Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialTatem W Read
#243 · 1:15:44 · F47 · Group M · INV
Wave start 8:13 AM (M-INV)
Athlete B
OfficialBryan Daniel Chambers
#238 · 1:04:37 · M31 · Group Z · INV
Wave start 8:24 AM (Z-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
Tatem (M-INV) started at 8:13 AM; Bryan (Z-INV) started at 8:24 AM. That gave Tatem a 11 minutes head start on Bryan. On foot, Tatem ran 1:15:44 and Bryan ran 1:04:37 — Bryan was 11:07 faster than Tatem. Tatem took official place 243rd (time-based 514th) and Bryan took official place 238th (time-based 169th). Bryan was faster on foot and finished ahead on the official clock too. Biggest swing: Bryan gained 2:58 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Tatem W Read (M-INV) started 11 min earlier than Bryan (Z-INV).
- Overall place Δ
- +5
- Actual time Δ
- +11:07
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 11 min (Tatem earlier)
- Finish clock Δ
- +0:07
- Section place Δ
- -16
Δ = Tatem − Bryan. Negative means Tatem is ahead/faster.
Race timeline
Computed- Tatem (M-INV) started at 8:13 AM.
- Bryan (Z-INV) started at 8:24 AM, 11:00 later.
- Actual running time: Bryan was 11:07 faster on foot than Tatem.
- Finish clock: Bryan crossed the line 0:07 ahead of Tatem — Bryan wins this head-to-head.
Δ (A − B): actual +11:07 · finish clock +0:07.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Tatem | Bryan | Δ |
|---|---|---|---|
| Start to Top of Stairs | 9:20 | 7:32 | +1:48 |
| Stairs to Windy Gap | 6:36 | 5:31 | +1:05 |
| Windy Gap to Muir Woods | 6:31 | 5:07 | +1:24 |
| Muir Woods to Cardiac | 27:36 | 24:38 | +2:58 |
| Cardiac to White Gate | 15:51 | 13:22 | +2:29 |
| White Gate to The Stile | 7:37 | 6:41 | +0:56 |
| The Stile to Finish | 2:13 | 1:46 | +0:27 |
Δ negative = Tatem ran the segment faster.