Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialJohn G Catts
#496 · 1:37:00 · M72 · Group A · INV
Wave start 8:02 AM (A-INV)
Athlete B
OfficialIrvin A Rojas
#492 · 1:18:38 · M14 · Group V · INV
Wave start 8:20 AM (V-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
John (A-INV) started at 8:02 AM; Irvin (V-INV) started at 8:20 AM. That gave John a 18 minutes head start on Irvin. On foot, John ran 1:37:00 and Irvin ran 1:18:38 — Irvin was 18:22 faster than John. John took official place 496th (time-based 1056th) and Irvin took official place 492nd (time-based 598th). Irvin was faster on foot and finished ahead on the official clock too. Biggest swing: Irvin gained 5:42 from Muir Woods to Cardiac.
Deltas
ComputedWave start
John G Catts (A-INV) started 18 min earlier than Irvin (V-INV).
- Overall place Δ
- +4
- Actual time Δ
- +18:22
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 18 min (John earlier)
- Finish clock Δ
- +0:22
- Section place Δ
- -27
Δ = John − Irvin. Negative means John is ahead/faster.
Race timeline
Computed- John (A-INV) started at 8:02 AM.
- Irvin (V-INV) started at 8:20 AM, 18:00 later.
- Actual running time: Irvin was 18:22 faster on foot than John.
- Finish clock: Irvin crossed the line 0:22 ahead of John — Irvin wins this head-to-head.
Δ (A − B): actual +18:22 · finish clock +0:22.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | John | Irvin | Δ |
|---|---|---|---|
| Start to Top of Stairs | 11:09 | 8:36 | +2:33 |
| Stairs to Windy Gap | 9:04 | 6:45 | +2:19 |
| Windy Gap to Muir Woods | 8:00 | 6:00 | +2:00 |
| Muir Woods to Cardiac | 37:08 | 31:26 | +5:42 |
| Cardiac to White Gate | 19:28 | 15:28 | +4:00 |
| White Gate to The Stile | 9:19 | 7:55 | +1:24 |
| The Stile to Finish | 2:52 | 2:28 | +0:24 |
Δ negative = John ran the segment faster.