Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialKATHERINE OBRIEN
#1159 · 1:42:01 · F31 · Group Q · DR
Wave start 8:43 AM (Q-DR)
Athlete B
OfficialKawa Chiu
#1154 · 1:47:23 · F53 · Group J · DR
Wave start 8:37 AM (J-DR)
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
KATHERINE (Q-DR) started at 8:43 AM; Kawa (J-DR) started at 8:37 AM. That gave Kawa a 6 minutes head start on KATHERINE. On foot, KATHERINE ran 1:42:01 and Kawa ran 1:47:23 — KATHERINE was 5:22 faster than Kawa. KATHERINE took official place 1159th (time-based 1122nd) and Kawa took official place 1154th (time-based 1204th). Kawa's head start was enough to flip the official order even though KATHERINE was faster on foot. Biggest swing: KATHERINE gained 3:33 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Kawa Chiu (J-DR) started 6 min earlier than KATHERINE (Q-DR).
- Overall place Δ
- +5
- Actual time Δ
- -5:22
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 6 min (Kawa earlier)
- Finish clock Δ
- +0:38
- Section place Δ
- +63
Δ = KATHERINE − Kawa. Negative means KATHERINE is ahead/faster.
Race timeline
Computed- Kawa (J-DR) started at 8:37 AM.
- KATHERINE (Q-DR) started at 8:43 AM, 6:00 later.
- Actual running time: KATHERINE was 5:22 faster on foot than Kawa.
- Finish clock: Kawa crossed the line 0:38 ahead of KATHERINE — Kawa wins this head-to-head.
Δ (A − B): actual -5:22 · finish clock +0:38.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | KATHERINE | Kawa | Δ |
|---|---|---|---|
| Start to Top of Stairs | 12:08 | 11:34 | +0:34 |
| Stairs to Windy Gap | 8:51 | 10:06 | -1:15 |
| Windy Gap to Muir Woods | 9:38 | 8:35 | +1:03 |
| Muir Woods to Cardiac | 37:35 | 41:08 | -3:33 |
| Cardiac to White Gate | 21:16 | 22:37 | -1:21 |
| White Gate to The Stile | 9:56 | 10:26 | -0:30 |
| The Stile to Finish | 2:37 | 2:57 | -0:20 |
Δ negative = KATHERINE ran the segment faster.