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BOSTON MARATHON 2025

Michael Cheung

Bib: 4503•M

ON

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 25%
Gender (Male)
#0 / 16105
Top 37%
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
21:56
Rank: #8281
Start → 5K
21:56 | 7:04/mi
10K· 6.21 mi
43:47
Rank: #8218 (+63)
5K → 10K
21:51 | 7:02/mi
15K· 9.32 mi
1:05:46
Rank: #8158 (+60)
10K → 15K
21:59 | 7:05/mi
20K· 12.43 mi
1:28:07
Rank: #8110 (+48)
15K → 20K
22:21 | 7:12/mi
Half· 13.11 mi
1:32:56
Rank: #8095 (+15)
20K → Half
4:49 | 7:04/mi
25K· 15.53 mi
1:50:46
Rank: #8144 (-49)
Half → 25K
17:50 | 7:21/mi
30K· 18.64 mi
2:14:22
Rank: #8086 (+58)
25K → 30K
23:36 | 7:36/mi
20M
2:24:46
Rank: #8043 (+43)
30K → 20M
10:24 | 7:39/mi
21M
2:32:21
Rank: #7780 (+263)
20M → 21M
7:35 | 7:35/mi
35K· 21.75 mi
2:38:01
Rank: #7792 (-12)
21M → 35K
5:40 | 7:35/mi
23M
2:47:23
Rank: #7652 (+140)
35K → 23M
9:22 | 7:29/mi
24M
2:54:38
Rank: #7547 (+105)
23M → 24M
7:15 | 7:15/mi
40K· 24.85 mi
3:00:46
Rank: #7371 (+176)
24M → 40K
6:08 | 7:10/mi
25.2M
3:03:20
Rank: #7286 (+85)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
3:09:48
Rank: #6999 (+287)
25.2M → Finish
6:28 | 6:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:56
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time1:36:52
Pace7:23 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:0221:567:0421:56
7:04
-
10K
6.21 mi10:48:5343:477:0321:51
7:02
-0:02
15K
9.32 mi11:10:521:05:467:0321:59
7:05
+0:03
20K
12.43 mi11:33:131:28:077:0522:21
7:12
+0:07
Half
13.11 mi11:38:021:32:567:054:49
7:04
-0:08
25K
15.53 mi11:55:521:50:467:0817:50
7:21
+0:17
30K
18.64 mi12:19:282:14:227:1223:36
7:36
+0:15
20M
20.00 mi12:29:522:24:467:1410:24
7:39
+0:03
21M
21.00 mi12:37:272:32:217:157:35
7:35
-0:04
35K
21.75 mi12:43:072:38:017:165:40
7:35
0:00
23M
23.00 mi12:52:292:47:237:179:22
7:29
-0:06
24M
24.00 mi12:59:442:54:387:177:15
7:15
-0:14
40K
24.85 mi13:05:523:00:467:166:08
7:10
-0:05
25.2M
25.20 mi13:08:263:03:207:172:34
7:27
+0:17
Finish
26.22 mi13:14:543:09:487:156:28
6:21
-1:06

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

6:21 /mi

Average Pace

7:15 /mi

Slowest Pace

7:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:17:03

41% of race

Time at Steady Pace

53:34

28% of race

Time at Slower Pace

59:11

31% of race

Average Pace: 7:14 /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 mi10:27:0221:567:0421:56
7:04
#8281
10K
6.21 mi10:48:5343:477:0321:51
7:02
#8218
15K
9.32 mi11:10:521:05:467:0321:59
7:05
#8158
20K
12.43 mi11:33:131:28:077:0522:21
7:12
#8110
Half
13.11 mi11:38:021:32:567:054:49
7:04
#8095
25K
15.53 mi11:55:521:50:467:0817:50
7:21
#8144
30K
18.64 mi12:19:282:14:227:1223:36
7:36
#8086
20M
20.00 mi12:29:522:24:467:1410:24
7:39
#8043
21M
21.00 mi12:37:272:32:217:157:35
7:35
#7780
35K
21.75 mi12:43:072:38:017:165:40
7:35
#7792
23M
23.00 mi12:52:292:47:237:179:22
7:29
#7652
24M
24.00 mi12:59:442:54:387:177:15
7:15
#7547
40K
24.85 mi13:05:523:00:467:166:08
7:10
#7371
25.2M
25.20 mi13:08:263:03:207:172:34
7:27
#7286
Finish
26.22 mi13:14:543:09:487:156:28
6:21
#6999
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi8281716971698148(Top 29%)7029(Top 44%)7029(Top 125%)
10K6.21 mi3.10 mi8218+637122+477122+478149(Top 29%)7062(Top 44%)7062(Top 125%)
15K9.32 mi3.11 mi8158+607069+537069+538148(Top 29%)7029(Top 44%)7029(Top 125%)
20K12.43 mi3.11 mi8110+487026+437026+438130(Top 29%)6944(Top 43%)6944(Top 123%)
Half13.11 mi0.68 mi8095+157009+177009+177934(Top 28%)6835(Top 42%)6835(Top 121%)
25K15.53 mi2.42 mi8144-497012-37012-38760(Top 31%)7195(Top 45%)7195(Top 128%)
30K18.64 mi3.11 mi8086+586918+946918+948401(Top 30%)6819(Top 42%)6819(Top 121%)
20M20.00 mi1.36 mi8043+436859+596859+598017(Top 28%)6444(Top 40%)6444(Top 114%)
21M21.00 mi1.00 mi7780+2636671+1886671+1884979(Top 18%)4346(Top 27%)4346(Top 77%)
35K21.75 mi0.75 mi7792-126650+216650+219248(Top 33%)6956(Top 43%)6956(Top 123%)
23M23.00 mi1.25 mi7652+1406517+1336517+1336511(Top 23%)5296(Top 33%)5296(Top 94%)
24M24.00 mi1.00 mi7547+1056417+1006417+1006098(Top 21%)4975(Top 31%)4975(Top 88%)
40K24.85 mi0.85 mi7371+1766277+1406277+1404888(Top 17%)4132(Top 26%)4132(Top 73%)
25.2M25.20 mi0.35 mi7286+856212+656212+653159(Top 11%)2800(Top 17%)2800(Top 50%)
Finish26.22 mi1.02 mi6999+2875993+2195993+2192086(Top 7%)1913(Top 12%)1913(Top 34%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

8148

Males

7029

M18-39

7029

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

8149

Males

7062

M18-39

7062

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

8148

Males

7029

M18-39

7029

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

8130

Males

6944

M18-39

6944

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

7934

Males

6835

M18-39

6835

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8760

Males

7195

M18-39

7195

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8401

Males

6819

M18-39

6819

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

8017

Males

6444

M18-39

6444

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4979

Males

4346

M18-39

4346

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

9248

Males

6956

M18-39

6956

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6511

Males

5296

M18-39

5296

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

6098

Males

4975

M18-39

4975

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4888

Males

4132

M18-39

4132

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3159

Males

2800

M18-39

2800

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

2086

Males

1913

M18-39

1913

Passing Analysis

Category:
Athletes Passed
2242
Passed By
960
Net Change
+1282
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8281
5K → 10K253190+63#8281#8218
10K → 15K172112+60#8218#8158
15K → 20K168120+48#8158#8110
20K → Half3419+15#8110#8095
Half → 25K117166-49#8095#8144
25K → 30K211153+58#8144#8086
30K → 20M12077+43#8086#8043
20M → 21M2630+263#8043#7780
21M → 35K5870-12#7780#7792
35K → 23M16424+140#7792#7652
23M → 24M12520+105#7652#7547
24M → 40K1859+176#7547#7371
40K → 25.2M850+85#7371#7286
25.2M → Finish2870+287#7286#6999
TOTALS2242960+1282
📊

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