Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialIsaac Blundell
#331 · 1:07:15 · M31 · Group Z · INV
Wave start 8:24 AM (Z-INV)
Athlete B
OfficialMary J Vidovich
#330 · 1:27:14 · F62 · Group C · INV
Wave start 8:04 AM (C-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
Isaac (Z-INV) started at 8:24 AM; Mary (C-INV) started at 8:04 AM. That gave Mary a 20 minutes head start on Isaac. On foot, Isaac ran 1:07:15 and Mary ran 1:27:14 — Isaac was 19:59 faster than Mary. Isaac took official place 331st (time-based 243rd) and Mary took official place 330th (time-based 838th). Mary's head start was enough to flip the official order even though Isaac was faster on foot. Biggest swing: Isaac gained 5:48 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Mary J Vidovich (C-INV) started 20 min earlier than Isaac (Z-INV).
- Overall place Δ
- +1
- Actual time Δ
- -19:59
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 20 min (Mary earlier)
- Finish clock Δ
- +0:01
- Section place Δ
- +36
Δ = Isaac − Mary. Negative means Isaac is ahead/faster.
Race timeline
Computed- Mary (C-INV) started at 8:04 AM.
- Isaac (Z-INV) started at 8:24 AM, 20:00 later.
- Actual running time: Isaac was 19:59 faster on foot than Mary.
- Finish clock: Mary crossed the line 0:01 ahead of Isaac — Mary wins this head-to-head.
Δ (A − B): actual -19:59 · finish clock +0:01.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Isaac | Mary | Δ |
|---|---|---|---|
| Start to Top of Stairs | 7:51 | 9:42 | -1:51 |
| Stairs to Windy Gap | 5:36 | 7:51 | -2:15 |
| Windy Gap to Muir Woods | 5:46 | 7:11 | -1:25 |
| Muir Woods to Cardiac | 25:25 | 31:13 | -5:48 |
| Cardiac to White Gate | 14:08 | 19:26 | -5:18 |
| White Gate to The Stile | 6:37 | 9:24 | -2:47 |
| The Stile to Finish | 1:52 | 2:27 | -0:35 |
Δ negative = Isaac ran the segment faster.