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BOSTON MARATHON 2025

Hoi Yee Lam

Bib: 11529•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 27%
Gender (Female)
#0 / 12228
Top 10%
Division (F18-39)
#0 / 5469
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:26
Rank: #9645
Start → 5K
22:26 | 7:13/mi
10K· 6.21 mi
44:30
Rank: #9133 (+512)
5K → 10K
22:04 | 7:06/mi
15K· 9.32 mi
1:06:51
Rank: #9090 (+43)
10K → 15K
22:21 | 7:12/mi
20K· 12.43 mi
1:29:42
Rank: #9146 (-56)
15K → 20K
22:51 | 7:21/mi
Half· 13.11 mi
1:34:42
Rank: #9206 (-60)
20K → Half
5:00 | 7:20/mi
25K· 15.53 mi
1:52:15
Rank: #8920 (+286)
Half → 25K
17:33 | 7:14/mi
30K· 18.64 mi
2:15:57
Rank: #8777 (+143)
25K → 30K
23:42 | 7:38/mi
20M
2:26:07
Rank: #8574 (+203)
30K → 20M
10:10 | 7:29/mi
21M
2:34:02
Rank: #8423 (+151)
20M → 21M
7:55 | 7:55/mi
35K· 21.75 mi
2:39:23
Rank: #8290 (+133)
21M → 35K
5:21 | 7:09/mi
23M
2:48:42
Rank: #8103 (+187)
35K → 23M
9:19 | 7:26/mi
24M
2:55:58
Rank: #7967 (+136)
23M → 24M
7:16 | 7:16/mi
40K· 24.85 mi
3:02:13
Rank: #7825 (+142)
24M → 40K
6:15 | 7:19/mi
25.2M
3:04:55
Rank: #7746 (+79)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
3:12:00
Rank: #7610 (+136)
25.2M → Finish
7:05 | 6:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:42
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:37:18
Pace7:25 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5722:267:1322:26
7:13
-
10K
6.21 mi11:11:0144:307:1022:04
7:06
-0:07
15K
9.32 mi11:33:221:06:517:1022:21
7:12
+0:06
20K
12.43 mi11:56:131:29:427:1322:51
7:21
+0:09
Half
13.11 mi12:01:131:34:427:135:00
7:20
-0:01
25K
15.53 mi12:18:461:52:157:1417:33
7:14
-0:06
30K
18.64 mi12:42:282:15:577:1823:42
7:38
+0:24
20M
20.00 mi12:52:382:26:077:1810:10
7:29
-0:09
21M
21.00 mi13:00:332:34:027:207:55
7:55
+0:26
35K
21.75 mi13:05:542:39:237:205:21
7:09
-0:46
23M
23.00 mi13:15:132:48:427:209:19
7:26
+0:17
24M
24.00 mi13:22:292:55:587:207:16
7:16
-0:10
40K
24.85 mi13:28:443:02:137:206:15
7:19
+0:03
25.2M
25.20 mi13:31:263:04:557:202:42
7:50
+0:31
Finish
26.22 mi13:38:313:12:007:207:05
6:57
-0:53

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

6:57 /mi

Average Pace

7:20 /mi

Slowest Pace

7:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:23

94% of race

Time at Steady Pace

10:37

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:19 /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 mi10:48:5722:267:1322:26
7:13
#9645
10K
6.21 mi11:11:0144:307:1022:04
7:06
#9133
15K
9.32 mi11:33:221:06:517:1022:21
7:12
#9090
20K
12.43 mi11:56:131:29:427:1322:51
7:21
#9146
Half
13.11 mi12:01:131:34:427:135:00
7:20
#9206
25K
15.53 mi12:18:461:52:157:1417:33
7:14
#8920
30K
18.64 mi12:42:282:15:577:1823:42
7:38
#8777
20M
20.00 mi12:52:382:26:077:1810:10
7:29
#8574
21M
21.00 mi13:00:332:34:027:207:55
7:55
#8423
35K
21.75 mi13:05:542:39:237:205:21
7:09
#8290
23M
23.00 mi13:15:132:48:427:209:19
7:26
#8103
24M
24.00 mi13:22:292:55:587:207:16
7:16
#7967
40K
24.85 mi13:28:443:02:137:206:15
7:19
#7825
25.2M
25.20 mi13:31:263:04:557:202:42
7:50
#7746
Finish
26.22 mi13:38:313:12:007:207:05
6:57
#7610
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9645164416449076(Top 32%)1457(Top 12%)1457(Top 27%)
10K6.21 mi3.10 mi9133+5121432+2121432+2128710(Top 31%)1267(Top 10%)1267(Top 23%)
15K9.32 mi3.11 mi9090+43143214329076(Top 32%)1457(Top 12%)1457(Top 27%)
20K12.43 mi3.11 mi9146-561476-441476-449508(Top 33%)1735(Top 14%)1735(Top 32%)
Half13.11 mi0.68 mi9206-601510-341510-3410278(Top 36%)2058(Top 17%)2058(Top 38%)
25K15.53 mi2.42 mi8920+2861409+1011409+1017916(Top 28%)1184(Top 10%)1184(Top 22%)
30K18.64 mi3.11 mi8777+1431406+31406+38666(Top 31%)1676(Top 14%)1676(Top 31%)
20M20.00 mi1.36 mi8574+2031368+381368+386902(Top 24%)1113(Top 9%)1113(Top 20%)
21M21.00 mi1.00 mi8423+1511339+291339+296907(Top 24%)1265(Top 10%)1265(Top 23%)
35K21.75 mi0.75 mi8290+1331303+361303+366341(Top 22%)1049(Top 9%)1049(Top 19%)
23M23.00 mi1.25 mi8103+1871284+191284+196321(Top 22%)1139(Top 9%)1139(Top 21%)
24M24.00 mi1.00 mi7967+1361266+181266+186249(Top 22%)1164(Top 10%)1164(Top 21%)
40K24.85 mi0.85 mi7825+1421243+231243+235732(Top 20%)1029(Top 8%)1029(Top 19%)
25.2M25.20 mi0.35 mi7746+791233+101233+105122(Top 18%)920(Top 8%)920(Top 17%)
Finish26.22 mi1.02 mi7610+1361213+201213+205447(Top 19%)1039(Top 8%)1039(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

9076

Females

1457

F18-39

1457

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8710

Females

1267

F18-39

1267

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

9076

Females

1457

F18-39

1457

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9508

Females

1735

F18-39

1735

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

10278

Females

2058

F18-39

2058

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

7916

Females

1184

F18-39

1184

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8666

Females

1676

F18-39

1676

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6902

Females

1113

F18-39

1113

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6907

Females

1265

F18-39

1265

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

6341

Females

1049

F18-39

1049

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

6321

Females

1139

F18-39

1139

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

6249

Females

1164

F18-39

1164

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5732

Females

1029

F18-39

1029

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

5122

Females

920

F18-39

920

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

5447

Females

1039

F18-39

1039

Passing Analysis

Category:
Athletes Passed
2778
Passed By
743
Net Change
+2035
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9645
5K → 10K56553+512#9645#9133
10K → 15K185142+43#9133#9090
15K → 20K146202-56#9090#9146
20K → Half1676-60#9146#9206
Half → 25K30923+286#9206#8920
25K → 30K285142+143#8920#8777
30K → 20M21512+203#8777#8574
20M → 21M17726+151#8574#8423
21M → 35K1363+133#8423#8290
35K → 23M21124+187#8290#8103
23M → 24M14610+136#8103#7967
24M → 40K15311+142#7967#7825
40K → 25.2M834+79#7825#7746
25.2M → Finish15115+136#7746#7610
TOTALS2778743+2035
📊

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