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BOSTON MARATHON 2025

Naoko Kiuchi

Bib: 22207•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

Start
0:00:00
Race begins
5K· 3.11 mi
27:24
Rank: #21626
Start → 5K
27:24 | 8:49/mi
10K· 6.21 mi
55:36
Rank: #22197 (-571)
5K → 10K
28:12 | 9:05/mi
15K· 9.32 mi
1:23:58
Rank: #22320 (-123)
10K → 15K
28:22 | 9:08/mi
20K· 12.43 mi
1:53:49
Rank: #22620 (-300)
15K → 20K
29:51 | 9:36/mi
Half· 13.11 mi
2:00:12
Rank: #22645 (-25)
20K → Half
6:23 | 9:21/mi
25K· 15.53 mi
2:23:43
Rank: #22624 (+21)
Half → 25K
23:31 | 9:42/mi
30K· 18.64 mi
2:56:21
Rank: #22686 (-62)
25K → 30K
32:38 | 10:30/mi
20M
3:10:24
Rank: #22621 (+65)
30K → 20M
14:03 | 10:20/mi
21M
3:21:47
Rank: #22598 (+23)
20M → 21M
11:23 | 11:23/mi
35K· 21.75 mi
3:29:06
Rank: #22525 (+73)
21M → 35K
7:19 | 9:47/mi
23M
3:41:58
Rank: #22457 (+68)
35K → 23M
12:52 | 10:17/mi
24M
3:52:11
Rank: #22414 (+43)
23M → 24M
10:13 | 10:13/mi
40K· 24.85 mi
4:01:00
Rank: #22362 (+52)
24M → 40K
8:49 | 10:19/mi
25.2M
4:05:06
Rank: #22371 (-9)
40K → 25.2M
4:06 | 11:53/mi
Finish· 26.22 mi
4:15:42
Rank: #22439 (-68)
25.2M → Finish
10:36 | 10:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:12
Pace9:10 /mi
2nd Half
Distance13.11 mi
Time2:15:30
Pace10:20 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:2027:248:4927:24
8:49
-
10K
6.21 mi11:55:3255:368:5728:12
9:05
+0:16
15K
9.32 mi12:23:541:23:589:0128:22
9:08
+0:03
20K
12.43 mi12:53:451:53:499:1029:51
9:36
+0:28
Half
13.11 mi13:00:082:00:129:106:23
9:21
-0:15
25K
15.53 mi13:23:392:23:439:1523:31
9:42
+0:21
30K
18.64 mi13:56:172:56:219:2832:38
10:30
+0:48
20M
20.00 mi14:10:203:10:249:3114:03
10:20
-0:10
21M
21.00 mi14:21:433:21:479:3711:23
11:23
+1:03
35K
21.75 mi14:29:023:29:069:377:19
9:47
-1:36
23M
23.00 mi14:41:543:41:589:3912:52
10:17
+0:30
24M
24.00 mi14:52:073:52:119:4010:13
10:13
-0:04
40K
24.85 mi15:00:564:01:009:428:49
10:19
+0:06
25.2M
25.20 mi15:05:024:05:069:444:06
11:53
+1:34
Finish
26.22 mi15:15:384:15:429:4610:36
10:24
-1:29

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

8:49 /mi

Average Pace

9:46 /mi

Slowest Pace

11:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:02

59% of race

Time at Steady Pace

1:29:11

35% of race

Time at Slower Pace

15:29

6% of race

Average Pace: 9:45 /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 mi11:27:2027:248:4927:24
8:49
#21626
10K
6.21 mi11:55:3255:368:5728:12
9:05
#22197
15K
9.32 mi12:23:541:23:589:0128:22
9:08
#22320
20K
12.43 mi12:53:451:53:499:1029:51
9:36
#22620
Half
13.11 mi13:00:082:00:129:106:23
9:21
#22645
25K
15.53 mi13:23:392:23:439:1523:31
9:42
#22624
30K
18.64 mi13:56:172:56:219:2832:38
10:30
#22686
20M
20.00 mi14:10:203:10:249:3114:03
10:20
#22621
21M
21.00 mi14:21:433:21:479:3711:23
11:23
#22598
35K
21.75 mi14:29:023:29:069:377:19
9:47
#22525
23M
23.00 mi14:41:543:41:589:3912:52
10:17
#22457
24M
24.00 mi14:52:073:52:119:4010:13
10:13
#22414
40K
24.85 mi15:00:564:01:009:428:49
10:19
#22362
25.2M
25.20 mi15:05:024:05:069:444:06
11:53
#22371
Finish
26.22 mi15:15:384:15:429:4610:36
10:24
#22439
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi216268422842222599(Top 80%)8891(Top 73%)8891(Top 894%)
10K6.21 mi3.10 mi22197-5718725-3038725-30322727(Top 80%)8988(Top 74%)8988(Top 904%)
15K9.32 mi3.11 mi22320-1238764-398764-3922599(Top 80%)8891(Top 73%)8891(Top 894%)
20K12.43 mi3.11 mi22620-3008917-1538917-15323237(Top 82%)9267(Top 76%)9267(Top 932%)
Half13.11 mi0.68 mi22645-258927-108927-1023148(Top 81%)9231(Top 75%)9231(Top 929%)
25K15.53 mi2.42 mi22624+218941-148941-1422502(Top 79%)8933(Top 73%)8933(Top 899%)
30K18.64 mi3.11 mi22686-629009-689009-6822951(Top 81%)9294(Top 76%)9294(Top 935%)
20M20.00 mi1.36 mi22621+659000+99000+921987(Top 77%)8884(Top 73%)8884(Top 894%)
21M21.00 mi1.00 mi22598+239003-39003-322366(Top 79%)9175(Top 75%)9175(Top 923%)
35K21.75 mi0.75 mi22525+738978+258978+2521298(Top 75%)8672(Top 71%)8672(Top 872%)
23M23.00 mi1.25 mi22457+688970+88970+821364(Top 75%)8732(Top 71%)8732(Top 878%)
24M24.00 mi1.00 mi22414+438962+88962+821999(Top 77%)9135(Top 75%)9135(Top 919%)
40K24.85 mi0.85 mi22362+528961+18961+121425(Top 75%)8889(Top 73%)8889(Top 894%)
25.2M25.20 mi0.35 mi22371-98972-118972-1123019(Top 81%)9662(Top 79%)9662(Top 972%)
Finish26.22 mi1.02 mi22439-689025-539025-5324061(Top 85%)10196(Top 83%)10196(Top 1026%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21stories
+97ft-345ft

Overall

22599

Females

8891

F55-59

8891

5K→10K

3.1 - 6.2 mi

Top 80%
×5stories
+79ft-138ft

Overall

22727

Females

8988

F55-59

8988

10K→15K

6.2 - 9.3 mi

Top 80%
×3stories
+67ft-78ft

Overall

22599

Females

8891

F55-59

8891

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23237

Females

9267

F55-59

9267

20K→Half

12.4 - 13.1 mi

Top 81%
×2stories
+19ft-37ft

Overall

23148

Females

9231

F55-59

9231

Half→25K

13.1 - 15.5 mi

Top 79%
×4stories
+66ft-88ft

Overall

22502

Females

8933

F55-59

8933

25K→30K

15.5 - 18.6 mi

Top 81%
×9stories
+181ft-148ft

Overall

22951

Females

9294

F55-59

9294

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

21987

Females

8884

F55-59

8884

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

22366

Females

9175

F55-59

9175

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

21298

Females

8672

F55-59

8672

35K→23M

21.8 - 23.0 mi

Top 75%
×5stories
+23ft-63ft

Overall

21364

Females

8732

F55-59

8732

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

21999

Females

9135

F55-59

9135

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

21425

Females

8889

F55-59

8889

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

23019

Females

9662

F55-59

9662

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

24061

Females

10196

F55-59

10196

Passing Analysis

Category:
Athletes Passed
1208
Passed By
2021
Net Change
-813
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21626
5K → 10K87658-571#21626#22197
10K → 15K149272-123#22197#22320
15K → 20K86386-300#22320#22620
20K → Half2752-25#22620#22645
Half → 25K155134+21#22645#22624
25K → 30K150212-62#22624#22686
30K → 20M10439+65#22686#22621
20M → 21M8865+23#22621#22598
21M → 35K818+73#22598#22525
35K → 23M10537+68#22525#22457
23M → 24M7431+43#22457#22414
24M → 40K6513+52#22414#22362
40K → 25.2M1726-9#22362#22371
25.2M → Finish2088-68#22371#22439
TOTALS12082021-813
📊

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