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BOSTON MARATHON 2025

Chan Lung

Bib: 7631•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 27%
Gender (Male)
#0 / 16105
Top 40%
Masters (Masters Men)
#0 / 10463
Top 27%
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:31
Rank: #4643
Start → 5K
20:31 | 6:36/mi
10K· 6.21 mi
41:15
Rank: #4817 (-174)
5K → 10K
20:44 | 6:40/mi
15K· 9.32 mi
1:02:14
Rank: #5042 (-225)
10K → 15K
20:59 | 6:45/mi
20K· 12.43 mi
1:23:22
Rank: #5073 (-31)
15K → 20K
21:08 | 6:48/mi
Half· 13.11 mi
1:27:56
Rank: #5073
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:44:40
Rank: #5134 (-61)
Half → 25K
16:44 | 6:54/mi
30K· 18.64 mi
2:06:54
Rank: #5230 (-96)
25K → 30K
22:14 | 7:09/mi
20M
2:16:49
Rank: #5280 (-50)
30K → 20M
9:55 | 7:18/mi
21M
2:25:52
Rank: #5727 (-447)
20M → 21M
9:03 | 9:03/mi
35K· 21.75 mi
2:31:43
Rank: #5874 (-147)
21M → 35K
5:51 | 7:49/mi
23M
2:42:40
Rank: #6256 (-382)
35K → 23M
10:57 | 8:45/mi
24M
2:51:57
Rank: #6731 (-475)
23M → 24M
9:17 | 9:17/mi
40K· 24.85 mi
3:00:08
Rank: #7198 (-467)
24M → 40K
8:11 | 9:34/mi
25.2M
3:03:42
Rank: #7378 (-180)
40K → 25.2M
3:34 | 10:21/mi
Finish· 26.22 mi
3:12:38
Rank: #7785 (-407)
25.2M → Finish
8:56 | 8:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:56
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:44:42
Pace7:59 /mi
📊Positive Split: 19.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:2420:316:3620:31
6:36
-
10K
6.21 mi10:48:0841:156:3820:44
6:40
+0:04
15K
9.32 mi11:09:071:02:146:4120:59
6:45
+0:05
20K
12.43 mi11:30:151:23:226:4221:08
6:48
+0:03
Half
13.11 mi11:34:491:27:566:424:34
6:42
-0:06
25K
15.53 mi11:51:331:44:406:4416:44
6:54
+0:12
30K
18.64 mi12:13:472:06:546:4822:14
7:09
+0:15
20M
20.00 mi12:23:422:16:496:509:55
7:18
+0:09
21M
21.00 mi12:32:452:25:526:579:03
9:03
+1:45
35K
21.75 mi12:38:362:31:436:595:51
7:49
-1:14
23M
23.00 mi12:49:332:42:407:0410:57
8:45
+0:56
24M
24.00 mi12:58:502:51:577:109:17
9:17
+0:32
40K
24.85 mi13:07:013:00:087:158:11
9:34
+0:17
25.2M
25.20 mi13:10:353:03:427:173:34
10:21
+0:47
Finish
26.22 mi13:19:313:12:387:218:56
8:46
-1:35

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

6:36 /mi

Average Pace

7:21 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

41:15

21% of race

Time at Steady Pace

1:41:25

53% of race

Time at Slower Pace

49:58

26% of race

Average Pace: 7:21 /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 mi10:27:2420:316:3620:31
6:36
#4643
10K
6.21 mi10:48:0841:156:3820:44
6:40
#4817
15K
9.32 mi11:09:071:02:146:4120:59
6:45
#5042
20K
12.43 mi11:30:151:23:226:4221:08
6:48
#5073
Half
13.11 mi11:34:491:27:566:424:34
6:42
#5073
25K
15.53 mi11:51:331:44:406:4416:44
6:54
#5134
30K
18.64 mi12:13:472:06:546:4822:14
7:09
#5230
20M
20.00 mi12:23:422:16:496:509:55
7:18
#5280
21M
21.00 mi12:32:452:25:526:579:03
9:03
#5727
35K
21.75 mi12:38:362:31:436:595:51
7:49
#5874
23M
23.00 mi12:49:332:42:407:0410:57
8:45
#6256
24M
24.00 mi12:58:502:51:577:109:17
9:17
#6731
40K
24.85 mi13:07:013:00:087:158:11
9:34
#7198
25.2M
25.20 mi13:10:353:03:427:173:34
10:21
#7378
Finish
26.22 mi13:19:313:12:387:218:56
8:46
#7785
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4643435543555643(Top 20%)5160(Top 32%)5160(Top 230%)
10K6.21 mi3.10 mi4817-1744505-1504505-1505110(Top 18%)4762(Top 30%)4762(Top 212%)
15K9.32 mi3.11 mi5042-2254699-1944699-1945643(Top 20%)5160(Top 32%)5160(Top 230%)
20K12.43 mi3.11 mi5073-314718-194718-195327(Top 19%)4893(Top 30%)4893(Top 218%)
Half13.11 mi0.68 mi50734713+54713+55271(Top 19%)4866(Top 30%)4866(Top 217%)
25K15.53 mi2.42 mi5134-614758-454758-455695(Top 20%)5157(Top 32%)5157(Top 230%)
30K18.64 mi3.11 mi5230-964810-524810-525661(Top 20%)5064(Top 31%)5064(Top 225%)
20M20.00 mi1.36 mi5280-504840-304840-305792(Top 20%)5053(Top 31%)5053(Top 225%)
21M21.00 mi1.00 mi5727-4475203-3635203-36313762(Top 48%)9214(Top 57%)9214(Top 410%)
35K21.75 mi0.75 mi5874-1475304-1015304-10110918(Top 38%)7801(Top 48%)7801(Top 347%)
23M23.00 mi1.25 mi6256-3825574-2705574-27014769(Top 52%)9513(Top 59%)9513(Top 423%)
24M24.00 mi1.00 mi6731-4755884-3105884-31018708(Top 66%)11264(Top 70%)11264(Top 501%)
40K24.85 mi0.85 mi7198-4676167-2836167-28318951(Top 67%)11282(Top 70%)11282(Top 502%)
25.2M25.20 mi0.35 mi7378-1806266-996266-9918364(Top 65%)10972(Top 68%)10972(Top 488%)
Finish26.22 mi1.02 mi7785-4076494-2286494-22817830(Top 63%)10778(Top 67%)10778(Top 480%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5643

Males

5160

M40-44

5160

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

5110

Males

4762

M40-44

4762

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5643

Males

5160

M40-44

5160

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5327

Males

4893

M40-44

4893

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5271

Males

4866

M40-44

4866

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5695

Males

5157

M40-44

5157

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5661

Males

5064

M40-44

5064

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5792

Males

5053

M40-44

5053

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

13762

Males

9214

M40-44

9214

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10918

Males

7801

M40-44

7801

35K→23M

21.8 - 23.0 mi

Top 52%
×5stories
+23ft-63ft

Overall

14769

Males

9513

M40-44

9513

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

18708

Males

11264

M40-44

11264

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

18951

Males

11282

M40-44

11282

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18364

Males

10972

M40-44

10972

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

17830

Males

10778

M40-44

10778

Passing Analysis

Category:
Athletes Passed
654
Passed By
3796
Net Change
-3142
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4643
5K → 10K103277-174#4643#4817
10K → 15K53278-225#4817#5042
15K → 20K111142-31#5042#5073
20K → Half27270#5073#5073
Half → 25K81142-61#5073#5134
25K → 30K137233-96#5134#5230
30K → 20M60110-50#5230#5280
20M → 21M10457-447#5280#5727
21M → 35K16163-147#5727#5874
35K → 23M28410-382#5874#6256
23M → 24M11486-475#6256#6731
24M → 40K7474-467#6731#7198
40K → 25.2M4184-180#7198#7378
25.2M → Finish6413-407#7378#7785
TOTALS6543796-3142
📊

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