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
OfficialTom P Robinson
#1161 · 1:38:14 · M49 · Group V · DR
Wave start 8:47 AM (V-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; Tom (V-DR) started at 8:47 AM. That gave KATHERINE a 4 minutes head start on Tom. On foot, KATHERINE ran 1:42:01 and Tom ran 1:38:14 — Tom was 3:47 faster than KATHERINE. KATHERINE took official place 1159th (time-based 1122nd) and Tom took official place 1161st (time-based 1071st). KATHERINE's head start was enough to flip the official order even though Tom was faster on foot. Biggest swing: Tom gained 1:23 from Windy Gap to Muir Woods.
Deltas
ComputedWave start
KATHERINE OBRIEN (Q-DR) started 4 min earlier than Tom (V-DR).
- Overall place Δ
- -2
- Actual time Δ
- +3:47
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 4 min (KATHERINE earlier)
- Finish clock Δ
- -0:13
- Section place Δ
- +51
Δ = KATHERINE − Tom. Negative means KATHERINE is ahead/faster.
Race timeline
Computed- KATHERINE (Q-DR) started at 8:43 AM.
- Tom (V-DR) started at 8:47 AM, 4:00 later.
- Actual running time: Tom was 3:47 faster on foot than KATHERINE.
- Finish clock: KATHERINE crossed the line 0:13 ahead of Tom — KATHERINE wins this head-to-head.
Δ (A − B): actual +3:47 · finish clock -0:13.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | KATHERINE | Tom | Δ |
|---|---|---|---|
| Start to Top of Stairs | 12:08 | 11:13 | +0:55 |
| Stairs to Windy Gap | 8:51 | 7:58 | +0:53 |
| Windy Gap to Muir Woods | 9:38 | 8:15 | +1:23 |
| Muir Woods to Cardiac | 37:35 | 37:44 | -0:09 |
| Cardiac to White Gate | 21:16 | 20:10 | +1:06 |
| White Gate to The Stile | 9:56 | 10:12 | -0:16 |
| The Stile to Finish | 2:37 | 2:42 | -0:05 |
Δ negative = KATHERINE ran the segment faster.