Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialMason W Marks
#861 · 1:18:55 · M24 · Group SCR · DR
Wave start 8:52 AM (SCR-DR)
Athlete B
OfficialSpencer A Fast
#860 · 1:27:53 · M57 · Group Q · DR
Wave start 8:43 AM (Q-DR)
Interpretation
Mason (SCR-DR) started at 8:52 AM; Spencer (Q-DR) started at 8:43 AM. That gave Spencer a 9 minutes head start on Mason. On foot, Mason ran 1:18:55 and Spencer ran 1:27:53 — Mason was 8:58 faster than Spencer. Mason took official place 861st (time-based 611th) and Spencer took official place 860th (time-based 861st). Spencer's head start was enough to flip the official order even though Mason was faster on foot. Biggest swing: Mason gained 3:45 from Cardiac to White Gate.
Deltas
ComputedWave start
Spencer A Fast (Q-DR) started 9 min earlier than Mason (SCR-DR).
- Overall place Δ
- +1
- Actual time Δ
- -8:58
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 9 min (Spencer earlier)
- Finish clock Δ
- +0:02
- Section place Δ
- -29
Δ = Mason − Spencer. Negative means Mason is ahead/faster.
Race timeline
Computed- Spencer (Q-DR) started at 8:43 AM.
- Mason (SCR-DR) started at 8:52 AM, 9:00 later.
- Actual running time: Mason was 8:58 faster on foot than Spencer.
- Finish clock: Spencer crossed the line 0:02 ahead of Mason — Spencer wins this head-to-head.
Δ (A − B): actual -8:58 · finish clock +0:02.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Mason | Spencer | Δ |
|---|---|---|---|
| Start to Top of Stairs | 8:28 | 10:06 | -1:38 |
| Stairs to Windy Gap | 7:48 | 7:23 | +0:25 |
| Windy Gap to Muir Woods | 6:02 | 9:11 | -3:09 |
| Muir Woods to Cardiac | 31:24 | 30:36 | +0:48 |
| Cardiac to White Gate | 15:35 | 19:20 | -3:45 |
| White Gate to The Stile | 7:37 | 8:55 | -1:18 |
| The Stile to Finish | 2:01 | 2:22 | -0:21 |
Δ negative = Mason ran the segment faster.