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
OfficialIvy Stempkovski
#1157 · 1:42:56 · F25 · Group P · DR
Wave start 8:42 AM (P-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; Ivy (P-DR) started at 8:42 AM. That gave Ivy a 1 minute head start on KATHERINE. On foot, KATHERINE ran 1:42:01 and Ivy ran 1:42:56 — KATHERINE was 0:55 faster than Ivy. KATHERINE took official place 1159th (time-based 1122nd) and Ivy took official place 1157th (time-based 1134th). Ivy's head start was enough to flip the official order even though KATHERINE was faster on foot. Biggest swing: KATHERINE gained 2:51 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Ivy Stempkovski (P-DR) started 1 min earlier than KATHERINE (Q-DR).
- Overall place Δ
- +2
- Actual time Δ
- -0:55
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 1 min (Ivy earlier)
- Finish clock Δ
- +0:05
- Section place Δ
- +29
Δ = KATHERINE − Ivy. Negative means KATHERINE is ahead/faster.
Race timeline
Computed- Ivy (P-DR) started at 8:42 AM.
- KATHERINE (Q-DR) started at 8:43 AM, 1:00 later.
- Actual running time: KATHERINE was 0:55 faster on foot than Ivy.
- Finish clock: Ivy crossed the line 0:05 ahead of KATHERINE — Ivy wins this head-to-head.
Δ (A − B): actual -0:55 · finish clock +0:05.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | KATHERINE | Ivy | Δ |
|---|---|---|---|
| Start to Top of Stairs | 12:08 | 11:43 | +0:25 |
| Stairs to Windy Gap | 8:51 | 11:09 | -2:18 |
| Windy Gap to Muir Woods | 9:38 | 7:43 | +1:55 |
| Muir Woods to Cardiac | 37:35 | 40:26 | -2:51 |
| Cardiac to White Gate | 21:16 | 19:49 | +1:27 |
| White Gate to The Stile | 9:56 | 9:37 | +0:19 |
| The Stile to Finish | 2:37 | 2:29 | +0:08 |
Δ negative = KATHERINE ran the segment faster.