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BOSTON MARATHON 2025

Shih Min Chen

Bib: 4462•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:10/mi
22:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:42/mi
46:10
↑ 79↓ 1380.4%
15K· 9.32 mi
7:58/mi
1:10:54
↑ 67↓ 78
20K· 12.43 mi
8:59/mi
1:38:48
↑ 106↓ 860.1%
Half· 13.11 mi
9:02/mi
1:44:58
↑ 19↓ 370.5%
25K· 15.53 mi
9:07/mi
2:07:04
↑ 66↓ 880.2%
30K· 18.64 mi
10:27/mi
2:39:31
↑ 181↓ 1480.2%
20M
9:46/mi
2:52:48
↑ 64↓ 500.2%
21M
10:59/mi
3:03:47
↑ 106↓ 241.6%
35K· 21.75 mi
10:16/mi
3:11:28
↑ 17↓ 861.7%
23M
11:29/mi
3:25:51
↑ 23↓ 630.6%
24M
10:43/mi
3:36:34
↓ 821.3%
40K· 24.85 mi
9:42/mi
3:44:52
↓ 200.3%
25.2M
10:58/mi
3:48:39
↑ 13↓ 160.2%
Finish· 26.22 mi
8:43/mi
3:57:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:58
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time2:12:34
Pace10:07 /mi
📊Positive Split: 26.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:0622:157:1022:15
7:10
-
10K
6.21 mi10:49:0146:107:2623:55
7:42
+0:32
15K
9.32 mi11:13:451:10:547:3624:44
7:58
+0:16
20K
12.43 mi11:41:391:38:487:5727:54
8:59
+1:01
Half
13.11 mi11:47:491:44:588:006:10
9:02
+0:03
25K
15.53 mi12:09:552:07:048:1122:06
9:07
+0:05
30K
18.64 mi12:42:222:39:318:3332:27
10:27
+1:20
20M
20.00 mi12:55:392:52:488:3813:17
9:46
-0:41
21M
21.00 mi13:06:383:03:478:4510:59
10:59
+1:13
35K
21.75 mi13:14:193:11:288:487:41
10:16
-0:43
23M
23.00 mi13:28:423:25:518:5714:23
11:29
+1:13
24M
24.00 mi13:39:253:36:349:0110:43
10:43
-0:46
40K
24.85 mi13:47:433:44:529:038:18
9:42
-1:01
25.2M
25.20 mi13:51:303:48:399:043:47
10:58
+1:16
Finish
26.22 mi14:00:233:57:329:048:53
8:43
-2:15

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

7:10 /mi

Average Pace

9:04 /mi

Slowest Pace

11:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:51

48% of race

Time at Steady Pace

51:22

22% of race

Time at Slower Pace

1:12:19

30% of race

Average Pace: 9:04 /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 mi10:25:0622:157:1022:15
7:10
#9150
10K
6.21 mi10:49:0146:107:2623:55
7:42
#11510
15K
9.32 mi11:13:451:10:547:3624:44
7:58
#12927
20K
12.43 mi11:41:391:38:487:5727:54
8:59
#15545
Half
13.11 mi11:47:491:44:588:006:10
9:02
#15980
25K
15.53 mi12:09:552:07:048:1122:06
9:07
#16831
30K
18.64 mi12:42:222:39:318:3332:27
10:27
#18490
20M
20.00 mi12:55:392:52:488:3813:17
9:46
#18665
21M
21.00 mi13:06:383:03:478:4510:59
10:59
#18916
35K
21.75 mi13:14:193:11:288:487:41
10:16
#19136
23M
23.00 mi13:28:423:25:518:5714:23
11:29
#19651
24M
24.00 mi13:39:253:36:349:0110:43
10:43
#19914
40K
24.85 mi13:47:433:44:529:038:18
9:42
#19913
25.2M
25.20 mi13:51:303:48:399:043:47
10:58
#19920
Finish
26.22 mi14:00:233:57:329:048:53
8:43
#19849
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi91507702770215739(Top 55%)10701(Top 66%)10701(Top 476%)
10K6.21 mi3.10 mi11510-23608926-12248926-122413877(Top 49%)9956(Top 62%)9956(Top 443%)
15K9.32 mi3.11 mi12927-14179547-6219547-62115739(Top 55%)10701(Top 66%)10701(Top 476%)
20K12.43 mi3.11 mi15545-261810608-106110608-106120850(Top 73%)12821(Top 80%)12821(Top 571%)
Half13.11 mi0.68 mi15980-43510797-18910797-18921949(Top 77%)13308(Top 83%)13308(Top 592%)
25K15.53 mi2.42 mi16831-85111119-32211119-32220408(Top 72%)12590(Top 78%)12590(Top 560%)
30K18.64 mi3.11 mi18490-165911782-66311782-66322804(Top 80%)13526(Top 84%)13526(Top 602%)
20M20.00 mi1.36 mi18665-17511831-4911831-4920204(Top 71%)12236(Top 76%)12236(Top 545%)
21M21.00 mi1.00 mi18916-25111903-7211903-7221331(Top 75%)12660(Top 79%)12660(Top 563%)
35K21.75 mi0.75 mi19136-22011990-8711990-8722597(Top 80%)13202(Top 82%)13202(Top 588%)
23M23.00 mi1.25 mi19651-51512170-18012170-18024219(Top 85%)13949(Top 87%)13949(Top 621%)
24M24.00 mi1.00 mi19914-26312258-8812258-8823340(Top 82%)13478(Top 84%)13478(Top 600%)
40K24.85 mi0.85 mi19913+112249+912249+919495(Top 69%)11558(Top 72%)11558(Top 514%)
25.2M25.20 mi0.35 mi19920-712241+812241+820504(Top 72%)12037(Top 75%)12037(Top 536%)
Finish26.22 mi1.02 mi19849+7112198+4312198+4317572(Top 62%)10675(Top 66%)10675(Top 475%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

15739

Males

10701

M40-44

10701

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13877

Males

9956

M40-44

9956

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

15739

Males

10701

M40-44

10701

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20850

Males

12821

M40-44

12821

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

21949

Males

13308

M40-44

13308

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

20408

Males

12590

M40-44

12590

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

22804

Males

13526

M40-44

13526

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

20204

Males

12236

M40-44

12236

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

21331

Males

12660

M40-44

12660

21M→35K

21.0 - 21.8 mi

Top 80%
×7story building
+17ft-86ft

Overall

22597

Males

13202

M40-44

13202

35K→23M

21.8 - 23.0 mi

Top 85%
×5story building
+23ft-63ft

Overall

24219

Males

13949

M40-44

13949

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23340

Males

13478

M40-44

13478

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19495

Males

11558

M40-44

11558

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20504

Males

12037

M40-44

12037

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

17572

Males

10675

M40-44

10675

Passing Analysis

Category:
Athletes Passed
435
Passed By
11132
Net Change
-10699
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9150
5K → 10K22360-2360#9150#11510
10K → 15K201437-1417#11510#12927
15K → 20K132631-2618#12927#15545
20K → Half2437-435#15545#15980
Half → 25K26877-851#15980#16831
25K → 30K261685-1659#16831#18490
30K → 20M63238-175#18490#18665
20M → 21M43294-251#18665#18916
21M → 35K18238-220#18916#19136
35K → 23M17532-515#19136#19651
23M → 24M20283-263#19651#19914
24M → 40K6564+1#19914#19913
40K → 25.2M2532-7#19913#19920
25.2M → Finish9524+71#19920#19849
TOTALS43511132-10699
📊

Passing Visuals

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