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BOSTON MARATHON 2025

Jameson Law

Bib: 3488•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 10%
Gender (Male)
#0 / 16105
Top 17%
Division (M18-39)
#0 / 5642
Top 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:50
Rank: #5479
Start → 5K
20:50 | 6:42/mi
10K· 6.21 mi
41:41
Rank: #5439 (+40)
5K → 10K
20:51 | 6:43/mi
15K· 9.32 mi
1:02:26
Rank: #5237 (+202)
10K → 15K
20:45 | 6:41/mi
20K· 12.43 mi
1:23:02
Rank: #4830 (+407)
15K → 20K
20:36 | 6:38/mi
Half· 13.11 mi
1:27:23
Rank: #4685 (+145)
20K → Half
4:21 | 6:23/mi
25K· 15.53 mi
1:43:05
Rank: #4260 (+425)
Half → 25K
15:42 | 6:29/mi
30K· 18.64 mi
2:03:44
Rank: #3874 (+386)
25K → 30K
20:39 | 6:39/mi
20M
2:12:47
Rank: #3699 (+175)
30K → 20M
9:03 | 6:40/mi
21M
2:19:48
Rank: #3592 (+107)
20M → 21M
7:01 | 7:01/mi
35K· 21.75 mi
2:24:41
Rank: #3527 (+65)
21M → 35K
4:53 | 6:32/mi
23M
2:33:06
Rank: #3384 (+143)
35K → 23M
8:25 | 6:43/mi
24M
2:39:37
Rank: #3279 (+105)
23M → 24M
6:31 | 6:31/mi
40K· 24.85 mi
2:45:15
Rank: #3181 (+98)
24M → 40K
5:38 | 6:35/mi
25.2M
2:47:38
Rank: #3097 (+84)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:53:45
Rank: #2958 (+139)
25.2M → Finish
6:07 | 6:00/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:27:23
Pace6:40 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:26:22
Pace6:35 /mi
📊Negative Split: 1.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5320:506:4220:50
6:42
-
10K
6.21 mi10:43:4441:416:4220:51
6:43
+0:01
15K
9.32 mi11:04:291:02:266:4220:45
6:41
-0:02
20K
12.43 mi11:25:051:23:026:4120:36
6:38
-0:03
Half
13.11 mi11:29:261:27:236:404:21
6:23
-0:15
25K
15.53 mi11:45:081:43:056:3815:42
6:29
+0:06
30K
18.64 mi12:05:472:03:446:3820:39
6:39
+0:10
20M
20.00 mi12:14:502:12:476:389:03
6:40
+0:01
21M
21.00 mi12:21:512:19:486:397:01
7:01
+0:21
35K
21.75 mi12:26:442:24:416:394:53
6:32
-0:29
23M
23.00 mi12:35:092:33:066:398:25
6:43
+0:11
24M
24.00 mi12:41:402:39:376:396:31
6:31
-0:12
40K
24.85 mi12:47:182:45:156:395:38
6:35
+0:04
25.2M
25.20 mi12:49:412:47:386:392:23
6:55
+0:20
Finish
26.22 mi12:55:482:53:456:386:07
6:00
-0:55

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

6:00 /mi

Average Pace

6:38 /mi

Slowest Pace

7:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

43:12

25% of race

Time at Steady Pace

2:10:33

75% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:38 /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 mi10:22:5320:506:4220:50
6:42
#5479
10K
6.21 mi10:43:4441:416:4220:51
6:43
#5439
15K
9.32 mi11:04:291:02:266:4220:45
6:41
#5237
20K
12.43 mi11:25:051:23:026:4120:36
6:38
#4830
Half
13.11 mi11:29:261:27:236:404:21
6:23
#4685
25K
15.53 mi11:45:081:43:056:3815:42
6:29
#4260
30K
18.64 mi12:05:472:03:446:3820:39
6:39
#3874
20M
20.00 mi12:14:502:12:476:389:03
6:40
#3699
21M
21.00 mi12:21:512:19:486:397:01
7:01
#3592
35K
21.75 mi12:26:442:24:416:394:53
6:32
#3527
23M
23.00 mi12:35:092:33:066:398:25
6:43
#3384
24M
24.00 mi12:41:402:39:376:396:31
6:31
#3279
40K
24.85 mi12:47:182:45:156:395:38
6:35
#3181
25.2M
25.20 mi12:49:412:47:386:392:23
6:55
#3097
Finish
26.22 mi12:55:482:53:456:386:07
6:00
#2958
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5479508150814858(Top 17%)4529(Top 28%)4529(Top 80%)
10K6.21 mi3.10 mi5439+405033+485033+485420(Top 19%)5004(Top 31%)5004(Top 89%)
15K9.32 mi3.11 mi5237+2024861+1724861+1724858(Top 17%)4529(Top 28%)4529(Top 80%)
20K12.43 mi3.11 mi4830+4074502+3594502+3593883(Top 14%)3657(Top 23%)3657(Top 65%)
Half13.11 mi0.68 mi4685+1454374+1284374+1282906(Top 10%)2773(Top 17%)2773(Top 49%)
25K15.53 mi2.42 mi4260+4253995+3793995+3792750(Top 10%)2617(Top 16%)2617(Top 46%)
30K18.64 mi3.11 mi3874+3863647+3483647+3482625(Top 9%)2484(Top 15%)2484(Top 44%)
20M20.00 mi1.36 mi3699+1753484+1633484+1632278(Top 8%)2152(Top 13%)2152(Top 38%)
21M21.00 mi1.00 mi3592+1073382+1023382+1022312(Top 8%)2158(Top 13%)2158(Top 38%)
35K21.75 mi0.75 mi3527+653324+583324+582582(Top 9%)2401(Top 15%)2401(Top 43%)
23M23.00 mi1.25 mi3384+1433188+1363188+1362338(Top 8%)2176(Top 14%)2176(Top 39%)
24M24.00 mi1.00 mi3279+1053088+1003088+1002115(Top 7%)1962(Top 12%)1962(Top 35%)
40K24.85 mi0.85 mi3181+982996+922996+921925(Top 7%)1775(Top 11%)1775(Top 31%)
25.2M25.20 mi0.35 mi3097+842919+772919+771256(Top 4%)1158(Top 7%)1158(Top 21%)
Finish26.22 mi1.02 mi2958+1392791+1282791+128931(Top 3%)876(Top 5%)876(Top 16%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4858

Males

4529

M18-39

4529

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5420

Males

5004

M18-39

5004

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4858

Males

4529

M18-39

4529

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3883

Males

3657

M18-39

3657

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2906

Males

2773

M18-39

2773

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2750

Males

2617

M18-39

2617

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2625

Males

2484

M18-39

2484

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2278

Males

2152

M18-39

2152

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2312

Males

2158

M18-39

2158

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2582

Males

2401

M18-39

2401

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2338

Males

2176

M18-39

2176

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

2115

Males

1962

M18-39

1962

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1925

Males

1775

M18-39

1775

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1256

Males

1158

M18-39

1158

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

931

Males

876

M18-39

876

Passing Analysis

Category:
Athletes Passed
2770
Passed By
249
Net Change
+2521
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5479
5K → 10K205165+40#5479#5439
10K → 15K24038+202#5439#5237
15K → 20K4136+407#5237#4830
20K → Half1450+145#4830#4685
Half → 25K4250+425#4685#4260
25K → 30K3915+386#4260#3874
30K → 20M1783+175#3874#3699
20M → 21M1136+107#3699#3592
21M → 35K716+65#3592#3527
35K → 23M1485+143#3527#3384
23M → 24M1116+105#3384#3279
24M → 40K1046+98#3279#3181
40K → 25.2M840+84#3181#3097
25.2M → Finish1423+139#3097#2958
TOTALS2770249+2521
📊

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