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BOSTON MARATHON 2025

Qinglin Zhao

Bib: 3212 M CN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 13%
Gender (Male)
#0 / 16105
Top 22%
Division (M18-39)
#0 / 5642
Top 47%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:07/mi
18:59
↑ 97↓ 345
10K· 6.21 mi
6:12/mi
38:14
↑ 79↓ 138
15K· 9.32 mi
6:20/mi
57:55
↑ 67↓ 78
20K· 12.43 mi
6:40/mi
1:18:38
↑ 106↓ 86
Half· 13.11 mi
7:30/mi
1:23:45
↑ 19↓ 37
25K· 15.53 mi
6:51/mi
1:40:21
↑ 66↓ 88
30K· 18.64 mi
7:09/mi
2:02:33
↑ 181↓ 148
20M
7:28/mi
2:12:42
↑ 64↓ 50
21M
7:39/mi
2:20:21
↑ 106↓ 24
35K· 21.75 mi
6:50/mi
2:25:28
↑ 17↓ 86
23M
7:11/mi
2:34:28
↑ 23↓ 63
24M
6:54/mi
2:41:22
↓ 82
40K· 24.85 mi
7:05/mi
2:47:25
↓ 20
25.2M
7:50/mi
2:50:07
↑ 13↓ 16
Finish· 26.22 mi
7:02/mi
2:57:17
↑ 22↓ 21
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:23:456:23 /mi⚡ faster
2nd Half
1:33:327:08 /mi+11.7%
Positive split — 11.7% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
18:596:073.11 mi18:59
6:07
-
10K
38:146:093.10 mi19:15
6:12
+0:05
15K
57:556:133.11 mi19:41
6:20
+0:08
20K
1:18:386:203.11 mi20:43
6:40
+0:20
Half(13.11 mi)
1:23:456:230.68 mi5:07
7:30
+0:50
25K
1:40:216:282.42 mi16:36
6:51
-0:39
30K
2:02:336:343.11 mi22:12
7:09
+0:18
20M
2:12:426:381.36 mi10:09
7:28
+0:19
21M
2:20:216:411.00 mi7:39
7:39
+0:11
35K
2:25:286:410.75 mi5:07
6:50
-0:49
23M
2:34:286:431.25 mi9:00
7:11
+0:21
24M
2:41:226:431.00 mi6:54
6:54
-0:17
40K
2:47:256:440.85 mi6:03
7:05
+0:11
25.2M
2:50:076:450.35 mi2:42
7:50
+0:45
Finish(26.22 mi)
2:57:176:461.02 mi7:10
7:02
-0:48
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:07 /mi

Average Pace

6:46 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:18:38

44% of race

Time at Steady Pace

1:13:02

41% of race

Time at Slower Pace

25:37

14% of race

Average Pace: 6:46 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi146013911391255824412441
10K3.10 mi1646-1861567-1761567-176189217991799
15K3.11 mi1912-2661818-2511818-251255824412441
20K3.11 mi2414-5022304-4862304-486414238843884
Half(13.11 mi)0.68 mi2796-3822666-3622666-3621160188118811
25K2.42 mi3117-3212971-3052971-305522047824782
30K3.11 mi3491-3743302-3313302-331556649844984
20M1.36 mi3677-1863466-1643466-164677556875687
21M1.00 mi3744-673520-543520-54534746174617
35K0.75 mi3746-23519+13519+1430138303830
23M1.25 mi3782-363540-213540-21477441504150
24M1.00 mi3768+143519+213519+21405535723572
40K0.85 mi3777-93517+23517+2430036983698
25.2M0.35 mi3782-53519-23519-2493940564056
Finish(26.22 mi)1.02 mi3824-423547-283547-28589946574657

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21story building
+97ft-345ft

Overall

2558

Males

2441

M18-39

2441

5K→10K

3.1 - 6.2 mi

Top 7%
×5story building
+79ft-138ft

Overall

1892

Males

1799

M18-39

1799

10K→15K

6.2 - 9.3 mi

Top 9%
×3story building
+67ft-78ft

Overall

2558

Males

2441

M18-39

2441

15K→20K

9.3 - 12.4 mi

Top 15%
×5story building
+106ft-86ft

Overall

4142

Males

3884

M18-39

3884

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11601

Males

8811

M18-39

8811

Half→25K

13.1 - 15.5 mi

Top 18%
×4story building
+66ft-88ft

Overall

5220

Males

4782

M18-39

4782

25K→30K

15.5 - 18.6 mi

Top 20%
×9story building
+181ft-148ft

Overall

5566

Males

4984

M18-39

4984

30K→20M

18.6 - 20.0 mi

Top 24%
×5story building
+64ft-50ft

Overall

6775

Males

5687

M18-39

5687

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

5347

Males

4617

M18-39

4617

21M→35K

21.0 - 21.8 mi

Top 15%
×7story building
+17ft-86ft

Overall

4301

Males

3830

M18-39

3830

35K→23M

21.8 - 23.0 mi

Top 17%
×5story building
+23ft-63ft

Overall

4774

Males

4150

M18-39

4150

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

4055

Males

3572

M18-39

3572

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4300

Males

3698

M18-39

3698

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4939

Males

4056

M18-39

4056

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2story building
+22ft-21ft

Overall

5899

Males

4657

M18-39

4657

Passing Analysis

Category:
▼Net Change
0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#1460
5K → 10K
20418-186
#1460 → #1646
10K → 15K
27711-266
#1646 → #1912
15K → 20K
51513-502
#1912 → #2414
20K → Half
3820-382
#2414 → #2796
Half → 25K
33918-321
#2796 → #3117
25K → 30K
41945-374
#3117 → #3491
30K → 20M
21226-186
#3491 → #3677
20M → 21M
10235-67
#3677 → #3744
21M → 35K
3028-2
#3744 → #3746
35K → 23M
9155-36
#3746 → #3782
23M → 24M
4155+14
#3782 → #3768
24M → 40K
5142-9
#3768 → #3777
40K → 25.2M
2318-5
#3777 → #3782
25.2M → Finish
8038-42
#3782 → #3824
TOTALS
2766402-2364
#1460 → #3824

Passing Visualized

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing