David Chirgwin
Charlestown, MA
Bib: 4329 M
Race Timeline
The Course
Half Splits
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See your splits, ranks & AI insights.
Checkpoint Splits
| Checkpoint | Time | Avg Pace | Segment Length | Segment Time | Segment Pace | Trend | Diff |
|---|---|---|---|---|---|---|---|
5K | 39:25 | 12:41 | 3.11 mi | 39:25 | 12:41 | - | |
10K | 1:17:28 | 12:28 | 3.10 mi | 38:03 | 12:15 | -0:26 | |
15K | 2:01:54 | 13:05 | 3.11 mi | 44:26 | 14:18 | +2:03 | |
21K | 2:47:36 | 12:51 | 3.73 mi | 45:42 | 12:15 | -2:03 | |
25K | 3:21:58 | 13:00 | 2.48 mi | 34:22 | 13:50 | +1:35 | |
30K | 4:07:03 | 13:15 | 3.11 mi | 45:05 | 14:31 | +0:41 | |
35K | 4:51:06 | 13:23 | 3.11 mi | 44:03 | 14:11 | -0:20 | |
40K | 5:35:48 | 13:31 | 3.10 mi | 44:42 | 14:23 | +0:12 | |
Finish(26.22 mi) | 5:55:42 | 13:35 | 1.37 mi | 19:54 | 14:35 | +0:12 |
Checkpoints & Pacing
Pace Line
Fastest Pace
12:15 /mi
Average Pace
13:35 /mi
Slowest Pace
14:35 /mi
Segments
Time at Faster Pace
2:03:10
35% of race
Time at Steady Pace
2:47:33
47% of race
Time at Slower Pace
1:04:59
18% of race
Average Pace: 13:34 /mi
Heatmap
Checkpoint and Segment Rankings
| Checkpoint | Distance | Seg. Dist | Overall | Males | M45-49 | Seg. Overall | Seg. Males | Seg. M45-49 |
|---|---|---|---|---|---|---|---|---|
| 5K | 3.11 mi | 3.11 mi | 26613 | 16309 | 1573 | 29566 | 17546 | 1731 |
| 10K | 6.21 mi | 3.10 mi | 26903-290 | 16433-124 | 1585-12 | 27102 | 16507 | 1587 |
| 15K | 9.32 mi | 3.11 mi | 28358-1455 | 17080-647 | 1668-83 | 29566 | 17546 | 1731 |
| 21K | 13.05 mi | 3.73 mi | 27030+1328 | 16465+615 | 1599+69 | 23196 | 14525 | 1389 |
| 25K | 15.53 mi | 2.48 mi | 27044-14 | 16411+54 | 1598+1 | 26621 | 15948 | 1558 |
| 30K | 18.64 mi | 3.11 mi | 26842+202 | 16247+164 | 1585+13 | 25805 | 15363 | 1491 |
| 35K | 21.75 mi | 3.11 mi | 26397+445 | 15962+285 | 1560+25 | 23493 | 13945 | 1332 |
| 40K | 24.85 mi | 3.10 mi | 25886+511 | 15651+311 | 1520+40 | 22508 | 13342 | 1256 |
| Finish | 26.22 mi | 1.37 mi | 25768+118 | 15570+81 | 1507+13 | 23577 | 13989 | 1324 |
Segment Performance Analysis
10K→15K
0.0 - 3.1 mi
Overall
29566
Males
17546
M45-49
17546
5K→10K
3.1 - 6.2 mi
Overall
27102
Males
16507
M45-49
16507
10K→15K
6.2 - 9.3 mi
Overall
29566
Males
17546
M45-49
17546
15K→21K
9.3 - 13.1 mi
Overall
23196
Males
14525
M45-49
14525
21K→25K
13.1 - 15.5 mi
Overall
26621
Males
15948
M45-49
15948
25K→30K
15.5 - 18.6 mi
Overall
25805
Males
15363
M45-49
15363
30K→35K
18.6 - 21.8 mi
Overall
23493
Males
13945
M45-49
13945
35K→40K
21.8 - 24.9 mi
Overall
22508
Males
13342
M45-49
13342
40K→Finish
24.9 - 26.2 mi
Overall
23577
Males
13989
M45-49
13989
Passing Analysis
| Segment | Athletes Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 5K | - | - | - | - | #26613 |
| 5K → 10K | 234* | 524 | -290 | #26613 | #26903 |
| 10K → 15K | 42* | 1497 | -1455 | #26903 | #28358 |
| 15K → 21K | 1338* | 10 | +1328 | #28358 | #27030 |
| 21K → 25K | 253* | 267 | -14 | #27030 | #27044 |
| 25K → 30K | 373* | 171 | +202 | #27044 | #26842 |
| 30K → 35K | 514* | 69 | +445 | #26842 | #26397 |
| 35K → 40K | 550* | 39 | +511 | #26397 | #25886 |
| 40K → Finish | 175* | 57 | +118 | #25886 | #25768 |
| TOTALS | 3479* | 2634 | +845 |
* 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