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BOSTON MARATHON 2025

Ziming Xia

Bib: 1954•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 2%
Gender (Male)
#0 / 16105
Top 4%
Division (M18-39)
#0 / 5642
Top 10%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:06
Rank: #1591
Start → 5K
19:06 | 6:09/mi
10K· 6.21 mi
37:40
Rank: #1260 (+331)
5K → 10K
18:34 | 5:59/mi
15K· 9.32 mi
56:07
Rank: #1111 (+149)
10K → 15K
18:27 | 5:56/mi
20K· 12.43 mi
1:14:36
Rank: #1001 (+110)
15K → 20K
18:29 | 5:57/mi
Half· 13.11 mi
1:18:35
Rank: #988 (+13)
20K → Half
3:59 | 5:50/mi
25K· 15.53 mi
1:32:56
Rank: #904 (+84)
Half → 25K
14:21 | 5:55/mi
30K· 18.64 mi
1:52:03
Rank: #851 (+53)
25K → 30K
19:07 | 6:09/mi
20M
2:00:28
Rank: #820 (+31)
30K → 20M
8:25 | 6:12/mi
21M
2:06:57
Rank: #798 (+22)
20M → 21M
6:29 | 6:29/mi
35K· 21.75 mi
2:11:26
Rank: #777 (+21)
21M → 35K
4:29 | 6:00/mi
23M
2:19:13
Rank: #760 (+17)
35K → 23M
7:47 | 6:13/mi
24M
2:25:13
Rank: #732 (+28)
23M → 24M
6:00 | 6:00/mi
40K· 24.85 mi
2:30:33
Rank: #723 (+9)
24M → 40K
5:20 | 6:14/mi
25.2M
2:32:53
Rank: #714 (+9)
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:38:49
Rank: #698 (+16)
25.2M → Finish
5:56 | 5:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:35
Pace6:00 /mi
2nd Half
Distance13.11 mi
Time1:20:14
Pace6:07 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:4819:066:0919:06
6:09
-
10K
6.21 mi10:38:2237:406:0418:34
5:59
-0:10
15K
9.32 mi10:56:4956:076:0118:27
5:56
-0:03
20K
12.43 mi11:15:181:14:366:0018:29
5:57
+0:01
Half
13.11 mi11:19:171:18:356:003:59
5:50
-0:07
25K
15.53 mi11:33:381:32:565:5914:21
5:55
+0:05
30K
18.64 mi11:52:451:52:036:0119:07
6:09
+0:14
20M
20.00 mi12:01:102:00:286:018:25
6:12
+0:03
21M
21.00 mi12:07:392:06:576:036:29
6:29
+0:17
35K
21.75 mi12:12:082:11:266:034:29
6:00
-0:29
23M
23.00 mi12:19:552:19:136:037:47
6:13
+0:13
24M
24.00 mi12:25:552:25:136:036:00
6:00
-0:13
40K
24.85 mi12:31:152:30:336:035:20
6:14
+0:14
25.2M
25.20 mi12:33:352:32:536:042:20
6:46
+0:32
Finish
26.22 mi12:39:312:38:496:045:56
5:49
-0:57

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

5:49 /mi

Average Pace

6:04 /mi

Slowest Pace

6:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:30:00

94% of race

Time at Steady Pace

8:49

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:03 /mi

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

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:19:4819:066:0919:06
6:09
#1591
10K
6.21 mi10:38:2237:406:0418:34
5:59
#1260
15K
9.32 mi10:56:4956:076:0118:27
5:56
#1111
20K
12.43 mi11:15:181:14:366:0018:29
5:57
#1001
Half
13.11 mi11:19:171:18:356:003:59
5:50
#988
25K
15.53 mi11:33:381:32:565:5914:21
5:55
#904
30K
18.64 mi11:52:451:52:036:0119:07
6:09
#851
20M
20.00 mi12:01:102:00:286:018:25
6:12
#820
21M
21.00 mi12:07:392:06:576:036:29
6:29
#798
35K
21.75 mi12:12:082:11:266:034:29
6:00
#777
23M
23.00 mi12:19:552:19:136:037:47
6:13
#760
24M
24.00 mi12:25:552:25:136:036:00
6:00
#732
40K
24.85 mi12:31:152:30:336:035:20
6:14
#723
25.2M
25.20 mi12:33:352:32:536:042:20
6:46
#714
Finish
26.22 mi12:39:312:38:496:045:56
5:49
#698
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi159115101510847(Top 3%)795(Top 5%)795(Top 14%)
10K6.21 mi3.10 mi1260+3311197+3131197+3131039(Top 4%)979(Top 6%)979(Top 17%)
15K9.32 mi3.11 mi1111+1491050+1471050+147847(Top 3%)795(Top 5%)795(Top 14%)
20K12.43 mi3.11 mi1001+110944+106944+106739(Top 3%)691(Top 4%)691(Top 12%)
Half13.11 mi0.68 mi988+13931+13931+13671(Top 2%)628(Top 4%)628(Top 11%)
25K15.53 mi2.42 mi904+84852+79852+79612(Top 2%)566(Top 4%)566(Top 10%)
30K18.64 mi3.11 mi851+53799+53799+53793(Top 3%)744(Top 5%)744(Top 13%)
20M20.00 mi1.36 mi820+31769+30769+30707(Top 2%)666(Top 4%)666(Top 12%)
21M21.00 mi1.00 mi798+22748+21748+21647(Top 2%)611(Top 4%)611(Top 11%)
35K21.75 mi0.75 mi777+21727+21727+21710(Top 2%)663(Top 4%)663(Top 12%)
23M23.00 mi1.25 mi760+17711+16711+16700(Top 2%)661(Top 4%)661(Top 12%)
24M24.00 mi1.00 mi732+28683+28683+28581(Top 2%)544(Top 3%)544(Top 10%)
40K24.85 mi0.85 mi723+9674+9674+9809(Top 3%)758(Top 5%)758(Top 13%)
25.2M25.20 mi0.35 mi714+9665+9665+9860(Top 3%)793(Top 5%)793(Top 14%)
Finish26.22 mi1.02 mi698+16649+16649+16543(Top 2%)508(Top 3%)508(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

847

Males

795

M18-39

795

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1039

Males

979

M18-39

979

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

847

Males

795

M18-39

795

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

739

Males

691

M18-39

691

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

671

Males

628

M18-39

628

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

612

Males

566

M18-39

566

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

793

Males

744

M18-39

744

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

707

Males

666

M18-39

666

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

647

Males

611

M18-39

611

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

710

Males

663

M18-39

663

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

700

Males

661

M18-39

661

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

581

Males

544

M18-39

544

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

809

Males

758

M18-39

758

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

860

Males

793

M18-39

793

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

543

Males

508

M18-39

508

Passing Analysis

Category:
Athletes Passed
950
Passed By
57
Net Change
+893
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1591
5K → 10K3321+331#1591#1260
10K → 15K1534+149#1260#1111
15K → 20K1100+110#1111#1001
20K → Half130+13#1001#988
Half → 25K840+84#988#904
25K → 30K7118+53#904#851
30K → 20M343+31#851#820
20M → 21M275+22#820#798
21M → 35K265+21#798#777
35K → 23M2811+17#777#760
23M → 24M302+28#760#732
24M → 40K112+9#732#723
40K → 25.2M101+9#723#714
25.2M → Finish215+16#714#698
TOTALS95057+893
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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