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BOSTON MARATHON 2025

Wing Yin Lam

Bib: 22738•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 48%
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:59/mi
24:49
↑ 97↓ 3451.5%
10K· 6.21 mi
8:11/mi
50:13
↑ 79↓ 1380.4%
15K· 9.32 mi
8:22/mi
1:16:14
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:42:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:37/mi
1:48:51
↑ 19↓ 370.5%
25K· 15.53 mi
8:50/mi
2:10:15
↑ 66↓ 880.2%
30K· 18.64 mi
9:14/mi
2:38:57
↑ 181↓ 1480.2%
20M
9:24/mi
2:51:44
↑ 64↓ 500.2%
21M
10:30/mi
3:02:14
↑ 106↓ 241.6%
35K· 21.75 mi
9:27/mi
3:09:18
↑ 17↓ 861.7%
23M
9:30/mi
3:21:12
↑ 23↓ 630.6%
24M
9:02/mi
3:30:14
↓ 821.3%
40K· 24.85 mi
9:46/mi
3:38:35
↓ 200.3%
25.2M
10:29/mi
3:42:12
↑ 13↓ 160.2%
Finish· 26.22 mi
9:00/mi
3:51:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:51
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time2:02:31
Pace9:21 /mi
📊Positive Split: 12.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:1724:497:5924:49
7:59
-
10K
6.21 mi11:46:4150:138:0525:24
8:11
+0:12
15K
9.32 mi12:12:421:16:148:1126:01
8:22
+0:11
20K
12.43 mi12:39:261:42:588:1726:44
8:36
+0:14
Half
13.11 mi12:45:191:48:518:185:53
8:37
+0:01
25K
15.53 mi13:06:432:10:158:2321:24
8:50
+0:13
30K
18.64 mi13:35:252:38:578:3228:42
9:14
+0:24
20M
20.00 mi13:48:122:51:448:3512:47
9:24
+0:10
21M
21.00 mi13:58:423:02:148:4110:30
10:30
+1:06
35K
21.75 mi14:05:463:09:188:427:04
9:27
-1:03
23M
23.00 mi14:17:403:21:128:4511:54
9:30
+0:03
24M
24.00 mi14:26:423:30:148:469:02
9:02
-0:28
40K
24.85 mi14:35:033:38:358:488:21
9:46
+0:44
25.2M
25.20 mi14:38:403:42:128:493:37
10:29
+0:43
Finish
26.22 mi14:47:503:51:228:509:10
9:00
-1:29

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

7:59 /mi

Average Pace

8:50 /mi

Slowest Pace

10:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:51

47% of race

Time at Steady Pace

1:08:18

30% of race

Time at Slower Pace

54:13

23% of race

Average Pace: 8:49 /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 mi11:21:1724:497:5924:49
7:59
#16507
10K
6.21 mi11:46:4150:138:0525:24
8:11
#17141
15K
9.32 mi12:12:421:16:148:1126:01
8:22
#17631
20K
12.43 mi12:39:261:42:588:1726:44
8:36
#17914
Half
13.11 mi12:45:191:48:518:185:53
8:37
#18003
25K
15.53 mi13:06:432:10:158:2321:24
8:50
#18173
30K
18.64 mi13:35:252:38:578:3228:42
9:14
#18303
20M
20.00 mi13:48:122:51:448:3512:47
9:24
#18345
21M
21.00 mi13:58:423:02:148:4110:30
10:30
#18475
35K
21.75 mi14:05:463:09:188:427:04
9:27
#18577
23M
23.00 mi14:17:403:21:128:4511:54
9:30
#18569
24M
24.00 mi14:26:423:30:148:469:02
9:02
#18528
40K
24.85 mi14:35:033:38:358:488:21
9:46
#18583
25.2M
25.20 mi14:38:403:42:128:493:37
10:29
#18594
Finish
26.22 mi14:47:503:51:228:509:10
9:00
#18615
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi165075458545818551(Top 65%)6634(Top 54%)6634(Top 366%)
10K6.21 mi3.10 mi17141-6345813-3555813-35517734(Top 62%)6142(Top 50%)6142(Top 339%)
15K9.32 mi3.11 mi17631-4906101-2886101-28818551(Top 65%)6634(Top 54%)6634(Top 366%)
20K12.43 mi3.11 mi17914-2836286-1856286-18518892(Top 67%)6850(Top 56%)6850(Top 378%)
Half13.11 mi0.68 mi18003-896340-546340-5419948(Top 70%)7436(Top 61%)7436(Top 410%)
25K15.53 mi2.42 mi18173-1706460-1206460-12019068(Top 67%)7009(Top 57%)7009(Top 387%)
30K18.64 mi3.11 mi18303-1306561-1016561-10118831(Top 66%)7026(Top 57%)7026(Top 388%)
20M20.00 mi1.36 mi18345-426608-476608-4718785(Top 66%)7152(Top 58%)7152(Top 394%)
21M21.00 mi1.00 mi18475-1306708-1006708-10020024(Top 70%)7921(Top 65%)7921(Top 437%)
35K21.75 mi0.75 mi18577-1026779-716779-7120154(Top 71%)8057(Top 66%)8057(Top 444%)
23M23.00 mi1.25 mi18569+86806-276806-2718731(Top 66%)7366(Top 60%)7366(Top 406%)
24M24.00 mi1.00 mi18528+416813-76813-717558(Top 62%)6794(Top 56%)6794(Top 375%)
40K24.85 mi0.85 mi18583-556867-546867-5419704(Top 69%)7990(Top 65%)7990(Top 441%)
25.2M25.20 mi0.35 mi18594-116886-196886-1918981(Top 67%)7620(Top 62%)7620(Top 420%)
Finish26.22 mi1.02 mi18615-216910-246910-2419038(Top 67%)7617(Top 62%)7617(Top 420%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18551

Females

6634

F45-49

6634

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

17734

Females

6142

F45-49

6142

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18551

Females

6634

F45-49

6634

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

18892

Females

6850

F45-49

6850

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

19948

Females

7436

F45-49

7436

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

19068

Females

7009

F45-49

7009

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18831

Females

7026

F45-49

7026

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

18785

Females

7152

F45-49

7152

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

20024

Females

7921

F45-49

7921

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

20154

Females

8057

F45-49

8057

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

18731

Females

7366

F45-49

7366

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

17558

Females

6794

F45-49

6794

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19704

Females

7990

F45-49

7990

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

18981

Females

7620

F45-49

7620

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

19038

Females

7617

F45-49

7617

Passing Analysis

Category:
Athletes Passed
1170
Passed By
3278
Net Change
-2108
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16507
5K → 10K112746-634#16507#17141
10K → 15K76566-490#17141#17631
15K → 20K105388-283#17631#17914
20K → Half19108-89#17914#18003
Half → 25K117287-170#18003#18173
25K → 30K194324-130#18173#18303
30K → 20M105147-42#18303#18345
20M → 21M69199-130#18345#18475
21M → 35K29131-102#18475#18577
35K → 23M111103+8#18577#18569
23M → 24M9150+41#18569#18528
24M → 40K59114-55#18528#18583
40K → 25.2M2536-11#18583#18594
25.2M → Finish5879-21#18594#18615
TOTALS11703278-2108
📊

Passing Visuals

Category:
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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