Katherine Cheng
Palo Alto, CA
Bib: 15115 F 20
⏱️ Race Timeline
The Course
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A one-of-a-kind AI Race Performance Report that reads your race like a coach. A plain-English story of how you raced, where you surged and faded, and what it all means. Emailed to you, free.
Half Splits
Checkpoint Splits
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment Time | Segment Pace | Diff |
|---|---|---|---|---|---|---|---|
2.13M | 2.13 mi | 07:32:58 | 20:47 | 9:45 | 20:47 | 9:45 | - |
6.62M | 6.62 mi | 08:05:41 | 53:30 | 8:05 | 32:43 | 7:17 | -2:28 |
7.12M | 7.12 mi | 08:10:30 | 58:19 | 8:11 | 4:49 | 9:38 | +2:21 |
10.65M | 10.65 mi | 08:34:48 | 1:22:37 | 7:45 | 24:18 | 6:53 | -2:45 |
Finish | 13.11 mi | 08:50:46 | 1:38:35 | 7:31 | 15:58 | 6:30 | -0:23 |
Checkpoints & Pacing
📈Pace Line
Pace Progression
Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.
Fastest Pace
6:30 /mi
Average Pace
7:31 /mi
Slowest Pace
9:45 /mi
📊Segments
Segment Time Comparison
Time at Faster Pace
15:58
16% of race
Time at Steady Pace
57:01
58% of race
Time at Slower Pace
25:36
26% of race
Average Pace: 7:31 /mi
🎨Heatmap
Pace Heatmap
Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.
Click or hover over segments to see details
✨Sparklines
Checkpoint Splits with Pace Trends
Overall Pace Trend
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment | Pace | Trend | Rank |
|---|---|---|---|---|---|---|---|---|
2.13M | 2.13 mi | 07:32:58 | 20:47 | 9:45 | 20:47 | 9:45 | #279 | |
6.62M | 6.62 mi | 08:05:41 | 53:30 | 8:05 | 32:43 | 7:17 | #209 | |
7.12M | 7.12 mi | 08:10:30 | 58:19 | 8:11 | 4:49 | 9:38 | #200 | |
10.65M | 10.65 mi | 08:34:48 | 1:22:37 | 7:45 | 24:18 | 6:53 | #173 | |
Finish | 13.11 mi | 08:50:46 | 1:38:35 | 7:31 | 15:58 | 6:30 | #152 |
Checkpoint and Segment Rankings
| Checkpoint | Distance | Seg. Dist | Overall | Females | F20-29 | Seg. Overall | Seg. Females | Seg. F20-29 |
|---|---|---|---|---|---|---|---|---|
| 2.13M | 2.13 mi | 2.13 mi | 279 | 40 | 4 | 279(Top 5%) | 40(Top 2%) | 4(Top 1%) |
| 6.62M | 6.62 mi | 4.49 mi | 209+70 | 31+9 | 4 | 188(Top 4%) | 27(Top 1%) | 4(Top 1%) |
| 7.12M | 7.12 mi | 0.50 mi | 200+9 | 31 | 4 | 226(Top 4%) | 30(Top 1%) | 6(Top 2%) |
| 10.65M | 10.65 mi | 3.53 mi | 173+27 | 24+7 | 4 | 145(Top 3%) | 15(Top 0.7%) | 3(Top 1%) |
| Finish | 13.11 mi | 2.46 mi | 152+21 | 22+2 | 4 | 98(Top 2%) | 7(Top 0.3%) | 1(Top 0.4%) |
Segment Performance Analysis
Start → 2.13M
0.0 - 2.1 mi
Overall
279
Females
40
F20-24
4
2.13M→6.62M
2.1 - 6.6 mi
Overall
188
Females
27
F20-24
4
6.62M→7.12M
6.6 - 7.1 mi
Overall
226
Females
30
F20-24
6
7.12M→10.65M
7.1 - 10.7 mi
Overall
145
Females
15
F20-24
3
10.65M→Finish
10.7 - 13.1 mi
Overall
98
Females
7
F20-24
1
Passing Analysis
| Segment | Athletes Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 2.13M | - | - | - | - | #279 |
| 2.13M → 6.62M | 75 | 5 | +70 | #279 | #209 |
| 6.62M → 7.12M | 12 | 3 | +9 | #209 | #200 |
| 7.12M → 10.65M | 31 | 4 | +27 | #200 | #173 |
| 10.65M → Finish | 21* | 0 | +21 | #173 | #152 |
| TOTALS | 139* | 12 | +127 |
* Includes athletes who did not complete a segment (DNF/DNQ).
Passing Visuals
🔄Passing Circle
🌊Position Flow
🏃Race Lanes
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Official Timing Data
Enhanced athlete results built from official timing data.
Race managed by
The San Francisco Marathon
Race timed by
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