Zach Last
Boston, MA
Bib: 1236 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 | 24:33 | 7:54 | 3.11 mi | 24:33 | 7:54 | - | |
10K | 46:49 | 7:32 | 3.10 mi | 22:16 | 7:10 | -0:44 | |
15K | 1:09:38 | 7:28 | 3.11 mi | 22:49 | 7:21 | +0:11 | |
21K | 1:37:05 | 7:26 | 3.73 mi | 27:27 | 7:22 | +0:01 | |
25K | 1:54:56 | 7:24 | 2.48 mi | 17:51 | 7:11 | -0:11 | |
30K | 2:19:04 | 7:28 | 3.11 mi | 24:08 | 7:46 | +0:35 | |
35K | 2:47:06 | 7:41 | 3.11 mi | 28:02 | 9:01 | +1:15 | |
40K | 3:19:11 | 8:01 | 3.10 mi | 32:05 | 10:20 | +1:19 | |
Finish(26.22 mi) | 3:33:22 | 8:09 | 1.37 mi | 14:11 | 10:24 | +0:04 |
Checkpoints & Pacing
Pace Line
Fastest Pace
7:10 /mi
Average Pace
8:09 /mi
Slowest Pace
10:24 /mi
Segments
Time at Faster Pace
0:00
0% of race
Time at Steady Pace
2:19:04
65% of race
Time at Slower Pace
1:14:18
35% of race
Average Pace: 8:08 /mi
Heatmap
Checkpoint and Segment Rankings
| Checkpoint | Distance | Seg. Dist | Overall | Males | M25-29 | Seg. Overall | Seg. Males | Seg. M25-29 |
|---|---|---|---|---|---|---|---|---|
| 5K | 3.11 mi | 3.11 mi | 1188 | 997 | 225 | 837 | 727 | 163 |
| 10K | 6.21 mi | 3.10 mi | 1005+183 | 860+137 | 191+34 | 805 | 706 | 155 |
| 15K | 9.32 mi | 3.11 mi | 956+49 | 828+32 | 184+7 | 837 | 727 | 163 |
| 21K | 13.05 mi | 3.73 mi | 891+65 | 774+54 | 174+10 | 766 | 669 | 149 |
| 25K | 15.53 mi | 2.48 mi | 875+16 | 756+18 | 164+10 | 797 | 686 | 158 |
| 30K | 18.64 mi | 3.11 mi | 892-17 | 769-13 | 168-4 | 1062 | 902 | 213 |
| 35K | 21.75 mi | 3.11 mi | 1090-198 | 924-155 | 216-48 | 3510 | 2612 | 557 |
| 40K | 24.85 mi | 3.10 mi | 1494-404 | 1224-300 | 281-65 | 5507 | 3718 | 759 |
| Finish | 26.22 mi | 1.37 mi | 1659-165 | 1337-113 | 313-32 | 6038 | 4010 | 835 |
Segment Performance Analysis
10K→15K
0.0 - 3.1 mi
Overall
837
Males
727
M25-29
727
5K→10K
3.1 - 6.2 mi
Overall
805
Males
706
M25-29
706
10K→15K
6.2 - 9.3 mi
Overall
837
Males
727
M25-29
727
15K→21K
9.3 - 13.1 mi
Overall
766
Males
669
M25-29
669
21K→25K
13.1 - 15.5 mi
Overall
797
Males
686
M25-29
686
25K→30K
15.5 - 18.6 mi
Overall
1062
Males
902
M25-29
902
30K→35K
18.6 - 21.8 mi
Overall
3510
Males
2612
M25-29
2612
35K→40K
21.8 - 24.9 mi
Overall
5507
Males
3718
M25-29
3718
40K→Finish
24.9 - 26.2 mi
Overall
6038
Males
4010
M25-29
4010
Passing Analysis
| Segment | Athletes Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 5K | - | - | - | - | #1188 |
| 5K → 10K | 185 | 2 | +183 | #1188 | #1005 |
| 10K → 15K | 58* | 9 | +49 | #1005 | #956 |
| 15K → 21K | 72* | 7 | +65 | #956 | #891 |
| 21K → 25K | 35* | 19 | +16 | #891 | #875 |
| 25K → 30K | 30* | 47 | -17 | #875 | #892 |
| 30K → 35K | 12* | 210 | -198 | #892 | #1090 |
| 35K → 40K | 3* | 407 | -404 | #1090 | #1494 |
| 40K → Finish | 9 | 174 | -165 | #1494 | #1659 |
| TOTALS | 404* | 875 | -471 |
* Includes athletes who did not complete a segment (DNF/DNQ).
Passing Charts
Passing Circle
Position Flow
Race Lanes
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Public Race Data
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Race managed by
U.S. Marine Corps Community Services (MCCS)
Race timed by
Timing Productions