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BOSTON MARATHON 2025

Chiao-Lin Yang

Bib: 22484•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
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
10:22/mi
32:12
↑ 97↓ 3451.5%
10K· 6.21 mi
10:54/mi
1:06:05
↑ 79↓ 1380.4%
15K· 9.32 mi
11:07/mi
1:40:38
↑ 67↓ 78
20K· 12.43 mi
12:29/mi
2:19:25
↑ 106↓ 860.1%
Half· 13.11 mi
12:13/mi
2:27:45
↑ 19↓ 370.5%
25K· 15.53 mi
14:13/mi
3:02:14
↑ 66↓ 880.2%
30K· 18.64 mi
13:23/mi
3:43:48
↑ 181↓ 1480.2%
20M
13:12/mi
4:01:44
↑ 64↓ 500.2%
21M
16:12/mi
4:17:56
↑ 106↓ 241.6%
35K· 21.75 mi
14:37/mi
4:28:52
↑ 17↓ 861.7%
23M
14:40/mi
4:47:14
↑ 23↓ 630.6%
24M
14:29/mi
5:01:43
↓ 821.3%
40K· 24.85 mi
15:49/mi
5:15:14
↓ 200.3%
25.2M
16:49/mi
5:21:02
↑ 13↓ 160.2%
Finish· 26.22 mi
13:43/mi
5:35:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:27:45
Pace11:16 /mi
2nd Half
Distance13.11 mi
Time3:07:16
Pace14:17 /mi
📊Positive Split: 26.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:5832:1210:2232:12
10:22
-
10K
6.21 mi12:00:511:06:0510:3833:53
10:54
+0:32
15K
9.32 mi12:35:241:40:3810:4834:33
11:07
+0:13
20K
12.43 mi13:14:112:19:2511:1338:47
12:29
+1:22
Half
13.11 mi13:22:312:27:4511:168:20
12:13
-0:16
25K
15.53 mi13:57:003:02:1411:4434:29
14:13
+2:00
30K
18.64 mi14:38:343:43:4812:0041:34
13:23
-0:50
20M
20.00 mi14:56:304:01:4412:0517:56
13:12
-0:11
21M
21.00 mi15:12:424:17:5612:1716:12
16:12
+3:00
35K
21.75 mi15:23:384:28:5212:2210:56
14:37
-1:35
23M
23.00 mi15:42:004:47:1412:2918:22
14:40
+0:03
24M
24.00 mi15:56:295:01:4312:3414:29
14:29
-0:11
40K
24.85 mi16:10:005:15:1412:4113:31
15:49
+1:20
25.2M
25.20 mi16:15:485:21:0212:445:48
16:49
+1:00
Finish
26.22 mi16:29:475:35:0112:4713:59
13:43
-3:06

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

10:22 /mi

Average Pace

12:47 /mi

Slowest Pace

16:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:45

44% of race

Time at Steady Pace

2:13:23

40% of race

Time at Slower Pace

53:53

16% of race

Average Pace: 12:47 /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 mi11:26:5832:1210:2232:12
10:22
#26442
10K
6.21 mi12:00:511:06:0510:3833:53
10:54
#26743
15K
9.32 mi12:35:241:40:3810:4834:33
11:07
#26786
20K
12.43 mi13:14:112:19:2511:1338:47
12:29
#27061
Half
13.11 mi13:22:312:27:4511:168:20
12:13
#27100
25K
15.53 mi13:57:003:02:1411:4434:29
14:13
#27347
30K
18.64 mi14:38:343:43:4812:0041:34
13:23
#27289
20M
20.00 mi14:56:304:01:4412:0517:56
13:12
#27272
21M
21.00 mi15:12:424:17:5612:1716:12
16:12
#27339
35K
21.75 mi15:23:384:28:5212:2210:56
14:37
#27379
23M
23.00 mi15:42:004:47:1412:2918:22
14:40
#27422
24M
24.00 mi15:56:295:01:4312:3414:29
14:29
#27472
40K
24.85 mi16:10:005:15:1412:4113:31
15:49
#27507
25.2M
25.20 mi16:15:485:21:0212:445:48
16:49
#27540
Finish
26.22 mi16:29:475:35:0112:4713:59
13:43
#27580
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi26442109991099926833(Top 94%)11277(Top 92%)11277(Top 622%)
10K6.21 mi3.10 mi26743-30111192-19311192-19326932(Top 95%)11326(Top 93%)11326(Top 625%)
15K9.32 mi3.11 mi26786-4311227-3511227-3526833(Top 94%)11277(Top 92%)11277(Top 622%)
20K12.43 mi3.11 mi27061-27511404-17711404-17727505(Top 97%)11703(Top 96%)11703(Top 646%)
Half13.11 mi0.68 mi27100-3911427-2311427-2327596(Top 97%)11769(Top 96%)11769(Top 649%)
25K15.53 mi2.42 mi27347-24711585-15811585-15827989(Top 99%)12009(Top 98%)12009(Top 662%)
30K18.64 mi3.11 mi27289+5811578+711578+727033(Top 95%)11513(Top 94%)11513(Top 635%)
20M20.00 mi1.36 mi27272+1711567+1111567+1126629(Top 94%)11352(Top 93%)11352(Top 626%)
21M21.00 mi1.00 mi27339-6711618-5111618-5127892(Top 98%)12001(Top 98%)12001(Top 662%)
35K21.75 mi0.75 mi27379-4011640-2211640-2227955(Top 98%)12066(Top 99%)12066(Top 666%)
23M23.00 mi1.25 mi27422-4311673-3311673-3327739(Top 98%)11973(Top 98%)11973(Top 660%)
24M24.00 mi1.00 mi27472-5011708-3511708-3527869(Top 98%)12054(Top 99%)12054(Top 665%)
40K24.85 mi0.85 mi27507-3511729-2111729-2128053(Top 99%)12122(Top 99%)12122(Top 669%)
25.2M25.20 mi0.35 mi27540-3311752-2311752-2328010(Top 99%)12114(Top 99%)12114(Top 668%)
Finish26.22 mi1.02 mi27580-4011782-3011782-3027947(Top 98%)12065(Top 99%)12065(Top 665%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21story building
+97ft-345ft

Overall

26833

Females

11277

F45-49

11277

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

26932

Females

11326

F45-49

11326

10K→15K

6.2 - 9.3 mi

Top 94%
×3story building
+67ft-78ft

Overall

26833

Females

11277

F45-49

11277

15K→20K

9.3 - 12.4 mi

Top 97%
×5story building
+106ft-86ft

Overall

27505

Females

11703

F45-49

11703

20K→Half

12.4 - 13.1 mi

Top 97%
×2story building
+19ft-37ft

Overall

27596

Females

11769

F45-49

11769

Half→25K

13.1 - 15.5 mi

Top 99%
×4story building
+66ft-88ft

Overall

27989

Females

12009

F45-49

12009

25K→30K

15.5 - 18.6 mi

Top 95%
×9story building
+181ft-148ft

Overall

27033

Females

11513

F45-49

11513

30K→20M

18.6 - 20.0 mi

Top 94%
×5story building
+64ft-50ft

Overall

26629

Females

11352

F45-49

11352

20M→21M

20.0 - 21.0 mi

Top 98%
×8story building
+106ft-24ft

Overall

27892

Females

12001

F45-49

12001

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

27955

Females

12066

F45-49

12066

35K→23M

21.8 - 23.0 mi

Top 98%
×5story building
+23ft-63ft

Overall

27739

Females

11973

F45-49

11973

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

27869

Females

12054

F45-49

12054

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

28053

Females

12122

F45-49

12122

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

28010

Females

12114

F45-49

12114

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2story building
+22ft-21ft

Overall

27947

Females

12065

F45-49

12065

Passing Analysis

Category:
Athletes Passed
430
Passed By
1568
Net Change
-1138
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26442
5K → 10K67368-301#26442#26743
10K → 15K108151-43#26743#26786
15K → 20K37312-275#26786#27061
20K → Half847-39#27061#27100
Half → 25K22269-247#27100#27347
25K → 30K10547+58#27347#27289
30K → 20M3316+17#27289#27272
20M → 21M1077-67#27272#27339
21M → 35K545-40#27339#27379
35K → 23M1053-43#27379#27422
23M → 24M1262-50#27422#27472
24M → 40K742-35#27472#27507
40K → 25.2M033-33#27507#27540
25.2M → Finish646-40#27540#27580
TOTALS4301568-1138
📊

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