Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialIrvin A Rojas
#492 · 1:18:38 · M14 · Group V · INV
Wave start 8:20 AM (V-INV)
Athlete B
OfficialJoanna Chen
#497 · 1:23:11 · F28 · Group Q · INV
Wave start 8:16 AM (Q-INV)
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
Irvin (V-INV) started at 8:20 AM; Joanna (Q-INV) started at 8:16 AM. That gave Joanna a 4 minutes head start on Irvin. On foot, Irvin ran 1:18:38 and Joanna ran 1:23:11 — Irvin was 4:33 faster than Joanna. Irvin took official place 492nd (time-based 598th) and Joanna took official place 497th (time-based 745th). Irvin was faster on foot and finished ahead on the official clock too. Biggest swing: Irvin gained 2:03 from Cardiac to White Gate.
Deltas
ComputedWave start
Joanna Chen (Q-INV) started 4 min earlier than Irvin (V-INV).
- Overall place Δ
- -5
- Actual time Δ
- -4:33
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 4 min (Joanna earlier)
- Finish clock Δ
- -0:33
- Section place Δ
- -25
Δ = Irvin − Joanna. Negative means Irvin is ahead/faster.
Race timeline
Computed- Joanna (Q-INV) started at 8:16 AM.
- Irvin (V-INV) started at 8:20 AM, 4:00 later.
- Actual running time: Irvin was 4:33 faster on foot than Joanna.
- Finish clock: Irvin crossed the line 0:33 ahead of Joanna — Irvin wins this head-to-head.
Δ (A − B): actual -4:33 · finish clock -0:33.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Irvin | Joanna | Δ |
|---|---|---|---|
| Start to Top of Stairs | 8:36 | 9:10 | -0:34 |
| Stairs to Windy Gap | 6:45 | 7:25 | -0:40 |
| Windy Gap to Muir Woods | 6:00 | 6:45 | -0:45 |
| Muir Woods to Cardiac | 31:26 | 31:59 | -0:33 |
| Cardiac to White Gate | 15:28 | 17:31 | -2:03 |
| White Gate to The Stile | 7:55 | 8:09 | -0:14 |
| The Stile to Finish | 2:28 | 2:12 | +0:16 |
Δ negative = Irvin ran the segment faster.