Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialDavid W Erskine
#1375 · 2:38:57 · M76 · Group AAA · DR
Wave start 8:27 AM (AAA-DR)
Athlete B
OfficialChristina Walker
#1380 · 2:31:20 · F47 · Group M · DR
Wave start 8:40 AM (M-DR)
Comparison report
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The PDF includes the interpretation, deltas, race timeline, position-through-the-course chart, and segment-by-segment splits shown below.
Interpretation
David (AAA-DR) started at 8:27 AM; Christina (M-DR) started at 8:40 AM. That gave David a 13 minutes head start on Christina. On foot, David ran 2:38:57 and Christina ran 2:31:20 — Christina was 7:37 faster than David. David took official place 1375th (time-based 1376th) and Christina took official place 1380th (time-based 1369th). David's head start was enough to flip the official order even though Christina was faster on foot. Biggest swing: David gained 6:04 from Muir Woods to Cardiac.
Deltas
ComputedWave start
David W Erskine (AAA-DR) started 13 min earlier than Christina (M-DR).
- Overall place Δ
- -5
- Actual time Δ
- +7:37
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 13 min (David earlier)
- Finish clock Δ
- -5:23
- Section place Δ
- -27
Δ = David − Christina. Negative means David is ahead/faster.
Race timeline
Computed- David (AAA-DR) started at 8:27 AM.
- Christina (M-DR) started at 8:40 AM, 13:00 later.
- Actual running time: Christina was 7:37 faster on foot than David.
- Finish clock: David crossed the line 5:23 ahead of Christina — David wins this head-to-head.
Δ (A − B): actual +7:37 · finish clock -5:23.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | David | Christina | Δ |
|---|---|---|---|
| Start to Top of Stairs | 16:20 | 11:25 | +4:55 |
| Stairs to Windy Gap | 12:34 | 8:48 | +3:46 |
| Windy Gap to Muir Woods | 16:01 | 13:49 | +2:12 |
| Muir Woods to Cardiac | 49:58 | 56:02 | -6:04 |
| Cardiac to White Gate | 38:03 | 36:21 | +1:42 |
| White Gate to The Stile | 20:27 | 20:00 | +0:27 |
| The Stile to Finish | 5:34 | 4:55 | +0:39 |
Δ negative = David ran the segment faster.