Related Clues:
- Clock reading
- Life partner?
- Rate of progress
- Go back and forth
- Dueler's distance
- Sprinter's concern
- Hawking's ''A Brief History of ___''
- Certain healer
- Runner's rhythm
- Appeal to the ump
- Marathon measure
- Word with study or bomb
- Entertainment giant __ Warner
- With 16-Across, an abbr. for one is hidden in each 15-letter answer
- Rate of work