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BOSTON MARATHON 2025

James Chen

Bib: 7106•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 42%
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:58
Rank: #5905
Start → 5K
20:58 | 6:45/mi
10K· 6.21 mi
42:11
Rank: #6208 (-303)
5K → 10K
21:13 | 6:50/mi
15K· 9.32 mi
1:03:19
Rank: #6130 (+78)
10K → 15K
21:08 | 6:48/mi
20K· 12.43 mi
1:25:27
Rank: #6635 (-505)
15K → 20K
22:08 | 7:07/mi
Half· 13.11 mi
1:30:26
Rank: #6819 (-184)
20K → Half
4:59 | 7:18/mi
25K· 15.53 mi
1:49:13
Rank: #7456 (-637)
Half → 25K
18:47 | 7:45/mi
30K· 18.64 mi
2:17:38
Rank: #9564 (-2108)
25K → 30K
28:25 | 9:09/mi
20M
2:30:19
Rank: #10388 (-824)
30K → 20M
12:41 | 9:20/mi
21M
2:39:59
Rank: #10821 (-433)
20M → 21M
9:40 | 9:40/mi
35K· 21.75 mi
2:46:08
Rank: #10910 (-89)
21M → 35K
6:09 | 8:13/mi
23M
2:57:15
Rank: #11189 (-279)
35K → 23M
11:07 | 8:53/mi
24M
3:06:04
Rank: #11436 (-247)
23M → 24M
8:49 | 8:49/mi
40K· 24.85 mi
3:13:38
Rank: #11607 (-171)
24M → 40K
7:34 | 8:51/mi
25.2M
3:17:03
Rank: #11713 (-106)
40K → 25.2M
3:25 | 9:54/mi
Finish· 26.22 mi
3:25:57
Rank: #11970 (-257)
25.2M → Finish
8:54 | 8:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:26
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:55:31
Pace8:49 /mi
📊Positive Split: 27.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:2420:586:4520:58
6:45
-
10K
6.21 mi10:48:3742:116:4721:13
6:50
+0:05
15K
9.32 mi11:09:451:03:196:4821:08
6:48
-0:02
20K
12.43 mi11:31:531:25:276:5322:08
7:07
+0:19
Half
13.11 mi11:36:521:30:266:544:59
7:18
+0:11
25K
15.53 mi11:55:391:49:137:0218:47
7:45
+0:27
30K
18.64 mi12:24:042:17:387:2328:25
9:09
+1:24
20M
20.00 mi12:36:452:30:197:3112:41
9:20
+0:11
21M
21.00 mi12:46:252:39:597:379:40
9:40
+0:20
35K
21.75 mi12:52:342:46:087:386:09
8:13
-1:27
23M
23.00 mi13:03:412:57:157:4211:07
8:53
+0:40
24M
24.00 mi13:12:303:06:047:458:49
8:49
-0:04
40K
24.85 mi13:20:043:13:387:477:34
8:51
+0:02
25.2M
25.20 mi13:23:293:17:037:493:25
9:54
+1:03
Finish
26.22 mi13:32:233:25:577:528:54
8:44
-1:10

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

6:45 /mi

Average Pace

7:52 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:13

53% of race

Time at Steady Pace

1:10:58

34% of race

Time at Slower Pace

25:46

13% of race

Average Pace: 7:51 /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 mi10:27:2420:586:4520:58
6:45
#5905
10K
6.21 mi10:48:3742:116:4721:13
6:50
#6208
15K
9.32 mi11:09:451:03:196:4821:08
6:48
#6130
20K
12.43 mi11:31:531:25:276:5322:08
7:07
#6635
Half
13.11 mi11:36:521:30:266:544:59
7:18
#6819
25K
15.53 mi11:55:391:49:137:0218:47
7:45
#7456
30K
18.64 mi12:24:042:17:387:2328:25
9:09
#9564
20M
20.00 mi12:36:452:30:197:3112:41
9:20
#10388
21M
21.00 mi12:46:252:39:597:379:40
9:40
#10821
35K
21.75 mi12:52:342:46:087:386:09
8:13
#10910
23M
23.00 mi13:03:412:57:157:4211:07
8:53
#11189
24M
24.00 mi13:12:303:06:047:458:49
8:49
#11436
40K
24.85 mi13:20:043:13:387:477:34
8:51
#11607
25.2M
25.20 mi13:23:293:17:037:493:25
9:54
#11713
Finish
26.22 mi13:32:233:25:577:528:54
8:44
#11970
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5905544054406118(Top 22%)5558(Top 35%)5558(Top 99%)
10K6.21 mi3.10 mi6208-3035688-2485688-2486705(Top 24%)6050(Top 38%)6050(Top 107%)
15K9.32 mi3.11 mi6130+785613+755613+756118(Top 22%)5558(Top 35%)5558(Top 99%)
20K12.43 mi3.11 mi6635-5055991-3785991-3787669(Top 27%)6660(Top 41%)6660(Top 118%)
Half13.11 mi0.68 mi6819-1846140-1496140-14910027(Top 35%)8049(Top 50%)8049(Top 143%)
25K15.53 mi2.42 mi7456-6376584-4446584-44411912(Top 42%)8807(Top 55%)8807(Top 156%)
30K18.64 mi3.11 mi9564-21087777-11937777-119318370(Top 65%)11550(Top 72%)11550(Top 205%)
20M20.00 mi1.36 mi10388-8248168-3918168-39118416(Top 65%)11404(Top 71%)11404(Top 202%)
21M21.00 mi1.00 mi10821-4338335-1678335-16716836(Top 59%)10610(Top 66%)10610(Top 188%)
35K21.75 mi0.75 mi10910-898352-178352-1713716(Top 48%)9139(Top 57%)9139(Top 162%)
23M23.00 mi1.25 mi11189-2798444-928444-9215535(Top 55%)9863(Top 61%)9863(Top 175%)
24M24.00 mi1.00 mi11436-2478528-848528-8416375(Top 58%)10190(Top 63%)10190(Top 181%)
40K24.85 mi0.85 mi11607-1718576-488576-4815427(Top 54%)9614(Top 60%)9614(Top 170%)
25.2M25.20 mi0.35 mi11713-1068616-408616-4016530(Top 58%)10123(Top 63%)10123(Top 179%)
Finish26.22 mi1.02 mi11970-2578705-898705-8917643(Top 62%)10696(Top 66%)10696(Top 190%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21stories
+97ft-345ft

Overall

6118

Males

5558

M18-39

5558

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6705

Males

6050

M18-39

6050

10K→15K

6.2 - 9.3 mi

Top 22%
×3stories
+67ft-78ft

Overall

6118

Males

5558

M18-39

5558

15K→20K

9.3 - 12.4 mi

Top 27%
×5stories
+106ft-86ft

Overall

7669

Males

6660

M18-39

6660

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

10027

Males

8049

M18-39

8049

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

11912

Males

8807

M18-39

8807

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

18370

Males

11550

M18-39

11550

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

18416

Males

11404

M18-39

11404

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

16836

Males

10610

M18-39

10610

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

13716

Males

9139

M18-39

9139

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

15535

Males

9863

M18-39

9863

23M→24M

23.0 - 24.0 mi

Top 58%
×6stories
+12ft-82ft

Overall

16375

Males

10190

M18-39

10190

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15427

Males

9614

M18-39

9614

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16530

Males

10123

M18-39

10123

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

17643

Males

10696

M18-39

10696

Passing Analysis

Category:
Athletes Passed
584
Passed By
6647
Net Change
-6065
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5905
5K → 10K89392-303#5905#6208
10K → 15K180102+78#6208#6130
15K → 20K49554-505#6130#6635
20K → Half3187-184#6635#6819
Half → 25K26663-637#6819#7456
25K → 30K152123-2108#7456#9564
30K → 20M19841-824#9564#10388
20M → 21M24457-433#10388#10821
21M → 35K39128-89#10821#10910
35K → 23M40319-279#10910#11189
23M → 24M39286-247#11189#11436
24M → 40K33204-171#11436#11607
40K → 25.2M9115-106#11607#11713
25.2M → Finish19276-257#11713#11970
TOTALS5846647-6065
📊

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