William Chang
Boston, MA
Bib: 9459 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 | 30:42 | 9:53 | 3.11 mi | 30:42 | 9:53 | - | |
10K | 59:10 | 9:31 | 3.10 mi | 28:28 | 9:10 | -0:43 | |
15K | 1:27:18 | 9:22 | 3.11 mi | 28:08 | 9:03 | -0:07 | |
21K | 2:01:37 | 9:19 | 3.73 mi | 34:19 | 9:12 | +0:09 | |
25K | 2:23:37 | 9:15 | 2.48 mi | 22:00 | 8:51 | -0:21 | |
30K | 2:54:01 | 9:20 | 3.11 mi | 30:24 | 9:47 | +0:56 | |
35K | 3:26:39 | 9:30 | 3.11 mi | 32:38 | 10:30 | +0:43 | |
40K | 4:04:33 | 9:50 | 3.10 mi | 37:54 | 12:12 | +1:42 | |
Finish(26.22 mi) | 4:17:02 | 9:49 | 1.37 mi | 12:29 | 9:09 | -3:03 |
Checkpoints & Pacing
Pace Line
Fastest Pace
8:51 /mi
Average Pace
9:49 /mi
Slowest Pace
12:12 /mi
Segments
Time at Faster Pace
0:00
0% of race
Time at Steady Pace
2:05:24
49% of race
Time at Slower Pace
2:11:38
51% of race
Average Pace: 9:48 /mi
Heatmap
Checkpoint and Segment Rankings
| Checkpoint | Seg. Dist | Overall | Males | M25-29 | Seg. Overall | Seg. Males | Seg. M25-29 |
|---|---|---|---|---|---|---|---|
| 5K | 3.11 mi | 7284 | 5345 | 1045 | 5424 | 4156 | 869 |
| 10K | 3.10 mi | 6956+328 | 5156+189 | 1019+26 | 6672 | 4976 | 998 |
| 15K | 3.11 mi | 6434+522 | 4823+333 | 969+50 | 5424 | 4156 | 869 |
| 21K | 3.73 mi | 6186+248 | 4656+167 | 951+18 | 5559 | 4222 | 879 |
| 25K | 2.48 mi | 5933+253 | 4460+196 | 921+30 | 4987 | 3761 | 793 |
| 30K | 3.11 mi | 5813+120 | 4340+120 | 889+32 | 5837 | 4257 | 894 |
| 35K | 3.11 mi | 5904-91 | 4340 | 885+4 | 6978 | 4732 | 969 |
| 40K | 3.10 mi | 6364-460 | 4552-212 | 927-42 | 9544 | 6080 | 1171 |
| Finish(26.22 mi) | 1.37 mi | 6141+223 | 4389+163 | 901+26 | 3205 | 2278 | 512 |
Segment Performance Analysis
10K→15K
0.0 - 3.1 mi
Overall
5424
Males
4156
M25-29
4156
5K→10K
3.1 - 6.2 mi
Overall
6672
Males
4976
M25-29
4976
10K→15K
6.2 - 9.3 mi
Overall
5424
Males
4156
M25-29
4156
15K→21K
9.3 - 13.1 mi
Overall
5559
Males
4222
M25-29
4222
21K→25K
13.1 - 15.5 mi
Overall
4987
Males
3761
M25-29
3761
25K→30K
15.5 - 18.6 mi
Overall
5837
Males
4257
M25-29
4257
30K→35K
18.6 - 21.8 mi
Overall
6978
Males
4732
M25-29
4732
35K→40K
21.8 - 24.9 mi
Overall
9544
Males
6080
M25-29
6080
40K→Finish
24.9 - 26.2 mi
Overall
3205
Males
2278
M25-29
2278
Passing Analysis
| Segment | Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 5K | - | - | - | - | #7284 |
| 5K → 10K | 443* | 115 | +328 | #7284 | #6956 |
| 10K → 15K | 533* | 11 | +522 | #6956 | #6434 |
| 15K → 21K | 286* | 38 | +248 | #6434 | #6186 |
| 21K → 25K | 280* | 27 | +253 | #6186 | #5933 |
| 25K → 30K | 237* | 117 | +120 | #5933 | #5813 |
| 30K → 35K | 179* | 270 | -91 | #5813 | #5904 |
| 35K → 40K | 67* | 527 | -460 | #5904 | #6364 |
| 40K → Finish | 225* | 2 | +223 | #6364 | #6141 |
| TOTALS | 2250* | 1107 | +1143 |
* 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