2 weeks before the race we got up at the crack of dawn, brought an engineer with us, and measured the last mile, with excruciating detail to hugging the tangents. We used a Stanley 100 foot steel measuring tape. The Monday before the race we had to get the course pre-certified by two IAAF measurers. Due to traffic flow, we had to measure course backwards, and I took note of "their" mile, and it was within a foot of our measurement. Bill and I personally put down the 1600-1200-800-400 signs on race morning, and I can assure you they were in the right spots. The bridge is approximately 150 feet above the finish at the peak. So we can quibble 10 feet or so about the elevation, I guess. And note, we marked 1600 to go, not 1609, so you need to add 2 seconds or so .. But go back and watch the tape, it was easily sub-4:00 ... And I have never been more sure about the measurement of a mile. For runner of True caliber to run sub-4:00 on a 150 foot drop while breaking for the win is not that implausible. Sub-4:00 sounds cool .. In reality, it probably would have been 4:15 or so on the flats. But, who gives a damn ? It was a really great race and cool finish, and it will be fun watching these two go at it this spring and summer.