Jeff Zhao
Dorchester, MA
Bib: 19090 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 | 31:48 | 10:14 | 3.11 mi | 31:48 | 10:14 | - | |
10K | 1:01:37 | 9:55 | 3.10 mi | 29:49 | 9:36 | -0:38 | |
15K | 1:31:36 | 9:50 | 3.11 mi | 29:59 | 9:39 | +0:03 | |
21K | 2:07:51 | 9:48 | 3.73 mi | 36:15 | 9:43 | +0:04 | |
25K | 2:31:15 | 9:44 | 2.48 mi | 23:24 | 9:25 | -0:18 | |
30K | 3:01:25 | 9:44 | 3.11 mi | 30:10 | 9:43 | +0:18 | |
35K | 3:31:25 | 9:43 | 3.11 mi | 30:00 | 9:39 | -0:04 | |
40K | 4:01:47 | 9:44 | 3.10 mi | 30:22 | 9:46 | +0:07 | |
Finish(26.22 mi) | 4:15:49 | 9:46 | 1.37 mi | 14:02 | 10:17 | +0:31 |
Checkpoints & Pacing
Pace Line
Fastest Pace
9:25 /mi
Average Pace
9:46 /mi
Slowest Pace
10:17 /mi
Segments
Time at Faster Pace
3:29:59
82% of race
Time at Steady Pace
45:50
18% of race
Time at Slower Pace
0:00
0% of race
Average Pace: 9:45 /mi
Heatmap
Checkpoint and Segment Rankings
| Checkpoint | Seg. Dist | Overall | Males | M35-39 | Seg. Overall | Seg. Males | Seg. M35-39 |
|---|---|---|---|---|---|---|---|
| 5K | 3.11 mi | 13106 | 9170 | 1373 | 12804 | 8975 | 1312 |
| 10K | 3.10 mi | 13086+20 | 9171-1 | 1366+7 | 13179 | 9237 | 1362 |
| 15K | 3.11 mi | 12883+203 | 9033+138 | 1325+41 | 12804 | 8975 | 1312 |
| 21K | 3.73 mi | 12460+423 | 8780+253 | 1282+43 | 11807 | 8349 | 1207 |
| 25K | 2.48 mi | 12054+406 | 8503+277 | 1236+46 | 10752 | 7606 | 1097 |
| 30K | 3.11 mi | 11352+702 | 8026+477 | 1171+65 | 9302 | 6566 | 952 |
| 35K | 3.11 mi | 10483+869 | 7393+633 | 1083+88 | 7778 | 5428 | 798 |
| 40K | 3.10 mi | 9689+794 | 6794+599 | 1003+80 | 6942 | 4704 | 681 |
| Finish(26.22 mi) | 1.37 mi | 9548+141 | 6668+126 | 981+22 | 9111 | 5832 | 833 |
Segment Performance Analysis
10K→15K
0.0 - 3.1 mi
Overall
12804
Males
8975
M35-39
8975
5K→10K
3.1 - 6.2 mi
Overall
13179
Males
9237
M35-39
9237
10K→15K
6.2 - 9.3 mi
Overall
12804
Males
8975
M35-39
8975
15K→21K
9.3 - 13.1 mi
Overall
11807
Males
8349
M35-39
8349
21K→25K
13.1 - 15.5 mi
Overall
10752
Males
7606
M35-39
7606
25K→30K
15.5 - 18.6 mi
Overall
9302
Males
6566
M35-39
6566
30K→35K
18.6 - 21.8 mi
Overall
7778
Males
5428
M35-39
5428
35K→40K
21.8 - 24.9 mi
Overall
6942
Males
4704
M35-39
4704
40K→Finish
24.9 - 26.2 mi
Overall
9111
Males
5832
M35-39
5832
Passing Analysis
| Segment | Movement | Rank |
|---|---|---|
| Start → 5K | - | #13106 |
| 5K → 10K | 380400*+20 | #13106 → #13086 |
| 10K → 15K | 180383*+203 | #13086 → #12883 |
| 15K → 21K | 100523*+423 | #12883 → #12460 |
| 21K → 25K | 43449*+406 | #12460 → #12054 |
| 25K → 30K | 31733*+702 | #12054 → #11352 |
| 30K → 35K | 22891*+869 | #11352 → #10483 |
| 35K → 40K | 25819*+794 | #10483 → #9689 |
| 40K → Finish | 56197*+141 | #9689 → #9548 |
| TOTALS | 8374395*+3558 | #13106 → #9548 |
* Includes athletes who did not complete a segment (DNF/DNQ).
Passing Visualized
Passing Circle
Position Flow
Race Lanes
Upload your GPX file
Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps
.gpx files up to 10MB
Export Track Data
Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.
Questions or issues regarding timing data?
If you notice any discrepancies in your timing data or have questions about your results, our support team can help.
Contact Race SupportQuick Links
Find another athlete or browse the full results
Public Race Data
Enhanced athlete results built from publicly available data.
Race managed by
U.S. Marine Corps Community Services (MCCS)
Race timed by
Timing Productions