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BOSTON MARATHON 2025

Shinobu Kusakabe

Bib: 18864•F

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 50%
Gender (Female)
#0 / 12228
Top 36%
Masters (Masters Women)
#0 / 6759
Top 22%
Division (F50-54)
#0 / 1303
Top 13%
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
7:50/mi
24:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:52/mi
48:45
↑ 79↓ 1380.4%
15K· 9.32 mi
7:56/mi
1:13:25
↑ 67↓ 78
20K· 12.43 mi
8:00/mi
1:38:16
↑ 106↓ 860.1%
Half· 13.11 mi
7:55/mi
1:43:40
↑ 19↓ 370.5%
25K· 15.53 mi
8:02/mi
2:03:08
↑ 66↓ 880.2%
30K· 18.64 mi
8:26/mi
2:29:21
↑ 181↓ 1480.2%
20M
8:25/mi
2:40:47
↑ 64↓ 500.2%
21M
9:26/mi
2:50:13
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
2:56:15
↑ 17↓ 861.7%
23M
8:25/mi
3:06:47
↑ 23↓ 630.6%
24M
8:16/mi
3:15:03
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:22:09
↓ 200.3%
25.2M
9:08/mi
3:25:18
↑ 13↓ 160.2%
Finish· 26.22 mi
8:08/mi
3:33:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:40
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:49:55
Pace8:23 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1624:207:5024:20
7:50
-
10K
6.21 mi11:39:4148:457:5124:25
7:52
+0:02
15K
9.32 mi12:04:211:13:257:5324:40
7:56
+0:04
20K
12.43 mi12:29:121:38:167:5424:51
8:00
+0:04
Half
13.11 mi12:34:361:43:407:545:24
7:55
-0:05
25K
15.53 mi12:54:042:03:087:5619:28
8:02
+0:07
30K
18.64 mi13:20:172:29:218:0126:13
8:26
+0:24
20M
20.00 mi13:31:432:40:478:0211:26
8:25
-0:01
21M
21.00 mi13:41:092:50:138:069:26
9:26
+1:01
35K
21.75 mi13:47:112:56:158:066:02
8:04
-1:22
23M
23.00 mi13:57:433:06:478:0710:32
8:25
+0:21
24M
24.00 mi14:05:593:15:038:088:16
8:16
-0:09
40K
24.85 mi14:13:053:22:098:087:06
8:18
+0:02
25.2M
25.20 mi14:16:143:25:188:093:09
9:08
+0:50
Finish
26.22 mi14:24:313:33:358:098:17
8:08
-1:00

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

7:50 /mi

Average Pace

8:09 /mi

Slowest Pace

9:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

48:45

23% of race

Time at Steady Pace

1:44:04

49% of race

Time at Slower Pace

1:00:46

28% of race

Average Pace: 8:09 /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 mi11:15:1624:207:5024:20
7:50
#15110
10K
6.21 mi11:39:4148:457:5124:25
7:52
#15212
15K
9.32 mi12:04:211:13:257:5324:40
7:56
#15309
20K
12.43 mi12:29:121:38:167:5424:51
8:00
#15164
Half
13.11 mi12:34:361:43:407:545:24
7:55
#15167
25K
15.53 mi12:54:042:03:087:5619:28
8:02
#14964
30K
18.64 mi13:20:172:29:218:0126:13
8:26
#14840
20M
20.00 mi13:31:432:40:478:0211:26
8:25
#14663
21M
21.00 mi13:41:092:50:138:069:26
9:26
#14710
35K
21.75 mi13:47:112:56:158:066:02
8:04
#14608
23M
23.00 mi13:57:433:06:478:0710:32
8:25
#14473
24M
24.00 mi14:05:593:15:038:088:16
8:16
#14392
40K
24.85 mi14:13:053:22:098:087:06
8:18
#14285
25.2M
25.20 mi14:16:143:25:188:093:09
9:08
#14240
Finish
26.22 mi14:24:313:33:358:098:17
8:08
#14185
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi151104596459615579(Top 55%)4896(Top 40%)4896(Top 376%)
10K6.21 mi3.10 mi15212-1024668-724668-7215354(Top 54%)4756(Top 39%)4756(Top 365%)
15K9.32 mi3.11 mi15309-974737-694737-6915579(Top 55%)4896(Top 40%)4896(Top 376%)
20K12.43 mi3.11 mi15164+1454676+614676+6114924(Top 53%)4605(Top 38%)4605(Top 353%)
Half13.11 mi0.68 mi15167-34679-34679-315259(Top 54%)4756(Top 39%)4756(Top 365%)
25K15.53 mi2.42 mi14964+2034594+854594+8514142(Top 50%)4276(Top 35%)4276(Top 328%)
30K18.64 mi3.11 mi14840+1244588+64588+614390(Top 51%)4573(Top 37%)4573(Top 351%)
20M20.00 mi1.36 mi14663+1774510+784510+7813261(Top 47%)4122(Top 34%)4122(Top 316%)
21M21.00 mi1.00 mi14710-474561-514561-5115787(Top 56%)5590(Top 46%)5590(Top 429%)
35K21.75 mi0.75 mi14608+1024510+514510+5112738(Top 45%)4021(Top 33%)4021(Top 309%)
23M23.00 mi1.25 mi14473+1354473+374473+3712795(Top 45%)4161(Top 34%)4161(Top 319%)
24M24.00 mi1.00 mi14392+814448+254448+2513056(Top 46%)4347(Top 36%)4347(Top 334%)
40K24.85 mi0.85 mi14285+1074431+174431+1712204(Top 43%)4026(Top 33%)4026(Top 309%)
25.2M25.20 mi0.35 mi14240+454415+164415+1612628(Top 44%)4307(Top 35%)4307(Top 331%)
Finish26.22 mi1.02 mi14185+554412+34412+313813(Top 49%)4859(Top 40%)4859(Top 373%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

15579

Females

4896

F50-54

4896

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

15354

Females

4756

F50-54

4756

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

15579

Females

4896

F50-54

4896

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

14924

Females

4605

F50-54

4605

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15259

Females

4756

F50-54

4756

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

14142

Females

4276

F50-54

4276

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

14390

Females

4573

F50-54

4573

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

13261

Females

4122

F50-54

4122

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

15787

Females

5590

F50-54

5590

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

12738

Females

4021

F50-54

4021

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12795

Females

4161

F50-54

4161

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

13056

Females

4347

F50-54

4347

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12204

Females

4026

F50-54

4026

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12628

Females

4307

F50-54

4307

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13813

Females

4859

F50-54

4859

Passing Analysis

Category:
Athletes Passed
2320
Passed By
1395
Net Change
+925
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15110
5K → 10K251353-102#15110#15212
10K → 15K173270-97#15212#15309
15K → 20K278133+145#15309#15164
20K → Half3841-3#15164#15167
Half → 25K27875+203#15167#14964
25K → 30K306182+124#14964#14840
30K → 20M22144+177#14840#14663
20M → 21M89136-47#14663#14710
21M → 35K12422+102#14710#14608
35K → 23M17237+135#14608#14473
23M → 24M10423+81#14473#14392
24M → 40K12720+107#14392#14285
40K → 25.2M5813+45#14285#14240
25.2M → Finish10146+55#14240#14185
TOTALS23201395+925
📊

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