Boston Marathon logo
BOSTON MARATHON 2025

Yip Chung Law

Bib: 6355•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 24%
Division (M18-39)
#0 / 5642
Top 50%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:51
Rank: #3053
Start → 5K
19:51 | 6:23/mi
10K· 6.21 mi
40:13
Rank: #3573 (-520)
5K → 10K
20:22 | 6:33/mi
15K· 9.32 mi
1:00:34
Rank: #3687 (-114)
10K → 15K
20:21 | 6:33/mi
20K· 12.43 mi
1:21:33
Rank: #3899 (-212)
15K → 20K
20:59 | 6:45/mi
Half· 13.11 mi
1:25:59
Rank: #3876 (+23)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:42:33
Rank: #4003 (-127)
Half → 25K
16:34 | 6:50/mi
30K· 18.64 mi
2:04:26
Rank: #4122 (-119)
25K → 30K
21:53 | 7:03/mi
20M
2:14:37
Rank: #4350 (-228)
30K → 20M
10:11 | 7:30/mi
21M
2:22:24
Rank: #4453 (-103)
20M → 21M
7:47 | 7:47/mi
35K· 21.75 mi
2:27:25
Rank: #4390 (+63)
21M → 35K
5:01 | 6:42/mi
23M
2:36:10
Rank: #4303 (+87)
35K → 23M
8:45 | 6:59/mi
24M
2:43:03
Rank: #4256 (+47)
23M → 24M
6:53 | 6:53/mi
40K· 24.85 mi
2:49:08
Rank: #4251 (+5)
24M → 40K
6:05 | 7:07/mi
25.2M
2:51:51
Rank: #4269 (-18)
40K → 25.2M
2:43 | 7:53/mi
Finish· 26.22 mi
2:58:46
Rank: #4274 (-5)
25.2M → Finish
6:55 | 6:47/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:59
Pace6:34 /mi
2nd Half
Distance13.11 mi
Time1:32:47
Pace7:05 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5019:516:2319:51
6:23
-
10K
6.21 mi10:45:1240:136:2820:22
6:33
+0:10
15K
9.32 mi11:05:331:00:346:3020:21
6:33
0:00
20K
12.43 mi11:26:321:21:336:3420:59
6:45
+0:12
Half
13.11 mi11:30:581:25:596:344:26
6:30
-0:15
25K
15.53 mi11:47:321:42:336:3616:34
6:50
+0:20
30K
18.64 mi12:09:252:04:266:4121:53
7:03
+0:13
20M
20.00 mi12:19:362:14:376:4410:11
7:30
+0:27
21M
21.00 mi12:27:232:22:246:477:47
7:47
+0:17
35K
21.75 mi12:32:242:27:256:475:01
6:42
-1:05
23M
23.00 mi12:41:092:36:106:478:45
6:59
+0:17
24M
24.00 mi12:48:022:43:036:486:53
6:53
-0:06
40K
24.85 mi12:54:072:49:086:486:05
7:07
+0:14
25.2M
25.20 mi12:56:502:51:516:492:43
7:53
+0:46
Finish
26.22 mi13:03:452:58:466:496:55
6:47
-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

6:23 /mi

Average Pace

6:49 /mi

Slowest Pace

7:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:05:00

36% of race

Time at Steady Pace

1:27:00

49% of race

Time at Slower Pace

26:46

15% of race

Average Pace: 6:49 /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 mi10:24:5019:516:2319:51
6:23
#3053
10K
6.21 mi10:45:1240:136:2820:22
6:33
#3573
15K
9.32 mi11:05:331:00:346:3020:21
6:33
#3687
20K
12.43 mi11:26:321:21:336:3420:59
6:45
#3899
Half
13.11 mi11:30:581:25:596:344:26
6:30
#3876
25K
15.53 mi11:47:321:42:336:3616:34
6:50
#4003
30K
18.64 mi12:09:252:04:266:4121:53
7:03
#4122
20M
20.00 mi12:19:362:14:376:4410:11
7:30
#4350
21M
21.00 mi12:27:232:22:246:477:47
7:47
#4453
35K
21.75 mi12:32:242:27:256:475:01
6:42
#4390
23M
23.00 mi12:41:092:36:106:478:45
6:59
#4303
24M
24.00 mi12:48:022:43:036:486:53
6:53
#4256
40K
24.85 mi12:54:072:49:086:486:05
7:07
#4251
25.2M
25.20 mi12:56:502:51:516:492:43
7:53
#4269
Finish
26.22 mi13:03:452:58:466:496:55
6:47
#4274
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3053290029003894(Top 14%)3674(Top 23%)3674(Top 65%)
10K6.21 mi3.10 mi3573-5203389-4893389-4894123(Top 15%)3877(Top 24%)3877(Top 69%)
15K9.32 mi3.11 mi3687-1143487-983487-983894(Top 14%)3674(Top 23%)3674(Top 65%)
20K12.43 mi3.11 mi3899-2123673-1863673-1864877(Top 17%)4514(Top 28%)4514(Top 80%)
Half13.11 mi0.68 mi3876+233653+203653+203708(Top 13%)3508(Top 22%)3508(Top 62%)
25K15.53 mi2.42 mi4003-1273766-1133766-1135132(Top 18%)4707(Top 29%)4707(Top 83%)
30K18.64 mi3.11 mi4122-1193863-973863-974963(Top 17%)4508(Top 28%)4508(Top 80%)
20M20.00 mi1.36 mi4350-2284060-1974060-1976950(Top 24%)5803(Top 36%)5803(Top 103%)
21M21.00 mi1.00 mi4453-1034133-734133-736085(Top 21%)5111(Top 32%)5111(Top 91%)
35K21.75 mi0.75 mi4390+634073+604073+603575(Top 13%)3248(Top 20%)3248(Top 58%)
23M23.00 mi1.25 mi4303+873993+803993+803707(Top 13%)3351(Top 21%)3351(Top 59%)
24M24.00 mi1.00 mi4256+473936+573936+573997(Top 14%)3536(Top 22%)3536(Top 63%)
40K24.85 mi0.85 mi4251+53924+123924+124571(Top 16%)3903(Top 24%)3903(Top 69%)
25.2M25.20 mi0.35 mi4269-183935-113935-115280(Top 19%)4301(Top 27%)4301(Top 76%)
Finish26.22 mi1.02 mi4274-53934+13934+14433(Top 16%)3749(Top 23%)3749(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3894

Males

3674

M18-39

3674

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4123

Males

3877

M18-39

3877

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3894

Males

3674

M18-39

3674

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4877

Males

4514

M18-39

4514

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3708

Males

3508

M18-39

3508

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

5132

Males

4707

M18-39

4707

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4963

Males

4508

M18-39

4508

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6950

Males

5803

M18-39

5803

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

6085

Males

5111

M18-39

5111

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3575

Males

3248

M18-39

3248

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3707

Males

3351

M18-39

3351

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3997

Males

3536

M18-39

3536

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4571

Males

3903

M18-39

3903

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5280

Males

4301

M18-39

4301

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4433

Males

3749

M18-39

3749

Passing Analysis

Category:
Athletes Passed
729
Passed By
1950
Net Change
-1221
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3053
5K → 10K13533-520#3053#3573
10K → 15K69183-114#3573#3687
15K → 20K43255-212#3687#3899
20K → Half263+23#3899#3876
Half → 25K43170-127#3876#4003
25K → 30K102221-119#4003#4122
30K → 20M24252-228#4122#4350
20M → 21M40143-103#4350#4453
21M → 35K7613+63#4453#4390
35K → 23M11326+87#4390#4303
23M → 24M7730+47#4303#4256
24M → 40K4641+5#4256#4251
40K → 25.2M1634-18#4251#4269
25.2M → Finish4146-5#4269#4274
TOTALS7291950-1221
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing