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BOSTON MARATHON 2025

Hiu Tung Mak

Bib: 13889•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 33%
Gender (Female)
#0 / 12228
Top 16%
Division (F18-39)
#0 / 5469
Top 28%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:19
Rank: #9334
Start → 5K
22:19 | 7:11/mi
10K· 6.21 mi
44:55
Rank: #9715 (-381)
5K → 10K
22:36 | 7:16/mi
15K· 9.32 mi
1:07:42
Rank: #9892 (-177)
10K → 15K
22:47 | 7:20/mi
20K· 12.43 mi
1:30:56
Rank: #10022 (-130)
15K → 20K
23:14 | 7:29/mi
Half· 13.11 mi
1:35:59
Rank: #10067 (-45)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:54:05
Rank: #9949 (+118)
Half → 25K
18:06 | 7:28/mi
30K· 18.64 mi
2:18:16
Rank: #9852 (+97)
25K → 30K
24:11 | 7:47/mi
20M
2:28:56
Rank: #9767 (+85)
30K → 20M
10:40 | 7:51/mi
21M
2:37:21
Rank: #9741 (+26)
20M → 21M
8:25 | 8:25/mi
35K· 21.75 mi
2:42:58
Rank: #9686 (+55)
21M → 35K
5:37 | 7:30/mi
23M
2:52:44
Rank: #9588 (+98)
35K → 23M
9:46 | 7:48/mi
24M
3:00:23
Rank: #9510 (+78)
23M → 24M
7:39 | 7:39/mi
40K· 24.85 mi
3:06:57
Rank: #9430 (+80)
24M → 40K
6:34 | 7:41/mi
25.2M
3:09:53
Rank: #9395 (+35)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:17:35
Rank: #9392 (+3)
25.2M → Finish
7:42 | 7:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:59
Pace7:19 /mi
2nd Half
Distance13.11 mi
Time1:41:36
Pace7:45 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0122:197:1122:19
7:11
-
10K
6.21 mi11:13:3744:557:1422:36
7:16
+0:05
15K
9.32 mi11:36:241:07:427:1622:47
7:20
+0:04
20K
12.43 mi11:59:381:30:567:1923:14
7:29
+0:09
Half
13.11 mi12:04:411:35:597:195:03
7:24
-0:05
25K
15.53 mi12:22:471:54:057:2118:06
7:28
+0:04
30K
18.64 mi12:46:582:18:167:2524:11
7:47
+0:19
20M
20.00 mi12:57:382:28:567:2710:40
7:51
+0:04
21M
21.00 mi13:06:032:37:217:308:25
8:25
+0:34
35K
21.75 mi13:11:402:42:587:305:37
7:30
-0:55
23M
23.00 mi13:21:262:52:447:319:46
7:48
+0:18
24M
24.00 mi13:29:053:00:237:317:39
7:39
-0:09
40K
24.85 mi13:35:393:06:577:316:34
7:41
+0:02
25.2M
25.20 mi13:38:353:09:537:322:56
8:30
+0:49
Finish
26.22 mi13:46:173:17:357:327:42
7:33
-0:57

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

7:11 /mi

Average Pace

7:32 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:14

94% of race

Time at Steady Pace

8:25

4% of race

Time at Slower Pace

2:56

1% of race

Average Pace: 7:32 /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 mi10:51:0122:197:1122:19
7:11
#9334
10K
6.21 mi11:13:3744:557:1422:36
7:16
#9715
15K
9.32 mi11:36:241:07:427:1622:47
7:20
#9892
20K
12.43 mi11:59:381:30:567:1923:14
7:29
#10022
Half
13.11 mi12:04:411:35:597:195:03
7:24
#10067
25K
15.53 mi12:22:471:54:057:2118:06
7:28
#9949
30K
18.64 mi12:46:582:18:167:2524:11
7:47
#9852
20M
20.00 mi12:57:382:28:567:2710:40
7:51
#9767
21M
21.00 mi13:06:032:37:217:308:25
8:25
#9741
35K
21.75 mi13:11:402:42:587:305:37
7:30
#9686
23M
23.00 mi13:21:262:52:447:319:46
7:48
#9588
24M
24.00 mi13:29:053:00:237:317:39
7:39
#9510
40K
24.85 mi13:35:393:06:577:316:34
7:41
#9430
25.2M
25.20 mi13:38:353:09:537:322:56
8:30
#9395
Finish
26.22 mi13:46:173:17:357:327:42
7:33
#9392
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi93341523152310276(Top 36%)2009(Top 16%)2009(Top 37%)
10K6.21 mi3.10 mi9715-3811677-1541677-15410154(Top 36%)1891(Top 15%)1891(Top 35%)
15K9.32 mi3.11 mi9892-1771791-1141791-11410276(Top 36%)2009(Top 16%)2009(Top 37%)
20K12.43 mi3.11 mi10022-1301879-881879-8810578(Top 37%)2246(Top 18%)2246(Top 41%)
Half13.11 mi0.68 mi10067-451904-251904-2510927(Top 38%)2369(Top 19%)2369(Top 43%)
25K15.53 mi2.42 mi9949+1181877+271877+279694(Top 34%)1971(Top 16%)1971(Top 36%)
30K18.64 mi3.11 mi9852+971893-161893-169819(Top 35%)2200(Top 18%)2200(Top 40%)
20M20.00 mi1.36 mi9767+851888+51888+59382(Top 33%)2161(Top 18%)2161(Top 40%)
21M21.00 mi1.00 mi9741+261900-121900-129964(Top 35%)2587(Top 21%)2587(Top 47%)
35K21.75 mi0.75 mi9686+551898+21898+28713(Top 31%)1992(Top 16%)1992(Top 36%)
23M23.00 mi1.25 mi9588+981899-11899-18608(Top 30%)2086(Top 17%)2086(Top 38%)
24M24.00 mi1.00 mi9510+781905-61905-68800(Top 31%)2226(Top 18%)2226(Top 41%)
40K24.85 mi0.85 mi9430+801901+41901+47992(Top 28%)1984(Top 16%)1984(Top 36%)
25.2M25.20 mi0.35 mi9395+351904-31904-38866(Top 31%)2450(Top 20%)2450(Top 45%)
Finish26.22 mi1.02 mi9392+31944-401944-409616(Top 34%)2810(Top 23%)2810(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

10276

Females

2009

F18-39

2009

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

10154

Females

1891

F18-39

1891

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

10276

Females

2009

F18-39

2009

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

10578

Females

2246

F18-39

2246

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10927

Females

2369

F18-39

2369

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9694

Females

1971

F18-39

1971

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9819

Females

2200

F18-39

2200

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

9382

Females

2161

F18-39

2161

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

9964

Females

2587

F18-39

2587

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8713

Females

1992

F18-39

1992

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

8608

Females

2086

F18-39

2086

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8800

Females

2226

F18-39

2226

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7992

Females

1984

F18-39

1984

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8866

Females

2450

F18-39

2450

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

9616

Females

2810

F18-39

2810

Passing Analysis

Category:
Athletes Passed
1710*
Passed By
1763
Net Change
-58
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9334
5K → 10K106486-381#9334#9715
10K → 15K113289-177#9715#9892
15K → 20K143271-130#9892#10022
20K → Half1863-45#10022#10067
Half → 25K202*84+118#10067#9949
25K → 30K275178+97#9949#9852
30K → 20M15266+85#9852#9767
20M → 21M9771+26#9767#9741
21M → 35K8833+55#9741#9686
35K → 23M15355+98#9686#9588
23M → 24M12547+78#9588#9510
24M → 40K10525+80#9510#9430
40K → 25.2M5823+35#9430#9395
25.2M → Finish7572+3#9395#9392
TOTALS1710*1763-58

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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