Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialDavid A Greenblat
#1252 · 1:58:23 · M67 · Group G · DR
Wave start 8:35 AM (G-DR)
Athlete B
OfficialSiera Talbott
#1253 · 1:54:27 · F50 · Group L · DR
Wave start 8:39 AM (L-DR)
Interpretation
David (G-DR) started at 8:35 AM; Siera (L-DR) started at 8:39 AM. That gave David a 4 minutes head start on Siera. On foot, David ran 1:58:23 and Siera ran 1:54:27 — Siera was 3:56 faster than David. David took official place 1252nd (time-based 1281st) and Siera took official place 1253rd (time-based 1257th). David's head start was enough to flip the official order even though Siera was faster on foot. Biggest swing: Siera gained 3:44 from Muir Woods to Cardiac.
Deltas
ComputedWave start
David A Greenblat (G-DR) started 4 min earlier than Siera (L-DR).
- Overall place Δ
- -1
- Actual time Δ
- +3:56
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 4 min (David earlier)
- Finish clock Δ
- -0:04
- Section place Δ
- -24
Δ = David − Siera. Negative means David is ahead/faster.
Race timeline
Computed- David (G-DR) started at 8:35 AM.
- Siera (L-DR) started at 8:39 AM, 4:00 later.
- Actual running time: Siera was 3:56 faster on foot than David.
- Finish clock: David crossed the line 0:04 ahead of Siera — David wins this head-to-head.
Δ (A − B): actual +3:56 · finish clock -0:04.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | David | Siera | Δ |
|---|---|---|---|
| Start to Top of Stairs | 11:44 | 12:33 | -0:49 |
| Stairs to Windy Gap | 9:29 | 9:51 | -0:22 |
| Windy Gap to Muir Woods | 9:07 | 9:49 | -0:42 |
| Muir Woods to Cardiac | 45:17 | 41:33 | +3:44 |
| Cardiac to White Gate | 25:24 | 26:20 | -0:56 |
| White Gate to The Stile | 13:33 | 11:37 | +1:56 |
| The Stile to Finish | 3:49 | 2:44 | +1:05 |
Δ negative = David ran the segment faster.