Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialLaura McDonald
#1319 · 2:08:38 · F53 · Group J · DR
Wave start 8:37 AM (J-DR)
Athlete B
OfficialBruce S Cohen
#1320 · 2:07:49 · M63 · Group K · DR
Wave start 8:38 AM (K-DR)
Interpretation
Laura (J-DR) started at 8:37 AM; Bruce (K-DR) started at 8:38 AM. That gave Laura a 1 minute head start on Bruce. On foot, Laura ran 2:08:38 and Bruce ran 2:07:49 — Bruce was 0:49 faster than Laura. Laura took official place 1319th (time-based 1327th) and Bruce took official place 1320th (time-based 1323rd). Laura's head start was enough to flip the official order even though Bruce was faster on foot. Biggest swing: Laura gained 6:14 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Laura McDonald (J-DR) started 1 min earlier than Bruce (K-DR).
- Overall place Δ
- -1
- Actual time Δ
- +0:49
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 1 min (Laura earlier)
- Finish clock Δ
- -0:11
- Section place Δ
- -11
Δ = Laura − Bruce. Negative means Laura is ahead/faster.
Race timeline
Computed- Laura (J-DR) started at 8:37 AM.
- Bruce (K-DR) started at 8:38 AM, 1:00 later.
- Actual running time: Bruce was 0:49 faster on foot than Laura.
- Finish clock: Laura crossed the line 0:11 ahead of Bruce — Laura wins this head-to-head.
Δ (A − B): actual +0:49 · finish clock -0:11.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Laura | Bruce | Δ |
|---|---|---|---|
| Start to Top of Stairs | 14:14 | 12:39 | +1:35 |
| Stairs to Windy Gap | 11:01 | 9:21 | +1:40 |
| Windy Gap to Muir Woods | 11:42 | 9:49 | +1:53 |
| Muir Woods to Cardiac | 42:11 | 48:25 | -6:14 |
| Cardiac to White Gate | 30:45 | 29:23 | +1:22 |
| White Gate to The Stile | 15:15 | 14:57 | +0:18 |
| The Stile to Finish | 3:30 | 3:15 | +0:15 |
Δ negative = Laura ran the segment faster.