Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialSibley McMonsef
#418 · 1:23:02 · F11 · Group K · INV
Wave start 8:11 AM (K-INV)
Athlete B
OfficialGeorge A Dombrovski
#422 · 1:33:11 · M73 · Group AA · INV
Wave start 8:01 AM (AA-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
Sibley (K-INV) started at 8:11 AM; George (AA-INV) started at 8:01 AM. That gave George a 10 minutes head start on Sibley. On foot, Sibley ran 1:23:02 and George ran 1:33:11 — Sibley was 10:09 faster than George. Sibley took official place 418th (time-based 740th) and George took official place 422nd (time-based 967th). Sibley was faster on foot and finished ahead on the official clock too. Biggest swing: Sibley gained 3:05 from Muir Woods to Cardiac.
Deltas
ComputedWave start
George A Dombrovski (AA-INV) started 10 min earlier than Sibley (K-INV).
- Overall place Δ
- -4
- Actual time Δ
- -10:09
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 10 min (George earlier)
- Finish clock Δ
- -0:09
- Section place Δ
- +7
Δ = Sibley − George. Negative means Sibley is ahead/faster.
Race timeline
Computed- George (AA-INV) started at 8:01 AM.
- Sibley (K-INV) started at 8:11 AM, 10:00 later.
- Actual running time: Sibley was 10:09 faster on foot than George.
- Finish clock: Sibley crossed the line 0:09 ahead of George — Sibley wins this head-to-head.
Δ (A − B): actual -10:09 · finish clock -0:09.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Sibley | George | Δ |
|---|---|---|---|
| Start to Top of Stairs | 9:01 | 11:40 | -2:39 |
| Stairs to Windy Gap | 7:40 | 8:48 | -1:08 |
| Windy Gap to Muir Woods | 6:57 | 7:30 | -0:33 |
| Muir Woods to Cardiac | 32:40 | 35:45 | -3:05 |
| Cardiac to White Gate | 16:10 | 18:08 | -1:58 |
| White Gate to The Stile | 8:09 | 8:41 | -0:32 |
| The Stile to Finish | 2:25 | 2:39 | -0:14 |
Δ negative = Sibley ran the segment faster.