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BOSTON MARATHON 2025

Hsiao Chi Lin

Bib: 23396•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:54
Rank: #20811
Start → 5K
26:54 | 8:39/mi
10K· 6.21 mi
54:34
Rank: #21364 (-553)
5K → 10K
27:40 | 8:54/mi
15K· 9.32 mi
1:24:41
Rank: #22643 (-1279)
10K → 15K
30:07 | 9:42/mi
20K· 12.43 mi
1:56:54
Rank: #23493 (-850)
15K → 20K
32:13 | 10:22/mi
Half· 13.11 mi
2:03:40
Rank: #23569 (-76)
20K → Half
6:46 | 9:55/mi
25K· 15.53 mi
2:29:49
Rank: #23820 (-251)
Half → 25K
26:09 | 10:47/mi
30K· 18.64 mi
3:06:32
Rank: #24250 (-430)
25K → 30K
36:43 | 11:49/mi
20M
3:22:14
Rank: #24285 (-35)
30K → 20M
15:42 | 11:33/mi
21M
3:35:39
Rank: #24390 (-105)
20M → 21M
13:25 | 13:25/mi
35K· 21.75 mi
3:43:49
Rank: #24387 (+3)
21M → 35K
8:10 | 10:55/mi
23M
3:57:05
Rank: #24270 (+117)
35K → 23M
13:16 | 10:36/mi
24M
4:06:38
Rank: #24116 (+154)
23M → 24M
9:33 | 9:33/mi
40K· 24.85 mi
4:17:07
Rank: #24197 (-81)
24M → 40K
10:29 | 12:16/mi
25.2M
4:20:36
Rank: #24119 (+78)
40K → 25.2M
3:29 | 10:06/mi
Finish· 26.22 mi
4:30:17
Rank: #24048 (+71)
25.2M → Finish
9:41 | 9:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:40
Pace9:26 /mi
2nd Half
Distance13.11 mi
Time2:26:37
Pace11:11 /mi
📊Positive Split: 18.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:1426:548:3926:54
8:39
-
10K
6.21 mi11:52:5454:348:4727:40
8:54
+0:15
15K
9.32 mi12:23:011:24:419:0530:07
9:42
+0:48
20K
12.43 mi12:55:141:56:549:2432:13
10:22
+0:40
Half
13.11 mi13:02:002:03:409:266:46
9:55
-0:27
25K
15.53 mi13:28:092:29:499:3926:09
10:47
+0:52
30K
18.64 mi14:04:523:06:3210:0036:43
11:49
+1:02
20M
20.00 mi14:20:343:22:1410:0715:42
11:33
-0:16
21M
21.00 mi14:33:593:35:3910:1613:25
13:25
+1:52
35K
21.75 mi14:42:093:43:4910:178:10
10:55
-2:30
23M
23.00 mi14:55:253:57:0510:1813:16
10:36
-0:19
24M
24.00 mi15:04:584:06:3810:179:33
9:33
-1:03
40K
24.85 mi15:15:274:17:0710:2110:29
12:16
+2:43
25.2M
25.20 mi15:18:564:20:3610:203:29
10:06
-2:10
Finish
26.22 mi15:28:374:30:1710:199:41
9:30
-0:36

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

8:39 /mi

Average Pace

10:19 /mi

Slowest Pace

13:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:55

38% of race

Time at Steady Pace

1:30:03

33% of race

Time at Slower Pace

1:16:19

28% of race

Average Pace: 10:18 /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 mi11:25:1426:548:3926:54
8:39
#20811
10K
6.21 mi11:52:5454:348:4727:40
8:54
#21364
15K
9.32 mi12:23:011:24:419:0530:07
9:42
#22643
20K
12.43 mi12:55:141:56:549:2432:13
10:22
#23493
Half
13.11 mi13:02:002:03:409:266:46
9:55
#23569
25K
15.53 mi13:28:092:29:499:3926:09
10:47
#23820
30K
18.64 mi14:04:523:06:3210:0036:43
11:49
#24250
20M
20.00 mi14:20:343:22:1410:0715:42
11:33
#24285
21M
21.00 mi14:33:593:35:3910:1613:25
13:25
#24390
35K
21.75 mi14:42:093:43:4910:178:10
10:55
#24387
23M
23.00 mi14:55:253:57:0510:1813:16
10:36
#24270
24M
24.00 mi15:04:584:06:3810:179:33
9:33
#24116
40K
24.85 mi15:15:274:17:0710:2110:29
12:16
#24197
25.2M
25.20 mi15:18:564:20:3610:203:29
10:06
#24119
Finish
26.22 mi15:28:374:30:1710:199:41
9:30
#24048
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi208117980798024265(Top 85%)9818(Top 80%)9818(Top 753%)
10K6.21 mi3.10 mi21364-5538255-2758255-27521967(Top 77%)8580(Top 70%)8580(Top 658%)
15K9.32 mi3.11 mi22643-12798934-6798934-67924265(Top 85%)9818(Top 80%)9818(Top 753%)
20K12.43 mi3.11 mi23493-8509400-4669400-46624968(Top 88%)10239(Top 84%)10239(Top 786%)
Half13.11 mi0.68 mi23569-769444-449444-4424672(Top 87%)10094(Top 83%)10094(Top 775%)
25K15.53 mi2.42 mi23820-2519598-1549598-15424884(Top 88%)10222(Top 84%)10222(Top 784%)
30K18.64 mi3.11 mi24250-4309867-2699867-26925347(Top 89%)10584(Top 87%)10584(Top 812%)
20M20.00 mi1.36 mi24285-359903-369903-3624642(Top 87%)10289(Top 84%)10289(Top 790%)
21M21.00 mi1.00 mi24390-1059975-729975-7225576(Top 90%)10846(Top 89%)10846(Top 832%)
35K21.75 mi0.75 mi24387+39983-89983-824038(Top 85%)10078(Top 82%)10078(Top 773%)
23M23.00 mi1.25 mi24270+1179936+479936+4722274(Top 78%)9216(Top 75%)9216(Top 707%)
24M24.00 mi1.00 mi24116+1549879+579879+5719834(Top 70%)8009(Top 65%)8009(Top 615%)
40K24.85 mi0.85 mi24197-819925-469925-4625339(Top 89%)10835(Top 89%)10835(Top 832%)
25.2M25.20 mi0.35 mi24119+789897+289897+2817576(Top 62%)6930(Top 57%)6930(Top 532%)
Finish26.22 mi1.02 mi24048+719866+319866+3121217(Top 75%)8773(Top 72%)8773(Top 673%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

24265

Females

9818

F50-54

9818

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

21967

Females

8580

F50-54

8580

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

24265

Females

9818

F50-54

9818

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

24968

Females

10239

F50-54

10239

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

24672

Females

10094

F50-54

10094

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

24884

Females

10222

F50-54

10222

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

25347

Females

10584

F50-54

10584

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

24642

Females

10289

F50-54

10289

20M→21M

20.0 - 21.0 mi

Top 90%
×8stories
+106ft-24ft

Overall

25576

Females

10846

F50-54

10846

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

24038

Females

10078

F50-54

10078

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

22274

Females

9216

F50-54

9216

23M→24M

23.0 - 24.0 mi

Top 70%
×6stories
+12ft-82ft

Overall

19834

Females

8009

F50-54

8009

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

25339

Females

10835

F50-54

10835

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17576

Females

6930

F50-54

6930

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

21217

Females

8773

F50-54

8773

Passing Analysis

Category:
Athletes Passed
840
Passed By
4077
Net Change
-3237
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20811
5K → 10K94647-553#20811#21364
10K → 15K251304-1279#21364#22643
15K → 20K28878-850#22643#23493
20K → Half783-76#23493#23569
Half → 25K52303-251#23569#23820
25K → 30K44474-430#23820#24250
30K → 20M5792-35#24250#24285
20M → 21M32137-105#24285#24390
21M → 35K4138+3#24390#24387
35K → 23M12912+117#24387#24270
23M → 24M1562+154#24270#24116
24M → 40K19100-81#24116#24197
40K → 25.2M780+78#24197#24119
25.2M → Finish787+71#24119#24048
TOTALS8404077-3237
📊

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