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BOSTON MARATHON 2025

Yan Sun

Bib: 22300•F

BC

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
26:25
Rank: #19909
Start → 5K
26:25 | 8:30/mi
10K· 6.21 mi
52:39
Rank: #19675 (+234)
5K → 10K
26:14 | 8:27/mi
15K· 9.32 mi
1:20:41
Rank: #20519 (-844)
10K → 15K
28:02 | 9:01/mi
20K· 12.43 mi
1:49:54
Rank: #21147 (-628)
15K → 20K
29:13 | 9:24/mi
Half· 13.11 mi
1:56:25
Rank: #21336 (-189)
20K → Half
6:31 | 9:33/mi
25K· 15.53 mi
2:19:54
Rank: #21583 (-247)
Half → 25K
23:29 | 9:41/mi
30K· 18.64 mi
2:52:24
Rank: #21977 (-394)
25K → 30K
32:30 | 10:28/mi
20M
3:06:59
Rank: #22076 (-99)
30K → 20M
14:35 | 10:44/mi
21M
3:18:09
Rank: #22038 (+38)
20M → 21M
11:10 | 11:10/mi
35K· 21.75 mi
3:25:51
Rank: #22056 (-18)
21M → 35K
7:42 | 10:18/mi
23M
3:39:37
Rank: #22124 (-68)
35K → 23M
13:46 | 11:00/mi
24M
3:48:39
Rank: #21941 (+183)
23M → 24M
9:02 | 9:02/mi
40K· 24.85 mi
3:56:39
Rank: #21807 (+134)
24M → 40K
8:00 | 9:21/mi
25.2M
4:00:22
Rank: #21774 (+33)
40K → 25.2M
3:43 | 10:47/mi
Finish· 26.22 mi
4:09:49
Rank: #21713 (+61)
25.2M → Finish
9:27 | 9:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:25
Pace8:53 /mi
2nd Half
Distance13.11 mi
Time2:13:24
Pace10:11 /mi
📊Positive Split: 14.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4626:258:3026:25
8:30
-
10K
6.21 mi11:48:0052:398:2826:14
8:27
-0:03
15K
9.32 mi12:16:021:20:418:3928:02
9:01
+0:34
20K
12.43 mi12:45:151:49:548:5129:13
9:24
+0:23
Half
13.11 mi12:51:461:56:258:536:31
9:33
+0:09
25K
15.53 mi13:15:152:19:549:0023:29
9:41
+0:08
30K
18.64 mi13:47:452:52:249:1532:30
10:28
+0:47
20M
20.00 mi14:02:203:06:599:2114:35
10:44
+0:16
21M
21.00 mi14:13:303:18:099:2611:10
11:10
+0:26
35K
21.75 mi14:21:123:25:519:287:42
10:18
-0:52
23M
23.00 mi14:34:583:39:379:3313:46
11:00
+0:42
24M
24.00 mi14:44:003:48:399:329:02
9:02
-1:58
40K
24.85 mi14:52:003:56:399:318:00
9:21
+0:19
25.2M
25.20 mi14:55:434:00:229:323:43
10:47
+1:26
Finish
26.22 mi15:05:104:09:499:329:27
9:16
-1:31

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

8:27 /mi

Average Pace

9:32 /mi

Slowest Pace

11:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:43

36% of race

Time at Steady Pace

1:16:40

31% of race

Time at Slower Pace

1:23:26

33% of race

Average Pace: 9:32 /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 mi11:21:4626:258:3026:25
8:30
#19909
10K
6.21 mi11:48:0052:398:2826:14
8:27
#19675
15K
9.32 mi12:16:021:20:418:3928:02
9:01
#20519
20K
12.43 mi12:45:151:49:548:5129:13
9:24
#21147
Half
13.11 mi12:51:461:56:258:536:31
9:33
#21336
25K
15.53 mi13:15:152:19:549:0023:29
9:41
#21583
30K
18.64 mi13:47:452:52:249:1532:30
10:28
#21977
20M
20.00 mi14:02:203:06:599:2114:35
10:44
#22076
21M
21.00 mi14:13:303:18:099:2611:10
11:10
#22038
35K
21.75 mi14:21:123:25:519:287:42
10:18
#22056
23M
23.00 mi14:34:583:39:379:3313:46
11:00
#22124
24M
24.00 mi14:44:003:48:399:329:02
9:02
#21941
40K
24.85 mi14:52:003:56:399:318:00
9:21
#21807
25.2M
25.20 mi14:55:434:00:229:323:43
10:47
#21774
Finish
26.22 mi15:05:104:09:499:329:27
9:16
#21713
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi199097452745222146(Top 78%)8634(Top 71%)8634(Top 663%)
10K6.21 mi3.10 mi19675+2347288+1647288+16419493(Top 69%)7172(Top 59%)7172(Top 550%)
15K9.32 mi3.11 mi20519-8447763-4757763-47522146(Top 78%)8634(Top 71%)8634(Top 663%)
20K12.43 mi3.11 mi21147-6288108-3458108-34522593(Top 80%)8914(Top 73%)8914(Top 684%)
Half13.11 mi0.68 mi21336-1898225-1178225-11723715(Top 83%)9538(Top 78%)9538(Top 732%)
25K15.53 mi2.42 mi21583-2478371-1468371-14622460(Top 79%)8912(Top 73%)8912(Top 684%)
30K18.64 mi3.11 mi21977-3948610-2398610-23922851(Top 80%)9238(Top 76%)9238(Top 709%)
20M20.00 mi1.36 mi22076-998681-718681-7123028(Top 81%)9433(Top 77%)9433(Top 724%)
21M21.00 mi1.00 mi22038+388687-68687-621822(Top 77%)8879(Top 73%)8879(Top 681%)
35K21.75 mi0.75 mi22056-188705-188705-1822676(Top 80%)9375(Top 77%)9375(Top 719%)
23M23.00 mi1.25 mi22124-688788-838788-8323220(Top 82%)9719(Top 79%)9719(Top 746%)
24M24.00 mi1.00 mi21941+1838708+808708+8017576(Top 62%)6812(Top 56%)6812(Top 523%)
40K24.85 mi0.85 mi21807+1348656+528656+5218141(Top 64%)7199(Top 59%)7199(Top 552%)
25.2M25.20 mi0.35 mi21774+338642+148642+1420012(Top 70%)8173(Top 67%)8173(Top 627%)
Finish26.22 mi1.02 mi21713+618622+208622+2020297(Top 71%)8295(Top 68%)8295(Top 637%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

22146

Females

8634

F50-54

8634

5K→10K

3.1 - 6.2 mi

Top 69%
×5stories
+79ft-138ft

Overall

19493

Females

7172

F50-54

7172

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

22146

Females

8634

F50-54

8634

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

22593

Females

8914

F50-54

8914

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

23715

Females

9538

F50-54

9538

Half→25K

13.1 - 15.5 mi

Top 79%
×4stories
+66ft-88ft

Overall

22460

Females

8912

F50-54

8912

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

22851

Females

9238

F50-54

9238

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

23028

Females

9433

F50-54

9433

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

21822

Females

8879

F50-54

8879

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

22676

Females

9375

F50-54

9375

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

23220

Females

9719

F50-54

9719

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

17576

Females

6812

F50-54

6812

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18141

Females

7199

F50-54

7199

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

20012

Females

8173

F50-54

8173

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2stories
+22ft-21ft

Overall

20297

Females

8295

F50-54

8295

Passing Analysis

Category:
Athletes Passed
1394
Passed By
3198
Net Change
-1804
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19909
5K → 10K405171+234#19909#19675
10K → 15K51895-844#19675#20519
15K → 20K61689-628#20519#21147
20K → Half2191-189#21147#21336
Half → 25K79326-247#21336#21583
25K → 30K92486-394#21583#21977
30K → 20M63162-99#21977#22076
20M → 21M9860+38#22076#22038
21M → 35K3856-18#22038#22056
35K → 23M65133-68#22056#22124
23M → 24M1830+183#22124#21941
24M → 40K1351+134#21941#21807
40K → 25.2M429+33#21807#21774
25.2M → Finish8019+61#21774#21713
TOTALS13943198-1804
📊

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