Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialKieran Perez
#301 · 1:06:31 · M31 · Group Z · INV
Wave start 8:24 AM (Z-INV)
Athlete B
OfficialBrian A Foster
#306 · 1:10:44 · M49 · 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
Kieran (Z-INV) started at 8:24 AM; Brian (V-INV) started at 8:20 AM. That gave Brian a 4 minutes head start on Kieran. On foot, Kieran ran 1:06:31 and Brian ran 1:10:44 — Kieran was 4:13 faster than Brian. Kieran took official place 301st (time-based 219th) and Brian took official place 306th (time-based 348th). Kieran was faster on foot and finished ahead on the official clock too. Biggest swing: Kieran gained 0:55 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Brian A Foster (V-INV) started 4 min earlier than Kieran (Z-INV).
- Overall place Δ
- -5
- Actual time Δ
- -4:13
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 4 min (Brian earlier)
- Finish clock Δ
- -0:13
- Section place Δ
- +15
Δ = Kieran − Brian. Negative means Kieran is ahead/faster.
Race timeline
Computed- Brian (V-INV) started at 8:20 AM.
- Kieran (Z-INV) started at 8:24 AM, 4:00 later.
- Actual running time: Kieran was 4:13 faster on foot than Brian.
- Finish clock: Kieran crossed the line 0:13 ahead of Brian — Kieran wins this head-to-head.
Δ (A − B): actual -4:13 · finish clock -0:13.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Kieran | Brian | Δ |
|---|---|---|---|
| Start to Top of Stairs | 7:46 | 8:00 | -0:14 |
| Stairs to Windy Gap | 5:19 | 6:06 | -0:47 |
| Windy Gap to Muir Woods | 5:23 | 5:40 | -0:17 |
| Muir Woods to Cardiac | 25:23 | 26:18 | -0:55 |
| Cardiac to White Gate | 13:58 | 14:43 | -0:45 |
| White Gate to The Stile | 7:00 | 7:42 | -0:42 |
| The Stile to Finish | 1:42 | 2:15 | -0:33 |
Δ negative = Kieran ran the segment faster.