Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialAdam G Shapiro
#689 · 1:11:20 · M25 · Group SCR · DR
Wave start 8:52 AM (SCR-DR)
Athlete B
OfficialGregg Walker
#693 · 1:21:39 · M58 · Group P · DR
Wave start 8:42 AM (P-DR)
Interpretation
Adam (SCR-DR) started at 8:52 AM; Gregg (P-DR) started at 8:42 AM. That gave Gregg a 10 minutes head start on Adam. On foot, Adam ran 1:11:20 and Gregg ran 1:21:39 — Adam was 10:19 faster than Gregg. Adam took official place 689th (time-based 360th) and Gregg took official place 693rd (time-based 696th). Adam was faster on foot and finished ahead on the official clock too. Biggest swing: Adam gained 4:43 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Gregg Walker (P-DR) started 10 min earlier than Adam (SCR-DR).
- Overall place Δ
- -4
- Actual time Δ
- -10:19
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 10 min (Gregg earlier)
- Finish clock Δ
- -0:19
- Section place Δ
- -13
Δ = Adam − Gregg. Negative means Adam is ahead/faster.
Race timeline
Computed- Gregg (P-DR) started at 8:42 AM.
- Adam (SCR-DR) started at 8:52 AM, 10:00 later.
- Actual running time: Adam was 10:19 faster on foot than Gregg.
- Finish clock: Adam crossed the line 0:19 ahead of Gregg — Adam wins this head-to-head.
Δ (A − B): actual -10:19 · finish clock -0:19.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Adam | Gregg | Δ |
|---|---|---|---|
| Start to Top of Stairs | 8:28 | 9:54 | -1:26 |
| Stairs to Windy Gap | 6:07 | 7:13 | -1:06 |
| Windy Gap to Muir Woods | 6:15 | 6:28 | -0:13 |
| Muir Woods to Cardiac | 27:04 | 31:47 | -4:43 |
| Cardiac to White Gate | 14:49 | 16:08 | -1:19 |
| White Gate to The Stile | 6:53 | 7:53 | -1:00 |
| The Stile to Finish | 1:44 | 2:16 | -0:32 |
Δ negative = Adam ran the segment faster.