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BOSTON MARATHON 2025

Chi Shing Andy Chan

Bib: 14149•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:33
Rank: #15691
Start → 5K
24:33 | 7:54/mi
10K· 6.21 mi
49:02
Rank: #15586 (+105)
5K → 10K
24:29 | 7:53/mi
15K· 9.32 mi
1:14:24
Rank: #16187 (-601)
10K → 15K
25:22 | 8:10/mi
20K· 12.43 mi
1:40:08
Rank: #16357 (-170)
15K → 20K
25:44 | 8:17/mi
Half· 13.11 mi
1:45:43
Rank: #16411 (-54)
20K → Half
5:35 | 8:11/mi
25K· 15.53 mi
2:05:43
Rank: #16270 (+141)
Half → 25K
20:00 | 8:15/mi
30K· 18.64 mi
2:32:55
Rank: #16227 (+43)
25K → 30K
27:12 | 8:45/mi
20M
2:44:46
Rank: #16123 (+104)
30K → 20M
11:51 | 8:43/mi
21M
2:54:32
Rank: #16148 (-25)
20M → 21M
9:46 | 9:46/mi
35K· 21.75 mi
3:00:27
Rank: #15957 (+191)
21M → 35K
5:55 | 7:55/mi
23M
3:10:56
Rank: #15708 (+249)
35K → 23M
10:29 | 8:22/mi
24M
3:18:52
Rank: #15508 (+200)
23M → 24M
7:56 | 7:56/mi
40K· 24.85 mi
3:25:56
Rank: #15340 (+168)
24M → 40K
7:04 | 8:16/mi
25.2M
3:29:00
Rank: #15272 (+68)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:37:05
Rank: #15147 (+125)
25.2M → Finish
8:05 | 7:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:43
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:51:22
Pace8:30 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4524:337:5424:33
7:54
-
10K
6.21 mi11:19:1449:027:5324:29
7:53
-0:01
15K
9.32 mi11:44:361:14:247:5925:22
8:10
+0:17
20K
12.43 mi12:10:201:40:088:0325:44
8:17
+0:07
Half
13.11 mi12:15:551:45:438:045:35
8:11
-0:06
25K
15.53 mi12:35:552:05:438:0620:00
8:15
+0:04
30K
18.64 mi13:03:072:32:558:1227:12
8:45
+0:30
20M
20.00 mi13:14:582:44:468:1411:51
8:43
-0:02
21M
21.00 mi13:24:442:54:328:199:46
9:46
+1:03
35K
21.75 mi13:30:393:00:278:185:55
7:55
-1:51
23M
23.00 mi13:41:083:10:568:1810:29
8:22
+0:27
24M
24.00 mi13:49:043:18:528:177:56
7:56
-0:26
40K
24.85 mi13:56:083:25:568:177:04
8:16
+0:20
25.2M
25.20 mi13:59:123:29:008:183:04
8:54
+0:38
Finish
26.22 mi14:07:173:37:058:178:05
7:56
-0:58

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

7:53 /mi

Average Pace

8:17 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:10:58

33% of race

Time at Steady Pace

1:34:14

43% of race

Time at Slower Pace

51:53

24% of race

Average Pace: 8:17 /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 mi10:54:4524:337:5424:33
7:54
#15691
10K
6.21 mi11:19:1449:027:5324:29
7:53
#15586
15K
9.32 mi11:44:361:14:247:5925:22
8:10
#16187
20K
12.43 mi12:10:201:40:088:0325:44
8:17
#16357
Half
13.11 mi12:15:551:45:438:045:35
8:11
#16411
25K
15.53 mi12:35:552:05:438:0620:00
8:15
#16270
30K
18.64 mi13:03:072:32:558:1227:12
8:45
#16227
20M
20.00 mi13:14:582:44:468:1411:51
8:43
#16123
21M
21.00 mi13:24:442:54:328:199:46
9:46
#16148
35K
21.75 mi13:30:393:00:278:185:55
7:55
#15957
23M
23.00 mi13:41:083:10:568:1810:29
8:22
#15708
24M
24.00 mi13:49:043:18:528:177:56
7:56
#15508
40K
24.85 mi13:56:083:25:568:177:04
8:16
#15340
25.2M
25.20 mi13:59:123:29:008:183:04
8:54
#15272
Finish
26.22 mi14:07:173:37:058:178:05
7:56
#15147
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi15691106941069417160(Top 60%)11285(Top 70%)11285(Top 565%)
10K6.21 mi3.10 mi15586+10510650+4410650+4415515(Top 55%)10627(Top 66%)10627(Top 532%)
15K9.32 mi3.11 mi16187-60110892-24210892-24217160(Top 60%)11285(Top 70%)11285(Top 565%)
20K12.43 mi3.11 mi16357-17010952-6010952-6016822(Top 59%)11095(Top 69%)11095(Top 556%)
Half13.11 mi0.68 mi16411-5410981-2910981-2917114(Top 60%)11215(Top 70%)11215(Top 562%)
25K15.53 mi2.42 mi16270+14110898+8310898+8315601(Top 55%)10483(Top 65%)10483(Top 525%)
30K18.64 mi3.11 mi16227+4310821+7710821+7716314(Top 57%)10627(Top 66%)10627(Top 532%)
20M20.00 mi1.36 mi16123+10410737+8410737+8415174(Top 53%)9998(Top 62%)9998(Top 501%)
21M21.00 mi1.00 mi16148-2510723+1410723+1417308(Top 61%)10824(Top 67%)10824(Top 542%)
35K21.75 mi0.75 mi15957+19110612+11110612+11111628(Top 41%)8163(Top 51%)8163(Top 409%)
23M23.00 mi1.25 mi15708+24910468+14410468+14412498(Top 44%)8476(Top 53%)8476(Top 425%)
24M24.00 mi1.00 mi15508+20010373+9510373+9510768(Top 38%)7572(Top 47%)7572(Top 379%)
40K24.85 mi0.85 mi15340+16810258+11510258+11511956(Top 42%)8037(Top 50%)8037(Top 403%)
25.2M25.20 mi0.35 mi15272+6810217+4110217+4111180(Top 39%)7586(Top 47%)7586(Top 380%)
Finish26.22 mi1.02 mi15147+12510147+7010147+7012416(Top 44%)8249(Top 51%)8249(Top 413%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21stories
+97ft-345ft

Overall

17160

Males

11285

M50-54

11285

5K→10K

3.1 - 6.2 mi

Top 55%
×5stories
+79ft-138ft

Overall

15515

Males

10627

M50-54

10627

10K→15K

6.2 - 9.3 mi

Top 60%
×3stories
+67ft-78ft

Overall

17160

Males

11285

M50-54

11285

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

16822

Males

11095

M50-54

11095

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

17114

Males

11215

M50-54

11215

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

15601

Males

10483

M50-54

10483

25K→30K

15.5 - 18.6 mi

Top 57%
×9stories
+181ft-148ft

Overall

16314

Males

10627

M50-54

10627

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

15174

Males

9998

M50-54

9998

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

17308

Males

10824

M50-54

10824

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

11628

Males

8163

M50-54

8163

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12498

Males

8476

M50-54

8476

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10768

Males

7572

M50-54

7572

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11956

Males

8037

M50-54

8037

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11180

Males

7586

M50-54

7586

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

12416

Males

8249

M50-54

8249

Passing Analysis

Category:
Athletes Passed
2396
Passed By
1852
Net Change
+544
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15691
5K → 10K373268+105#15691#15586
10K → 15K67668-601#15586#16187
15K → 20K159329-170#16187#16357
20K → Half2074-54#16357#16411
Half → 25K22887+141#16411#16270
25K → 30K243200+43#16270#16227
30K → 20M16359+104#16227#16123
20M → 21M94119-25#16123#16148
21M → 35K1943+191#16148#15957
35K → 23M26415+249#15957#15708
23M → 24M2011+200#15708#15508
24M → 40K1746+168#15508#15340
40K → 25.2M735+68#15340#15272
25.2M → Finish14318+125#15272#15147
TOTALS23961852+544
📊

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