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BOSTON MARATHON 2025

Yoon Chun

Bib: 24932•F

WI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:42
Rank: #20435
Start → 5K
26:42 | 8:36/mi
10K· 6.21 mi
54:33
Rank: #21347 (-912)
5K → 10K
27:51 | 8:58/mi
15K· 9.32 mi
1:22:53
Rank: #21785 (-438)
10K → 15K
28:20 | 9:07/mi
20K· 12.43 mi
1:52:39
Rank: #22222 (-437)
15K → 20K
29:46 | 9:35/mi
Half· 13.11 mi
1:58:55
Rank: #22228 (-6)
20K → Half
6:16 | 9:11/mi
25K· 15.53 mi
2:22:16
Rank: #22280 (-52)
Half → 25K
23:21 | 9:38/mi
30K· 18.64 mi
2:53:55
Rank: #22272 (+8)
25K → 30K
31:39 | 10:11/mi
20M
3:07:50
Rank: #22224 (+48)
30K → 20M
13:55 | 10:14/mi
21M
3:19:20
Rank: #22221 (+3)
20M → 21M
11:30 | 11:30/mi
35K· 21.75 mi
3:26:45
Rank: #22206 (+15)
21M → 35K
7:25 | 9:55/mi
23M
3:39:39
Rank: #22130 (+76)
35K → 23M
12:54 | 10:18/mi
24M
3:49:44
Rank: #22100 (+30)
23M → 24M
10:05 | 10:05/mi
40K· 24.85 mi
3:58:26
Rank: #22042 (+58)
24M → 40K
8:42 | 10:11/mi
25.2M
4:02:15
Rank: #22020 (+22)
40K → 25.2M
3:49 | 11:04/mi
Finish· 26.22 mi
4:12:23
Rank: #22038 (-18)
25.2M → Finish
10:08 | 9:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:55
Pace9:04 /mi
2nd Half
Distance13.11 mi
Time2:13:28
Pace10:11 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:2726:428:3626:42
8:36
-
10K
6.21 mi11:54:1854:338:4727:51
8:58
+0:22
15K
9.32 mi12:22:381:22:538:5428:20
9:07
+0:09
20K
12.43 mi12:52:241:52:399:0429:46
9:35
+0:28
Half
13.11 mi12:58:401:58:559:046:16
9:11
-0:24
25K
15.53 mi13:22:012:22:169:0923:21
9:38
+0:27
30K
18.64 mi13:53:402:53:559:2031:39
10:11
+0:33
20M
20.00 mi14:07:353:07:509:2313:55
10:14
+0:03
21M
21.00 mi14:19:053:19:209:3011:30
11:30
+1:16
35K
21.75 mi14:26:303:26:459:307:25
9:55
-1:35
23M
23.00 mi14:39:243:39:399:3312:54
10:18
+0:23
24M
24.00 mi14:49:293:49:449:3410:05
10:05
-0:13
40K
24.85 mi14:58:113:58:269:368:42
10:11
+0:06
25.2M
25.20 mi15:02:004:02:159:373:49
11:04
+0:53
Finish
26.22 mi15:12:084:12:239:3810:08
9:57
-1:07

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

8:36 /mi

Average Pace

9:38 /mi

Slowest Pace

11:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:09

35% of race

Time at Steady Pace

2:27:55

59% of race

Time at Slower Pace

15:19

6% of race

Average Pace: 9:38 /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 mi11:26:2726:428:3626:42
8:36
#20435
10K
6.21 mi11:54:1854:338:4727:51
8:58
#21347
15K
9.32 mi12:22:381:22:538:5428:20
9:07
#21785
20K
12.43 mi12:52:241:52:399:0429:46
9:35
#22222
Half
13.11 mi12:58:401:58:559:046:16
9:11
#22228
25K
15.53 mi13:22:012:22:169:0923:21
9:38
#22280
30K
18.64 mi13:53:402:53:559:2031:39
10:11
#22272
20M
20.00 mi14:07:353:07:509:2313:55
10:14
#22224
21M
21.00 mi14:19:053:19:209:3011:30
11:30
#22221
35K
21.75 mi14:26:303:26:459:307:25
9:55
#22206
23M
23.00 mi14:39:243:39:399:3312:54
10:18
#22130
24M
24.00 mi14:49:293:49:449:3410:05
10:05
#22100
40K
24.85 mi14:58:113:58:269:368:42
10:11
#22042
25.2M
25.20 mi15:02:004:02:159:373:49
11:04
#22020
Finish
26.22 mi15:12:084:12:239:3810:08
9:57
#22038
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi204357767776722542(Top 79%)8858(Top 72%)8858(Top 891%)
10K6.21 mi3.10 mi21347-9128248-4818248-48122234(Top 78%)8730(Top 71%)8730(Top 878%)
15K9.32 mi3.11 mi21785-4388488-2408488-24022542(Top 79%)8858(Top 72%)8858(Top 891%)
20K12.43 mi3.11 mi22222-4378713-2258713-22523153(Top 82%)9224(Top 75%)9224(Top 928%)
Half13.11 mi0.68 mi22228-68722-98722-922560(Top 79%)8911(Top 73%)8911(Top 896%)
25K15.53 mi2.42 mi22280-528752-308752-3022295(Top 78%)8811(Top 72%)8811(Top 886%)
30K18.64 mi3.11 mi22272+88779-278779-2722161(Top 78%)8854(Top 72%)8854(Top 891%)
20M20.00 mi1.36 mi22224+488766+138766+1321698(Top 76%)8734(Top 71%)8734(Top 879%)
21M21.00 mi1.00 mi22221+38785-198785-1922621(Top 80%)9310(Top 76%)9310(Top 937%)
35K21.75 mi0.75 mi22206+158796-118796-1121677(Top 76%)8864(Top 72%)8864(Top 892%)
23M23.00 mi1.25 mi22130+768790+68790+621435(Top 75%)8780(Top 72%)8780(Top 883%)
24M24.00 mi1.00 mi22100+308791-18791-121604(Top 76%)8913(Top 73%)8913(Top 897%)
40K24.85 mi0.85 mi22042+588782+98782+921023(Top 74%)8681(Top 71%)8681(Top 873%)
25.2M25.20 mi0.35 mi22020+228775+78775+720894(Top 74%)8608(Top 70%)8608(Top 866%)
Finish26.22 mi1.02 mi22038-188800-258800-2522769(Top 80%)9553(Top 78%)9553(Top 961%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

22542

Females

8858

F55-59

8858

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

22234

Females

8730

F55-59

8730

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

22542

Females

8858

F55-59

8858

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23153

Females

9224

F55-59

9224

20K→Half

12.4 - 13.1 mi

Top 79%
×2stories
+19ft-37ft

Overall

22560

Females

8911

F55-59

8911

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22295

Females

8811

F55-59

8811

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

22161

Females

8854

F55-59

8854

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

21698

Females

8734

F55-59

8734

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

22621

Females

9310

F55-59

9310

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

21677

Females

8864

F55-59

8864

35K→23M

21.8 - 23.0 mi

Top 75%
×5stories
+23ft-63ft

Overall

21435

Females

8780

F55-59

8780

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

21604

Females

8913

F55-59

8913

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21023

Females

8681

F55-59

8681

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

20894

Females

8608

F55-59

8608

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2stories
+22ft-21ft

Overall

22769

Females

9553

F55-59

9553

Passing Analysis

Category:
Athletes Passed
1128
Passed By
2731
Net Change
-1603
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20435
5K → 10K46958-912#20435#21347
10K → 15K94532-438#21347#21785
15K → 20K84521-437#21785#22222
20K → Half3541-6#22222#22228
Half → 25K118170-52#22228#22280
25K → 30K197189+8#22280#22272
30K → 20M9244+48#22272#22224
20M → 21M8077+3#22224#22221
21M → 35K4934+15#22221#22206
35K → 23M11842+76#22206#22130
23M → 24M5525+30#22130#22100
24M → 40K8123+58#22100#22042
40K → 25.2M3412+22#22042#22020
25.2M → Finish4563-18#22020#22038
TOTALS11282731-1603
📊

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