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BOSTON MARATHON 2025

Chi Keung Wong

Bib: 8852•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 30%
Gender (Male)
#0 / 16105
Top 43%
Masters (Masters Men)
#0 / 10463
Top 31%
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
20:09
Rank: #3751
Start → 5K
20:09 | 6:29/mi
10K· 6.21 mi
40:20
Rank: #3719 (+32)
5K → 10K
20:11 | 6:30/mi
15K· 9.32 mi
1:00:57
Rank: #3955 (-236)
10K → 15K
20:37 | 6:38/mi
20K· 12.43 mi
1:22:04
Rank: #4202 (-247)
15K → 20K
21:07 | 6:48/mi
Half· 13.11 mi
1:26:39
Rank: #4249 (-47)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:43:43
Rank: #4597 (-348)
Half → 25K
17:04 | 7:02/mi
30K· 18.64 mi
2:09:41
Rank: #6377 (-1780)
25K → 30K
25:58 | 8:21/mi
20M
2:21:45
Rank: #6986 (-609)
30K → 20M
12:04 | 8:53/mi
21M
2:31:26
Rank: #7456 (-470)
20M → 21M
9:41 | 9:41/mi
35K· 21.75 mi
2:38:05
Rank: #7821 (-365)
21M → 35K
6:39 | 8:53/mi
23M
2:50:22
Rank: #8707 (-886)
35K → 23M
12:17 | 9:49/mi
24M
2:58:54
Rank: #8974 (-267)
23M → 24M
8:32 | 8:32/mi
40K· 24.85 mi
3:05:47
Rank: #9017 (-43)
24M → 40K
6:53 | 8:03/mi
25.2M
3:08:30
Rank: #8926 (+91)
40K → 25.2M
2:43 | 7:53/mi
Finish· 26.22 mi
3:14:56
Rank: #8526 (+400)
25.2M → Finish
6:26 | 6:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:39
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:48:17
Pace8:16 /mi
📊Positive Split: 25.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:4520:096:2920:09
6:29
-
10K
6.21 mi11:05:5640:206:2920:11
6:30
+0:01
15K
9.32 mi11:26:331:00:576:3220:37
6:38
+0:08
20K
12.43 mi11:47:401:22:046:3621:07
6:48
+0:10
Half
13.11 mi11:52:151:26:396:374:35
6:43
-0:05
25K
15.53 mi12:09:191:43:436:4117:04
7:02
+0:19
30K
18.64 mi12:35:172:09:416:5725:58
8:21
+1:19
20M
20.00 mi12:47:212:21:457:0512:04
8:53
+0:32
21M
21.00 mi12:57:022:31:267:139:41
9:41
+0:48
35K
21.75 mi13:03:412:38:057:166:39
8:53
-0:48
23M
23.00 mi13:15:582:50:227:2412:17
9:49
+0:56
24M
24.00 mi13:24:302:58:547:278:32
8:32
-1:17
40K
24.85 mi13:31:233:05:477:286:53
8:03
-0:29
25.2M
25.20 mi13:34:063:08:307:292:43
7:53
-0:10
Finish
26.22 mi13:40:323:14:567:266:26
6:19
-1:34

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

6:19 /mi

Average Pace

7:26 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:09

57% of race

Time at Steady Pace

35:34

18% of race

Time at Slower Pace

49:13

25% of race

Average Pace: 7:26 /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 mi10:45:4520:096:2920:09
6:29
#3751
10K
6.21 mi11:05:5640:206:2920:11
6:30
#3719
15K
9.32 mi11:26:331:00:576:3220:37
6:38
#3955
20K
12.43 mi11:47:401:22:046:3621:07
6:48
#4202
Half
13.11 mi11:52:151:26:396:374:35
6:43
#4249
25K
15.53 mi12:09:191:43:436:4117:04
7:02
#4597
30K
18.64 mi12:35:172:09:416:5725:58
8:21
#6377
20M
20.00 mi12:47:212:21:457:0512:04
8:53
#6986
21M
21.00 mi12:57:022:31:267:139:41
9:41
#7456
35K
21.75 mi13:03:412:38:057:166:39
8:53
#7821
23M
23.00 mi13:15:582:50:227:2412:17
9:49
#8707
24M
24.00 mi13:24:302:58:547:278:32
8:32
#8974
40K
24.85 mi13:31:233:05:477:286:53
8:03
#9017
25.2M
25.20 mi13:34:063:08:307:292:43
7:53
#8926
Finish
26.22 mi13:40:323:14:567:266:26
6:19
#8526
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3751355435544562(Top 16%)4273(Top 27%)4273(Top 190%)
10K6.21 mi3.10 mi3719+323525+293525+293706(Top 13%)3498(Top 22%)3498(Top 156%)
15K9.32 mi3.11 mi3955-2363727-2023727-2024562(Top 16%)4273(Top 27%)4273(Top 190%)
20K12.43 mi3.11 mi4202-2473953-2263953-2265278(Top 19%)4853(Top 30%)4853(Top 216%)
Half13.11 mi0.68 mi4249-473996-433996-435494(Top 19%)5049(Top 31%)5049(Top 225%)
25K15.53 mi2.42 mi4597-3484292-2964292-2966578(Top 23%)5823(Top 36%)5823(Top 259%)
30K18.64 mi3.11 mi6377-17805736-14445736-144413866(Top 49%)9531(Top 59%)9531(Top 424%)
20M20.00 mi1.36 mi6986-6096166-4306166-43016081(Top 57%)10393(Top 65%)10393(Top 463%)
21M21.00 mi1.00 mi7456-4706457-2916457-29116917(Top 60%)10646(Top 66%)10646(Top 474%)
35K21.75 mi0.75 mi7821-3656673-2166673-21617660(Top 62%)10886(Top 68%)10886(Top 484%)
23M23.00 mi1.25 mi8707-8867170-4977170-49719806(Top 70%)11806(Top 73%)11806(Top 525%)
24M24.00 mi1.00 mi8974-2677286-1167286-11614690(Top 52%)9433(Top 59%)9433(Top 420%)
40K24.85 mi0.85 mi9017-437278+87278+810521(Top 37%)7306(Top 45%)7306(Top 325%)
25.2M25.20 mi0.35 mi8926+917204+747204+745315(Top 19%)4336(Top 27%)4336(Top 193%)
Finish26.22 mi1.02 mi8526+4006950+2546950+2541977(Top 7%)1821(Top 11%)1821(Top 81%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4562

Males

4273

M40-44

4273

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3706

Males

3498

M40-44

3498

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4562

Males

4273

M40-44

4273

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5278

Males

4853

M40-44

4853

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5494

Males

5049

M40-44

5049

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6578

Males

5823

M40-44

5823

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13866

Males

9531

M40-44

9531

30K→20M

18.6 - 20.0 mi

Top 57%
×5stories
+64ft-50ft

Overall

16081

Males

10393

M40-44

10393

20M→21M

20.0 - 21.0 mi

Top 60%
×8stories
+106ft-24ft

Overall

16917

Males

10646

M40-44

10646

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

17660

Males

10886

M40-44

10886

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

19806

Males

11806

M40-44

11806

23M→24M

23.0 - 24.0 mi

Top 52%
×6stories
+12ft-82ft

Overall

14690

Males

9433

M40-44

9433

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10521

Males

7306

M40-44

7306

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5315

Males

4336

M40-44

4336

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1977

Males

1821

M40-44

1821

Passing Analysis

Category:
Athletes Passed
925
Passed By
5700
Net Change
-4775
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3751
5K → 10K147115+32#3751#3719
10K → 15K38274-236#3719#3955
15K → 20K40287-247#3955#4202
20K → Half956-47#4202#4249
Half → 25K39387-348#4249#4597
25K → 30K131793-1780#4597#6377
30K → 20M17626-609#6377#6986
20M → 21M13483-470#6986#7456
21M → 35K11376-365#7456#7821
35K → 23M11897-886#7821#8707
23M → 24M22289-267#8707#8974
24M → 40K70113-43#8974#9017
40K → 25.2M954+91#9017#8926
25.2M → Finish4000+400#8926#8526
TOTALS9255700-4775
📊

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