Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialRob Spinosa
#394 · 1:15:07 · M55 · Group T · INV
Wave start 8:18 AM (T-INV)
Athlete B
OfficialDavid T Lam
#397 · 1:10:15 · M41 · Group Y · INV
Wave start 8:23 AM (Y-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
Rob (T-INV) started at 8:18 AM; David (Y-INV) started at 8:23 AM. That gave Rob a 5 minutes head start on David. On foot, Rob ran 1:15:07 and David ran 1:10:15 — David was 4:52 faster than Rob. Rob took official place 394th (time-based 485th) and David took official place 397th (time-based 334th). Rob's head start was enough to flip the official order even though David was faster on foot. Biggest swing: David gained 2:47 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Rob Spinosa (T-INV) started 5 min earlier than David (Y-INV).
- Overall place Δ
- -3
- Actual time Δ
- +4:52
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 5 min (Rob earlier)
- Finish clock Δ
- -0:08
- Section place Δ
- -61
Δ = Rob − David. Negative means Rob is ahead/faster.
Race timeline
Computed- Rob (T-INV) started at 8:18 AM.
- David (Y-INV) started at 8:23 AM, 5:00 later.
- Actual running time: David was 4:52 faster on foot than Rob.
- Finish clock: Rob crossed the line 0:08 ahead of David — Rob wins this head-to-head.
Δ (A − B): actual +4:52 · finish clock -0:08.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Rob | David | Δ |
|---|---|---|---|
| Start to Top of Stairs | 8:28 | 8:16 | +0:12 |
| Stairs to Windy Gap | 6:51 | 6:05 | +0:46 |
| Windy Gap to Muir Woods | 5:43 | 5:36 | +0:07 |
| Muir Woods to Cardiac | 29:13 | 26:26 | +2:47 |
| Cardiac to White Gate | 15:23 | 14:53 | +0:30 |
| White Gate to The Stile | 7:18 | 7:07 | +0:11 |
| The Stile to Finish | 2:11 | 1:52 | +0:19 |
Δ negative = Rob ran the segment faster.