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BOSTON MARATHON 2025

Andy Chang

Bib: 19226•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 49%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Top 42%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:05
Rank: #14382
Start → 5K
7:45/mi
24:05 split
10K· 6.21 mi
47:40
Rank: #13674 (+708)
5K → 10K
7:35/mi
23:35 split
15K· 9.32 mi
1:11:37
Rank: #13601 (+73)
10K → 15K
7:43/mi
23:57 split
20K· 12.43 mi
1:35:55
Rank: #13523 (+78)
15K → 20K
7:49/mi
24:18 split
Half· 13.11 mi
1:41:11
Rank: #13526 (-3)
20K → Half
7:43/mi
5:16 split
25K· 15.53 mi
2:00:33
Rank: #13529 (-3)
Half → 25K
7:59/mi
19:22 split
30K· 18.64 mi
2:26:51
Rank: #13695 (-166)
25K → 30K
8:28/mi
26:18 split
20M
2:38:30
Rank: #13710 (-15)
30K → 20M
8:34/mi
11:39 split
21M
2:47:54
Rank: #13818 (-108)
20M → 21M
9:24/mi
9:24 split
35K· 21.75 mi
2:54:14
Rank: #13852 (-34)
21M → 35K
8:28/mi
6:20 split
23M
3:05:26
Rank: #14027 (-175)
35K → 23M
8:57/mi
11:12 split
24M
3:13:49
Rank: #14031 (-4)
23M → 24M
8:23/mi
8:23 split
40K· 24.85 mi
3:21:08
Rank: #13979 (+52)
24M → 40K
8:33/mi
7:19 split
25.2M
3:24:32
Rank: #14020 (-41)
40K → 25.2M
9:52/mi
3:24 split
Finish· 26.22 mi
3:33:03
Rank: #14037 (-17)
25.2M → Finish
8:21/mi
8:31 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:11
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time1:51:52
Pace8:32 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4224:057:4524:05
7:45
-
10K
6.21 mi11:39:1747:407:4023:35
7:35
-0:10
15K
9.32 mi12:03:141:11:377:4123:57
7:43
+0:08
20K
12.43 mi12:27:321:35:557:4324:18
7:49
+0:06
Half
13.11 mi12:32:481:41:117:435:16
7:43
-0:06
25K
15.53 mi12:52:102:00:337:4619:22
7:59
+0:16
30K
18.64 mi13:18:282:26:517:5326:18
8:28
+0:29
20M
20.00 mi13:30:072:38:307:5511:39
8:34
+0:06
21M
21.00 mi13:39:312:47:548:009:24
9:24
+0:50
35K
21.75 mi13:45:512:54:148:016:20
8:28
-0:56
23M
23.00 mi13:57:033:05:268:0411:12
8:57
+0:29
24M
24.00 mi14:05:263:13:498:058:23
8:23
-0:34
40K
24.85 mi14:12:453:21:088:067:19
8:33
+0:10
25.2M
25.20 mi14:16:093:24:328:073:24
9:52
+1:19
Finish
26.22 mi14:24:403:33:038:088:31
8:21
-1:31

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

7:35 /mi

Average Pace

8:08 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:33

57% of race

Time at Steady Pace

1:08:30

32% of race

Time at Slower Pace

24:00

11% of race

Average Pace: 8:08 /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 mi11:15:4224:057:4524:05
7:45
#14382
10K
6.21 mi11:39:1747:407:4023:35
7:35
#13674
15K
9.32 mi12:03:141:11:377:4123:57
7:43
#13601
20K
12.43 mi12:27:321:35:557:4324:18
7:49
#13523
Half
13.11 mi12:32:481:41:117:435:16
7:43
#13526
25K
15.53 mi12:52:102:00:337:4619:22
7:59
#13529
30K
18.64 mi13:18:282:26:517:5326:18
8:28
#13695
20M
20.00 mi13:30:072:38:307:5511:39
8:34
#13710
21M
21.00 mi13:39:312:47:548:009:24
9:24
#13818
35K
21.75 mi13:45:512:54:148:016:20
8:28
#13852
23M
23.00 mi13:57:033:05:268:0411:12
8:57
#14027
24M
24.00 mi14:05:263:13:498:058:23
8:23
#14031
40K
24.85 mi14:12:453:21:088:067:19
8:33
#13979
25.2M
25.20 mi14:16:093:24:328:073:24
9:52
#14020
Finish
26.22 mi14:24:403:33:038:088:31
8:21
#14037
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi14382101911019113573(Top 48%)9759(Top 61%)9759(Top 592%)
10K6.21 mi3.10 mi13674+7089885+3069885+30612925(Top 46%)9563(Top 59%)9563(Top 580%)
15K9.32 mi3.11 mi13601+739816+699816+6913573(Top 48%)9759(Top 61%)9759(Top 592%)
20K12.43 mi3.11 mi13523+789743+739743+7313438(Top 47%)9624(Top 60%)9624(Top 584%)
Half13.11 mi0.68 mi13526-39741+29741+213515(Top 48%)9703(Top 60%)9703(Top 589%)
25K15.53 mi2.42 mi13529-39709+329709+3213777(Top 49%)9644(Top 60%)9644(Top 585%)
30K18.64 mi3.11 mi13695-1669722-139722-1314537(Top 51%)9848(Top 61%)9848(Top 598%)
20M20.00 mi1.36 mi13710-159699+239699+2314228(Top 50%)9561(Top 59%)9561(Top 580%)
21M21.00 mi1.00 mi13818-1089707-89707-815600(Top 55%)10044(Top 62%)10044(Top 609%)
35K21.75 mi0.75 mi13852-349707970715217(Top 54%)9816(Top 61%)9816(Top 596%)
23M23.00 mi1.25 mi14027-1759750-439750-4315922(Top 56%)10034(Top 62%)10034(Top 609%)
24M24.00 mi1.00 mi14031-49708+429708+4213749(Top 48%)9027(Top 56%)9027(Top 548%)
40K24.85 mi0.85 mi13979+529665+439665+4313769(Top 48%)8894(Top 55%)8894(Top 540%)
25.2M25.20 mi0.35 mi14020-419683-189683-1816314(Top 57%)10024(Top 62%)10024(Top 608%)
Finish26.22 mi1.02 mi14037-179661+229661+2215263(Top 54%)9593(Top 60%)9593(Top 582%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

13573

Males

9759

M55-59

9759

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

12925

Males

9563

M55-59

9563

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

13573

Males

9759

M55-59

9759

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

13438

Males

9624

M55-59

9624

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

13515

Males

9703

M55-59

9703

Half→25K

13.1 - 15.5 mi

Top 49%
×4story building
+66ft-88ft

Overall

13777

Males

9644

M55-59

9644

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

14537

Males

9848

M55-59

9848

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

14228

Males

9561

M55-59

9561

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

15600

Males

10044

M55-59

10044

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

15217

Males

9816

M55-59

9816

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

15922

Males

10034

M55-59

10034

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

13749

Males

9027

M55-59

9027

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13769

Males

8894

M55-59

8894

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16314

Males

10024

M55-59

10024

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

15263

Males

9593

M55-59

9593

Passing Analysis

Category:
Athletes Passed
2232
Passed By
1887
Net Change
+345
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14382
5K → 10K76961+708#14382#13674
10K → 15K249176+73#13674#13601
15K → 20K228150+78#13601#13523
20K → Half2528-3#13523#13526
Half → 25K177180-3#13526#13529
25K → 30K194360-166#13529#13695
30K → 20M121136-15#13695#13710
20M → 21M71179-108#13710#13818
21M → 35K4680-34#13818#13852
35K → 23M71246-175#13852#14027
23M → 24M8690-4#14027#14031
24M → 40K9745+52#14031#13979
40K → 25.2M2465-41#13979#14020
25.2M → Finish7491-17#14020#14037
TOTALS22321887+345
📊

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