Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialCeline van Riemsdijk
#1378 · 2:27:57 · F43 · Group P · DR
Wave start 8:42 AM (P-DR)
Athlete B
OfficialDavid W Erskine
#1375 · 2:38:57 · M76 · Group AAA · DR
Wave start 8:27 AM (AAA-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
Celine (P-DR) started at 8:42 AM; David (AAA-DR) started at 8:27 AM. That gave David a 15 minutes head start on Celine. On foot, Celine ran 2:27:57 and David ran 2:38:57 — Celine was 11:00 faster than David. Celine took official place 1378th (time-based 1364th) and David took official place 1375th (time-based 1376th). David's head start was enough to flip the official order even though Celine was faster on foot. Biggest swing: Celine gained 5:34 from Cardiac to White Gate.
Deltas
ComputedWave start
David W Erskine (AAA-DR) started 15 min earlier than Celine (P-DR).
- Overall place Δ
- +3
- Actual time Δ
- -11:00
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 15 min (David earlier)
- Finish clock Δ
- +4:00
- Section place Δ
- +30
Δ = Celine − David. Negative means Celine is ahead/faster.
Race timeline
Computed- David (AAA-DR) started at 8:27 AM.
- Celine (P-DR) started at 8:42 AM, 15:00 later.
- Actual running time: Celine was 11:00 faster on foot than David.
- Finish clock: David crossed the line 4:00 ahead of Celine — David wins this head-to-head.
Δ (A − B): actual -11:00 · finish clock +4:00.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Celine | David | Δ |
|---|---|---|---|
| Start to Top of Stairs | 13:40 | 16:20 | -2:40 |
| Stairs to Windy Gap | 10:48 | 12:34 | -1:46 |
| Windy Gap to Muir Woods | 15:20 | 16:01 | -0:41 |
| Muir Woods to Cardiac | 52:30 | 49:58 | +2:32 |
| Cardiac to White Gate | 32:29 | 38:03 | -5:34 |
| White Gate to The Stile | 18:40 | 20:27 | -1:47 |
| The Stile to Finish | 4:30 | 5:34 | -1:04 |
Δ negative = Celine ran the segment faster.