Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialKelly A O'Mara
#412 · 1:18:54 · F41 · Group P · INV
Wave start 8:15 AM (P-INV)
Athlete B
OfficialMarley Nacco
#410 · 1:19:49 · F19 · Group N · INV
Wave start 8:14 AM (N-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
Kelly (P-INV) started at 8:15 AM; Marley (N-INV) started at 8:14 AM. That gave Marley a 1 minute head start on Kelly. On foot, Kelly ran 1:18:54 and Marley ran 1:19:49 — Kelly was 0:55 faster than Marley. Kelly took official place 412th (time-based 609th) and Marley took official place 410th (time-based 647th). Marley's head start was enough to flip the official order even though Kelly was faster on foot. Biggest swing: Kelly gained 1:06 from Top of Stairs to Windy Gap.
Deltas
ComputedWave start
Marley Nacco (N-INV) started 1 min earlier than Kelly (P-INV).
- Overall place Δ
- +2
- Actual time Δ
- -0:55
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 1 min (Marley earlier)
- Finish clock Δ
- +0:05
- Section place Δ
- +19
Δ = Kelly − Marley. Negative means Kelly is ahead/faster.
Race timeline
Computed- Marley (N-INV) started at 8:14 AM.
- Kelly (P-INV) started at 8:15 AM, 1:00 later.
- Actual running time: Kelly was 0:55 faster on foot than Marley.
- Finish clock: Marley crossed the line 0:05 ahead of Kelly — Marley 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 | Kelly | Marley | Δ |
|---|---|---|---|
| Start to Top of Stairs | 8:52 | 8:51 | +0:01 |
| Stairs to Windy Gap | 6:27 | 7:33 | -1:06 |
| Windy Gap to Muir Woods | 6:21 | 6:33 | -0:12 |
| Muir Woods to Cardiac | 30:10 | 31:00 | -0:50 |
| Cardiac to White Gate | 16:40 | 16:36 | +0:04 |
| White Gate to The Stile | 8:07 | 7:18 | +0:49 |
| The Stile to Finish | 2:17 | 1:58 | +0:19 |
Δ negative = Kelly ran the segment faster.