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BOSTON MARATHON 2025

Yungchen Shih

Bib: 24358•F

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

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
8:08/mi
25:15
↑ 97↓ 3451.5%
10K· 6.21 mi
8:17/mi
50:58
↑ 79↓ 1380.4%
15K· 9.32 mi
8:23/mi
1:17:02
↑ 67↓ 78
20K· 12.43 mi
8:49/mi
1:44:27
↑ 106↓ 860.1%
Half· 13.11 mi
8:42/mi
1:50:23
↑ 19↓ 370.5%
25K· 15.53 mi
9:38/mi
2:13:44
↑ 66↓ 880.2%
30K· 18.64 mi
10:35/mi
2:46:36
↑ 181↓ 1480.2%
20M
12:51/mi
3:04:04
↑ 64↓ 500.2%
21M
11:24/mi
3:15:28
↑ 106↓ 241.6%
35K· 21.75 mi
10:04/mi
3:23:00
↑ 17↓ 861.7%
23M
10:20/mi
3:35:56
↑ 23↓ 630.6%
24M
10:21/mi
3:46:17
↓ 821.3%
40K· 24.85 mi
10:46/mi
3:55:29
↓ 200.3%
25.2M
12:25/mi
3:59:46
↑ 13↓ 160.2%
Finish· 26.22 mi
10:29/mi
4:10:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:23
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time2:20:04
Pace10:41 /mi
📊Positive Split: 26.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:0725:158:0825:15
8:08
-
10K
6.21 mi11:48:5050:588:1225:43
8:17
+0:09
15K
9.32 mi12:14:541:17:028:1626:04
8:23
+0:06
20K
12.43 mi12:42:191:44:278:2427:25
8:49
+0:26
Half
13.11 mi12:48:151:50:238:255:56
8:42
-0:07
25K
15.53 mi13:11:362:13:448:3723:21
9:38
+0:56
30K
18.64 mi13:44:282:46:368:5632:52
10:35
+0:57
20M
20.00 mi14:01:563:04:049:1217:28
12:51
+2:16
21M
21.00 mi14:13:203:15:289:1811:24
11:24
-1:27
35K
21.75 mi14:20:523:23:009:207:32
10:04
-1:20
23M
23.00 mi14:33:483:35:569:2312:56
10:20
+0:16
24M
24.00 mi14:44:093:46:179:2610:21
10:21
+0:01
40K
24.85 mi14:53:213:55:299:289:12
10:46
+0:25
25.2M
25.20 mi14:57:383:59:469:314:17
12:25
+1:39
Finish
26.22 mi15:08:194:10:279:3410:41
10:29
-1:56

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

8:08 /mi

Average Pace

9:34 /mi

Slowest Pace

12:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:23

44% of race

Time at Steady Pace

1:46:55

43% of race

Time at Slower Pace

33:09

13% of race

Average Pace: 9:33 /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 mi11:23:0725:158:0825:15
8:08
#17575
10K
6.21 mi11:48:5050:588:1225:43
8:17
#18005
15K
9.32 mi12:14:541:17:028:1626:04
8:23
#18188
20K
12.43 mi12:42:191:44:278:2427:25
8:49
#18689
Half
13.11 mi12:48:151:50:238:255:56
8:42
#18774
25K
15.53 mi13:11:362:13:448:3723:21
9:38
#19569
30K
18.64 mi13:44:282:46:368:5632:52
10:35
#20564
20M
20.00 mi14:01:563:04:049:1217:28
12:51
#21481
21M
21.00 mi14:13:203:15:289:1811:24
11:24
#21572
35K
21.75 mi14:20:523:23:009:207:32
10:04
#21599
23M
23.00 mi14:33:483:35:569:2312:56
10:20
#21577
24M
24.00 mi14:44:093:46:179:2610:21
10:21
#21618
40K
24.85 mi14:53:213:55:299:289:12
10:46
#21666
25.2M
25.20 mi14:57:383:59:469:314:17
12:25
#21711
Finish
26.22 mi15:08:194:10:279:3410:41
10:29
#21799
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi175756082608218655(Top 66%)6701(Top 55%)6701(Top 674%)
10K6.21 mi3.10 mi18005-4306332-2506332-25018418(Top 65%)6553(Top 54%)6553(Top 659%)
15K9.32 mi3.11 mi18188-1836441-1096441-10918655(Top 66%)6701(Top 55%)6701(Top 674%)
20K12.43 mi3.11 mi18689-5016733-2926733-29220088(Top 71%)7531(Top 62%)7531(Top 758%)
Half13.11 mi0.68 mi18774-856776-436776-4320420(Top 72%)7721(Top 63%)7721(Top 777%)
25K15.53 mi2.42 mi19569-7957235-4597235-45922293(Top 78%)8809(Top 72%)8809(Top 886%)
30K18.64 mi3.11 mi20564-9957849-6147849-61423121(Top 81%)9389(Top 77%)9389(Top 945%)
20M20.00 mi1.36 mi21481-9178360-5118360-51126311(Top 93%)11172(Top 91%)11172(Top 1124%)
21M21.00 mi1.00 mi21572-918430-708430-7022406(Top 79%)9195(Top 75%)9195(Top 925%)
35K21.75 mi0.75 mi21599-278455-258455-2522110(Top 78%)9089(Top 74%)9089(Top 914%)
23M23.00 mi1.25 mi21577+228480-258480-2521526(Top 76%)8832(Top 72%)8832(Top 889%)
24M24.00 mi1.00 mi21618-418520-408520-4022409(Top 79%)9345(Top 76%)9345(Top 940%)
40K24.85 mi0.85 mi21666-488580-608580-6022598(Top 80%)9499(Top 78%)9499(Top 956%)
25.2M25.20 mi0.35 mi21711-458614-348614-3424065(Top 85%)10194(Top 83%)10194(Top 1026%)
Finish26.22 mi1.02 mi21799-888672-588672-5824251(Top 85%)10287(Top 84%)10287(Top 1035%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

18655

Females

6701

F55-59

6701

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18418

Females

6553

F55-59

6553

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

18655

Females

6701

F55-59

6701

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

20088

Females

7531

F55-59

7531

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

20420

Females

7721

F55-59

7721

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

22293

Females

8809

F55-59

8809

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

23121

Females

9389

F55-59

9389

30K→20M

18.6 - 20.0 mi

Top 93%
×5story building
+64ft-50ft

Overall

26311

Females

11172

F55-59

11172

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22406

Females

9195

F55-59

9195

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

22110

Females

9089

F55-59

9089

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

21526

Females

8832

F55-59

8832

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

22409

Females

9345

F55-59

9345

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22598

Females

9499

F55-59

9499

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24065

Females

10194

F55-59

10194

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2story building
+22ft-21ft

Overall

24251

Females

10287

F55-59

10287

Passing Analysis

Category:
Athletes Passed
756
Passed By
4980
Net Change
-4224
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17575
5K → 10K138568-430#17575#18005
10K → 15K121304-183#18005#18188
15K → 20K83584-501#18188#18689
20K → Half18103-85#18689#18774
Half → 25K35830-795#18774#19569
25K → 30K521047-995#19569#20564
30K → 20M13930-917#20564#21481
20M → 21M53144-91#21481#21572
21M → 35K3663-27#21572#21599
35K → 23M10280+22#21599#21577
23M → 24M3576-41#21577#21618
24M → 40K4391-48#21618#21666
40K → 25.2M853-45#21666#21711
25.2M → Finish19107-88#21711#21799
TOTALS7564980-4224
📊

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