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BOSTON MARATHON 2025

Mei Tzuo Lin

Bib: 18842•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
9:31/mi
29:35
↑ 97↓ 3451.5%
10K· 6.21 mi
11:30/mi
1:05:20
↑ 79↓ 1380.4%
15K· 9.32 mi
12:05/mi
1:42:54
↑ 67↓ 78
20K· 12.43 mi
13:14/mi
2:24:01
↑ 106↓ 860.1%
Half· 13.11 mi
10:16/mi
2:31:01
↑ 19↓ 370.5%
25K· 15.53 mi
11:26/mi
2:58:45
↑ 66↓ 880.2%
30K· 18.64 mi
11:34/mi
3:34:41
↑ 181↓ 1480.2%
20M
12:43/mi
3:51:58
↑ 64↓ 500.2%
21M
15:21/mi
4:07:19
↑ 106↓ 241.6%
35K· 21.75 mi
12:43/mi
4:16:50
↑ 17↓ 861.7%
23M
11:41/mi
4:31:28
↑ 23↓ 630.6%
24M
11:50/mi
4:43:18
↓ 821.3%
40K· 24.85 mi
11:09/mi
4:52:50
↓ 200.3%
25.2M
12:37/mi
4:57:11
↑ 13↓ 160.2%
Finish· 26.22 mi
10:45/mi
5:08:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:31:01
Pace11:31 /mi
2nd Half
Distance13.11 mi
Time2:37:07
Pace11:59 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4129:359:3129:35
9:31
-
10K
6.21 mi11:56:261:05:2010:3135:45
11:30
+1:59
15K
9.32 mi12:34:001:42:5411:0237:34
12:05
+0:35
20K
12.43 mi13:15:072:24:0111:3541:07
13:14
+1:09
Half
13.11 mi13:22:072:31:0111:317:00
10:16
-2:58
25K
15.53 mi13:49:512:58:4511:3027:44
11:26
+1:10
30K
18.64 mi14:25:473:34:4111:3135:56
11:34
+0:08
20M
20.00 mi14:43:043:51:5811:3617:17
12:43
+1:09
21M
21.00 mi14:58:254:07:1911:4715:21
15:21
+2:38
35K
21.75 mi15:07:564:16:5011:499:31
12:43
-2:38
23M
23.00 mi15:22:344:31:2811:4814:38
11:41
-1:02
24M
24.00 mi15:34:244:43:1811:4811:50
11:50
+0:09
40K
24.85 mi15:43:564:52:5011:479:32
11:09
-0:41
25.2M
25.20 mi15:48:174:57:1111:484:21
12:37
+1:28
Finish
26.22 mi15:59:145:08:0811:4610:57
10:45
-1:52

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

9:31 /mi

Average Pace

11:46 /mi

Slowest Pace

15:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

47:32

15% of race

Time at Steady Pace

2:52:59

56% of race

Time at Slower Pace

1:27:37

28% of race

Average Pace: 11:45 /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 mi11:20:4129:359:3129:35
9:31
#24303
10K
6.21 mi11:56:261:05:2010:3135:45
11:30
#26509
15K
9.32 mi12:34:001:42:5411:0237:34
12:05
#27125
20K
12.43 mi13:15:072:24:0111:3541:07
13:14
#27464
Half
13.11 mi13:22:072:31:0111:317:00
10:16
#27380
25K
15.53 mi13:49:512:58:4511:3027:44
11:26
#27121
30K
18.64 mi14:25:473:34:4111:3135:56
11:34
#26799
20M
20.00 mi14:43:043:51:5811:3617:17
12:43
#26768
21M
21.00 mi14:58:254:07:1911:4715:21
15:21
#26838
35K
21.75 mi15:07:564:16:5011:499:31
12:43
#26840
23M
23.00 mi15:22:344:31:2811:4814:38
11:41
#26735
24M
24.00 mi15:34:244:43:1811:4811:50
11:50
#26693
40K
24.85 mi15:43:564:52:5011:479:32
11:09
#26616
25.2M
25.20 mi15:48:174:57:1111:484:21
12:37
#26592
Finish
26.22 mi15:59:145:08:0811:4610:57
10:45
#26555
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi243039853985327678(Top 97%)11793(Top 96%)11793(Top 216%)
10K6.21 mi3.10 mi26509-220611058-120511058-120527604(Top 97%)11726(Top 96%)11726(Top 214%)
15K9.32 mi3.11 mi27125-61611428-37011428-37027678(Top 97%)11793(Top 96%)11793(Top 216%)
20K12.43 mi3.11 mi27464-33911639-21111639-21127944(Top 98%)11962(Top 98%)11962(Top 219%)
Half13.11 mi0.68 mi27380+8411590+4911590+4925358(Top 89%)10474(Top 86%)10474(Top 192%)
25K15.53 mi2.42 mi27121+25911453+13711453+13725782(Top 91%)10740(Top 88%)10740(Top 196%)
30K18.64 mi3.11 mi26799+32211285+16811285+16824943(Top 88%)10377(Top 85%)10377(Top 190%)
20M20.00 mi1.36 mi26768+3111272+1311272+1326161(Top 92%)11098(Top 91%)11098(Top 203%)
21M21.00 mi1.00 mi26838-7011322-5011322-5027408(Top 96%)11776(Top 96%)11776(Top 215%)
35K21.75 mi0.75 mi26840-211328-611328-626692(Top 94%)11440(Top 94%)11440(Top 209%)
23M23.00 mi1.25 mi26735+10511277+5111277+5124573(Top 87%)10382(Top 85%)10382(Top 190%)
24M24.00 mi1.00 mi26693+4211266+1111266+1125449(Top 90%)10856(Top 89%)10856(Top 199%)
40K24.85 mi0.85 mi26616+7711228+3811228+3823442(Top 83%)9921(Top 81%)9921(Top 181%)
25.2M25.20 mi0.35 mi26592+2411215+1311215+1324380(Top 86%)10375(Top 85%)10375(Top 190%)
Finish26.22 mi1.02 mi26555+3711197+1811197+1824815(Top 87%)10575(Top 86%)10575(Top 193%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

27678

Females

11793

F18-39

11793

5K→10K

3.1 - 6.2 mi

Top 97%
×5story building
+79ft-138ft

Overall

27604

Females

11726

F18-39

11726

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

27678

Females

11793

F18-39

11793

15K→20K

9.3 - 12.4 mi

Top 98%
×5story building
+106ft-86ft

Overall

27944

Females

11962

F18-39

11962

20K→Half

12.4 - 13.1 mi

Top 89%
×2story building
+19ft-37ft

Overall

25358

Females

10474

F18-39

10474

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

25782

Females

10740

F18-39

10740

25K→30K

15.5 - 18.6 mi

Top 88%
×9story building
+181ft-148ft

Overall

24943

Females

10377

F18-39

10377

30K→20M

18.6 - 20.0 mi

Top 92%
×5story building
+64ft-50ft

Overall

26161

Females

11098

F18-39

11098

20M→21M

20.0 - 21.0 mi

Top 96%
×8story building
+106ft-24ft

Overall

27408

Females

11776

F18-39

11776

21M→35K

21.0 - 21.8 mi

Top 94%
×7story building
+17ft-86ft

Overall

26692

Females

11440

F18-39

11440

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

24573

Females

10382

F18-39

10382

23M→24M

23.0 - 24.0 mi

Top 90%
×6story building
+12ft-82ft

Overall

25449

Females

10856

F18-39

10856

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

23442

Females

9921

F18-39

9921

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

24380

Females

10375

F18-39

10375

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

24815

Females

10575

F18-39

10575

Passing Analysis

Category:
Athletes Passed
1086
Passed By
3338
Net Change
-2252
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24303
5K → 10K52211-2206#24303#26509
10K → 15K11627-616#26509#27125
15K → 20K13352-339#27125#27464
20K → Half840+84#27464#27380
Half → 25K2634+259#27380#27121
25K → 30K3264+322#27121#26799
30K → 20M5120+31#26799#26768
20M → 21M1282-70#26768#26838
21M → 35K2022-2#26838#26840
35K → 23M1083+105#26840#26735
23M → 24M497+42#26735#26693
24M → 40K770+77#26693#26616
40K → 25.2M251+24#26616#26592
25.2M → Finish425+37#26592#26555
TOTALS10863338-2252
📊

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