burnt fart - it burnt ends in sync (7)
   6. The distance that imposes tyranny (5)
   7. Interbreed with rural type of race (5 7)
  10. Sees the place in 17ac. type of race (12)
  15. Initially challenged, her helpful flight takes her to the head of the run (9)
  16. No harm at running this type of race? (8)
  18. A brain, a plan, and a good horse for 1 ac. (7)
  20. Terrible woe is me - a disgrace - I leave! (7)
  21. Superpower combined with noblest heart - could be handy (6)
  23. Finally track you and quiz you ... typically over running we hear? (5)