Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialSandra M Holbrook James
#311 · 1:23:53 · F58 · Group F · INV
Wave start 8:07 AM (F-INV)
Athlete B
OfficialAlex Katz
#316 · 1:06:59 · M29 · Group Z · INV
Wave start 8:24 AM (Z-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
Sandra (F-INV) started at 8:07 AM; Alex (Z-INV) started at 8:24 AM. That gave Sandra a 17 minutes head start on Alex. On foot, Sandra ran 1:23:53 and Alex ran 1:06:59 — Alex was 16:54 faster than Sandra. Sandra took official place 311th (time-based 763rd) and Alex took official place 316th (time-based 231st). Sandra's head start was enough to flip the official order even though Alex was faster on foot. Biggest swing: Alex gained 4:46 from Cardiac to White Gate.
Deltas
ComputedWave start
Sandra M Holbrook James (F-INV) started 17 min earlier than Alex (Z-INV).
- Overall place Δ
- -5
- Actual time Δ
- +16:54
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 17 min (Sandra earlier)
- Finish clock Δ
- -0:06
- Section place Δ
- -32
Δ = Sandra − Alex. Negative means Sandra is ahead/faster.
Race timeline
Computed- Sandra (F-INV) started at 8:07 AM.
- Alex (Z-INV) started at 8:24 AM, 17:00 later.
- Actual running time: Alex was 16:54 faster on foot than Sandra.
- Finish clock: Sandra crossed the line 0:06 ahead of Alex — Sandra wins this head-to-head.
Δ (A − B): actual +16:54 · finish clock -0:06.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Sandra | Alex | Δ |
|---|---|---|---|
| Start to Top of Stairs | 10:04 | 7:53 | +2:11 |
| Stairs to Windy Gap | 7:16 | 6:08 | +1:08 |
| Windy Gap to Muir Woods | 7:35 | 5:28 | +2:07 |
| Muir Woods to Cardiac | 29:58 | 25:56 | +4:02 |
| Cardiac to White Gate | 17:54 | 13:08 | +4:46 |
| White Gate to The Stile | 8:40 | 6:41 | +1:59 |
| The Stile to Finish | 2:26 | 1:45 | +0:41 |
Δ negative = Sandra ran the segment faster.