Alistair Blacklock
San Francisco, CA
Bib: 5173 M
Race Timeline
The Course
Half Splits
Your race, unpacked
See your splits, ranks & AI insights.
Checkpoint Splits
| Checkpoint | Time | Avg Pace | Segment Length | Segment Time | Segment Pace | Trend | Diff |
|---|---|---|---|---|---|---|---|
5K | 26:41 | 8:35 | 3.11 mi | 26:41 | 8:35 | - | |
10K | 52:18 | 8:25 | 3.10 mi | 25:37 | 8:15 | -0:20 | |
15K | 1:18:31 | 8:25 | 3.11 mi | 26:13 | 8:26 | +0:11 | |
21K | 1:51:16 | 8:32 | 3.73 mi | 32:45 | 8:47 | +0:21 | |
25K | 2:14:17 | 8:39 | 2.48 mi | 23:01 | 9:16 | +0:29 | |
30K | 2:45:16 | 8:52 | 3.11 mi | 30:59 | 9:58 | +0:42 | |
35K | 3:16:29 | 9:02 | 3.11 mi | 31:13 | 10:03 | +0:05 | |
40K | 3:48:01 | 9:10 | 3.10 mi | 31:32 | 10:09 | +0:06 | |
Finish(26.22 mi) | 4:01:57 | 9:14 | 1.37 mi | 13:56 | 10:13 | +0:04 |
Checkpoints & Pacing
Pace Line
Fastest Pace
8:15 /mi
Average Pace
9:14 /mi
Slowest Pace
10:13 /mi
Segments
Time at Faster Pace
1:51:16
46% of race
Time at Steady Pace
23:01
10% of race
Time at Slower Pace
1:47:40
44% of race
Average Pace: 9:14 /mi
Heatmap
Checkpoint and Segment Rankings
| Checkpoint | Seg. Dist | Overall | Males | M30-34 | Seg. Overall | Seg. Males | Seg. M30-34 |
|---|---|---|---|---|---|---|---|
| 5K | 3.11 mi | 2668 | 2143 | 404 | 3089 | 2464 | 472 |
| 10K | 3.10 mi | 2830-162 | 2275-132 | 439-35 | 3033 | 2448 | 463 |
| 15K | 3.11 mi | 2918-88 | 2331-56 | 453-14 | 3089 | 2464 | 472 |
| 21K | 3.73 mi | 3158-240 | 2521-190 | 480-27 | 3877 | 3053 | 552 |
| 25K | 2.48 mi | 3584-426 | 2836-315 | 522-42 | 6263 | 4583 | 820 |
| 30K | 3.11 mi | 4076-492 | 3163-327 | 570-48 | 6280 | 4522 | 794 |
| 35K | 3.11 mi | 4395-319 | 3355-192 | 596-26 | 5903 | 4124 | 728 |
| 40K | 3.10 mi | 4520-125 | 3388-33 | 605-9 | 5138 | 3515 | 636 |
| Finish(26.22 mi) | 1.37 mi | 4583-63 | 3422-34 | 611-6 | 5660 | 3792 | 673 |
Segment Performance Analysis
10K→15K
0.0 - 3.1 mi
Overall
3089
Males
2464
M30-34
2464
5K→10K
3.1 - 6.2 mi
Overall
3033
Males
2448
M30-34
2448
10K→15K
6.2 - 9.3 mi
Overall
3089
Males
2464
M30-34
2464
15K→21K
9.3 - 13.1 mi
Overall
3877
Males
3053
M30-34
3053
21K→25K
13.1 - 15.5 mi
Overall
6263
Males
4583
M30-34
4583
25K→30K
15.5 - 18.6 mi
Overall
6280
Males
4522
M30-34
4522
30K→35K
18.6 - 21.8 mi
Overall
5903
Males
4124
M30-34
4124
35K→40K
21.8 - 24.9 mi
Overall
5138
Males
3515
M30-34
3515
40K→Finish
24.9 - 26.2 mi
Overall
5660
Males
3792
M30-34
3792
Passing Analysis
| Segment | Athletes Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 5K | - | - | - | - | #2668 |
| 5K → 10K | 69* | 231 | -162 | #2668 | #2830 |
| 10K → 15K | 67* | 155 | -88 | #2830 | #2918 |
| 15K → 21K | 31* | 271 | -240 | #2918 | #3158 |
| 21K → 25K | 18* | 444 | -426 | #3158 | #3584 |
| 25K → 30K | 48* | 540 | -492 | #3584 | #4076 |
| 30K → 35K | 86* | 405 | -319 | #4076 | #4395 |
| 35K → 40K | 135* | 260 | -125 | #4395 | #4520 |
| 40K → Finish | 41* | 104 | -63 | #4520 | #4583 |
| TOTALS | 495* | 2410 | -1915 |
* Includes athletes who did not complete a segment (DNF/DNQ).
Passing Charts
Passing Circle
Position Flow
Race Lanes
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Race managed by
U.S. Marine Corps Community Services (MCCS)
Race timed by
Timing Productions