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BOSTON MARATHON 2025

Chiehyueh Lin

Bib: 14207•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 39%
Gender (Female)
#0 / 12228
Top 23%
Division (F18-39)
#0 / 5469
Top 40%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:49
Rank: #13667
Start → 5K
7:40/mi
23:49 split
10K· 6.21 mi
47:23
Rank: #13272 (+395)
5K → 10K
7:35/mi
23:34 split
15K· 9.32 mi
1:10:43
Rank: #12751 (+521)
10K → 15K
7:31/mi
23:20 split
20K· 12.43 mi
1:34:13
Rank: #12327 (+424)
15K → 20K
7:34/mi
23:30 split
Half· 13.11 mi
1:39:20
Rank: #12311 (+16)
20K → Half
7:30/mi
5:07 split
25K· 15.53 mi
1:57:39
Rank: #11952 (+359)
Half → 25K
7:33/mi
18:19 split
30K· 18.64 mi
2:21:42
Rank: #11446 (+506)
25K → 30K
7:44/mi
24:03 split
20M
2:32:20
Rank: #11232 (+214)
30K → 20M
7:49/mi
10:38 split
21M
2:40:42
Rank: #11094 (+138)
20M → 21M
8:22/mi
8:22 split
35K· 21.75 mi
2:46:26
Rank: #11014 (+80)
21M → 35K
7:40/mi
5:44 split
23M
2:56:40
Rank: #10995 (+19)
35K → 23M
8:10/mi
10:14 split
24M
3:04:54
Rank: #11030 (-35)
23M → 24M
8:14/mi
8:14 split
40K· 24.85 mi
3:12:04
Rank: #11083 (-53)
24M → 40K
8:23/mi
7:10 split
25.2M
3:15:14
Rank: #11103 (-20)
40K → 25.2M
9:11/mi
3:10 split
Finish· 26.22 mi
3:23:28
Rank: #11169 (-66)
25.2M → Finish
8:05/mi
8:14 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:20
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:44:08
Pace7:57 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:2523:497:4023:49
7:40
-
10K
6.21 mi11:17:5947:237:3823:34
7:35
-0:05
15K
9.32 mi11:41:191:10:437:3523:20
7:31
-0:04
20K
12.43 mi12:04:491:34:137:3523:30
7:34
+0:03
Half
13.11 mi12:09:561:39:207:355:07
7:30
-0:04
25K
15.53 mi12:28:151:57:397:3418:19
7:33
+0:03
30K
18.64 mi12:52:182:21:427:3624:03
7:44
+0:11
20M
20.00 mi13:02:562:32:207:3710:38
7:49
+0:05
21M
21.00 mi13:11:182:40:427:398:22
8:22
+0:33
35K
21.75 mi13:17:022:46:267:395:44
7:40
-0:42
23M
23.00 mi13:27:162:56:407:4110:14
8:10
+0:30
24M
24.00 mi13:35:303:04:547:428:14
8:14
+0:04
40K
24.85 mi13:42:403:12:047:447:10
8:23
+0:09
25.2M
25.20 mi13:45:503:15:147:453:10
9:11
+0:48
Finish
26.22 mi13:54:043:23:287:468:14
8:05
-1:06

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

7:30 /mi

Average Pace

7:46 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

5:07

3% of race

Time at Steady Pace

2:32:57

75% of race

Time at Slower Pace

45:24

22% of race

Average Pace: 7:46 /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 mi10:54:2523:497:4023:49
7:40
#13667
10K
6.21 mi11:17:5947:237:3823:34
7:35
#13272
15K
9.32 mi11:41:191:10:437:3523:20
7:31
#12751
20K
12.43 mi12:04:491:34:137:3523:30
7:34
#12327
Half
13.11 mi12:09:561:39:207:355:07
7:30
#12311
25K
15.53 mi12:28:151:57:397:3418:19
7:33
#11952
30K
18.64 mi12:52:182:21:427:3624:03
7:44
#11446
20M
20.00 mi13:02:562:32:207:3710:38
7:49
#11232
21M
21.00 mi13:11:182:40:427:398:22
8:22
#11094
35K
21.75 mi13:17:022:46:267:395:44
7:40
#11014
23M
23.00 mi13:27:162:56:407:4110:14
8:10
#10995
24M
24.00 mi13:35:303:04:547:428:14
8:14
#11030
40K
24.85 mi13:42:403:12:047:447:10
8:23
#11083
25.2M
25.20 mi13:45:503:15:147:453:10
9:11
#11103
Finish
26.22 mi13:54:043:23:287:468:14
8:05
#11169
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi136673687368711863(Top 42%)2831(Top 23%)2831(Top 52%)
10K6.21 mi3.10 mi13272+3953508+1793508+17912894(Top 45%)3310(Top 27%)3310(Top 61%)
15K9.32 mi3.11 mi12751+5213238+2703238+27011863(Top 42%)2831(Top 23%)2831(Top 52%)
20K12.43 mi3.11 mi12327+4243045+1933045+19311301(Top 40%)2632(Top 22%)2632(Top 48%)
Half13.11 mi0.68 mi12311+163043+23043+211769(Top 41%)2808(Top 23%)2808(Top 51%)
25K15.53 mi2.42 mi11952+3592896+1472896+14710419(Top 37%)2295(Top 19%)2295(Top 42%)
30K18.64 mi3.11 mi11446+5062701+1952701+1959502(Top 33%)2051(Top 17%)2051(Top 38%)
20M20.00 mi1.36 mi11232+2142629+722629+729228(Top 32%)2098(Top 17%)2098(Top 38%)
21M21.00 mi1.00 mi11094+1382595+342595+349677(Top 34%)2464(Top 20%)2464(Top 45%)
35K21.75 mi0.75 mi11014+802583+122583+129842(Top 35%)2534(Top 21%)2534(Top 46%)
23M23.00 mi1.25 mi10995+192616-332616-3311211(Top 39%)3328(Top 27%)3328(Top 61%)
24M24.00 mi1.00 mi11030-352674-582674-5812811(Top 45%)4211(Top 34%)4211(Top 77%)
40K24.85 mi0.85 mi11083-532734-602734-6012698(Top 45%)4272(Top 35%)4272(Top 78%)
25.2M25.20 mi0.35 mi11103-202762-282762-2812834(Top 45%)4392(Top 36%)4392(Top 80%)
Finish26.22 mi1.02 mi11169-662839-772839-7713455(Top 47%)4663(Top 38%)4663(Top 85%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11863

Females

2831

F18-39

2831

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12894

Females

3310

F18-39

3310

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11863

Females

2831

F18-39

2831

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11301

Females

2632

F18-39

2632

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11769

Females

2808

F18-39

2808

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

10419

Females

2295

F18-39

2295

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

9502

Females

2051

F18-39

2051

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

9228

Females

2098

F18-39

2098

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9677

Females

2464

F18-39

2464

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9842

Females

2534

F18-39

2534

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

11211

Females

3328

F18-39

3328

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

12811

Females

4211

F18-39

4211

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12698

Females

4272

F18-39

4272

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12834

Females

4392

F18-39

4392

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

13455

Females

4663

F18-39

4663

Passing Analysis

Category:
Athletes Passed
3313
Passed By
815
Net Change
+2498
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13667
5K → 10K517122+395#13667#13272
10K → 15K56544+521#13272#12751
15K → 20K45228+424#12751#12327
20K → Half4024+16#12327#12311
Half → 25K37314+359#12311#11952
25K → 30K53428+506#11952#11446
30K → 20M23319+214#11446#11232
20M → 21M16830+138#11232#11094
21M → 35K10525+80#11094#11014
35K → 23M11596+19#11014#10995
23M → 24M73108-35#10995#11030
24M → 40K58111-53#11030#11083
40K → 25.2M2545-20#11083#11103
25.2M → Finish55121-66#11103#11169
TOTALS3313815+2498
📊

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