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BOSTON MARATHON 2025

Nobuko Nakai

Bib: 29056•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F60-64)
#0 / 624
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:17
Rank: #25754
Start → 5K
31:17 | 10:04/mi
10K· 6.21 mi
1:01:25
Rank: #25153 (+601)
5K → 10K
30:08 | 9:42/mi
15K· 9.32 mi
1:31:04
Rank: #24755 (+398)
10K → 15K
29:39 | 9:33/mi
20K· 12.43 mi
2:02:02
Rank: #24584 (+171)
15K → 20K
30:58 | 9:58/mi
Half· 13.11 mi
2:08:37
Rank: #24560 (+24)
20K → Half
6:35 | 9:39/mi
25K· 15.53 mi
2:33:24
Rank: #24448 (+112)
Half → 25K
24:47 | 10:13/mi
30K· 18.64 mi
3:08:41
Rank: #24499 (-51)
25K → 30K
35:17 | 11:21/mi
20M
3:23:38
Rank: #24451 (+48)
30K → 20M
14:57 | 11:00/mi
21M
3:36:23
Rank: #24470 (-19)
20M → 21M
12:45 | 12:45/mi
35K· 21.75 mi
3:44:32
Rank: #24459 (+11)
21M → 35K
8:09 | 10:54/mi
23M
3:58:01
Rank: #24369 (+90)
35K → 23M
13:29 | 10:46/mi
24M
4:08:34
Rank: #24296 (+73)
23M → 24M
10:33 | 10:33/mi
40K· 24.85 mi
4:17:28
Rank: #24229 (+67)
24M → 40K
8:54 | 10:25/mi
25.2M
4:21:26
Rank: #24197 (+32)
40K → 25.2M
3:58 | 11:30/mi
Finish· 26.22 mi
4:31:24
Rank: #24138 (+59)
25.2M → Finish
9:58 | 9:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:08:37
Pace9:49 /mi
2nd Half
Distance13.11 mi
Time2:22:47
Pace10:54 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3631:1710:0431:17
10:04
-
10K
6.21 mi12:20:441:01:259:5330:08
9:42
-0:22
15K
9.32 mi12:50:231:31:049:4629:39
9:33
-0:09
20K
12.43 mi13:21:212:02:029:4930:58
9:58
+0:25
Half
13.11 mi13:27:562:08:379:496:35
9:39
-0:19
25K
15.53 mi13:52:432:33:249:5224:47
10:13
+0:34
30K
18.64 mi14:28:003:08:4110:0735:17
11:21
+1:08
20M
20.00 mi14:42:573:23:3810:1114:57
11:00
-0:21
21M
21.00 mi14:55:423:36:2310:1812:45
12:45
+1:45
35K
21.75 mi15:03:513:44:3210:198:09
10:54
-1:51
23M
23.00 mi15:17:203:58:0110:2113:29
10:46
-0:08
24M
24.00 mi15:27:534:08:3410:2110:33
10:33
-0:13
40K
24.85 mi15:36:474:17:2810:228:54
10:25
-0:08
25.2M
25.20 mi15:40:454:21:2610:223:58
11:30
+1:05
Finish
26.22 mi15:50:434:31:2410:229:58
9:47
-1:43

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

9:33 /mi

Average Pace

10:22 /mi

Slowest Pace

12:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:18

40% of race

Time at Steady Pace

1:29:00

33% of race

Time at Slower Pace

1:15:06

28% of race

Average Pace: 10:21 /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 mi11:50:3631:1710:0431:17
10:04
#25754
10K
6.21 mi12:20:441:01:259:5330:08
9:42
#25153
15K
9.32 mi12:50:231:31:049:4629:39
9:33
#24755
20K
12.43 mi13:21:212:02:029:4930:58
9:58
#24584
Half
13.11 mi13:27:562:08:379:496:35
9:39
#24560
25K
15.53 mi13:52:432:33:249:5224:47
10:13
#24448
30K
18.64 mi14:28:003:08:4110:0735:17
11:21
#24499
20M
20.00 mi14:42:573:23:3810:1114:57
11:00
#24451
21M
21.00 mi14:55:423:36:2310:1812:45
12:45
#24470
35K
21.75 mi15:03:513:44:3210:198:09
10:54
#24459
23M
23.00 mi15:17:203:58:0110:2113:29
10:46
#24369
24M
24.00 mi15:27:534:08:3410:2110:33
10:33
#24296
40K
24.85 mi15:36:474:17:2810:228:54
10:25
#24229
25.2M
25.20 mi15:40:454:21:2610:223:58
11:30
#24197
Finish
26.22 mi15:50:434:31:2410:229:58
9:47
#24138
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi25754106191061923868(Top 84%)9583(Top 78%)9583(Top 1536%)
10K6.21 mi3.10 mi25153+60110311+30810311+30824616(Top 87%)10028(Top 82%)10028(Top 1607%)
15K9.32 mi3.11 mi24755+39810089+22210089+22223868(Top 84%)9583(Top 78%)9583(Top 1536%)
20K12.43 mi3.11 mi24584+17110017+7210017+7224165(Top 85%)9810(Top 80%)9810(Top 1572%)
Half13.11 mi0.68 mi24560+2410006+1110006+1123995(Top 84%)9706(Top 79%)9706(Top 1555%)
25K15.53 mi2.42 mi24448+1129950+569950+5623773(Top 84%)9626(Top 79%)9626(Top 1543%)
30K18.64 mi3.11 mi24499-5110004-5410004-5424629(Top 87%)10193(Top 83%)10193(Top 1633%)
20M20.00 mi1.36 mi24451+489986+189986+1823588(Top 83%)9729(Top 80%)9729(Top 1559%)
21M21.00 mi1.00 mi24470-1910014-2810014-2824739(Top 87%)10430(Top 85%)10430(Top 1671%)
35K21.75 mi0.75 mi24459+1110022-810022-824003(Top 85%)10060(Top 82%)10060(Top 1612%)
23M23.00 mi1.25 mi24369+909986+369986+3622690(Top 80%)9440(Top 77%)9440(Top 1513%)
24M24.00 mi1.00 mi24296+739954+329954+3222970(Top 81%)9624(Top 79%)9624(Top 1542%)
40K24.85 mi0.85 mi24229+679941+139941+1321696(Top 76%)9046(Top 74%)9046(Top 1450%)
25.2M25.20 mi0.35 mi24197+329934+79934+722110(Top 78%)9220(Top 75%)9220(Top 1478%)
Finish26.22 mi1.02 mi24138+599908+269908+2622232(Top 78%)9287(Top 76%)9287(Top 1488%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21stories
+97ft-345ft

Overall

23868

Females

9583

F60-64

9583

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

24616

Females

10028

F60-64

10028

10K→15K

6.2 - 9.3 mi

Top 84%
×3stories
+67ft-78ft

Overall

23868

Females

9583

F60-64

9583

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

24165

Females

9810

F60-64

9810

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

23995

Females

9706

F60-64

9706

Half→25K

13.1 - 15.5 mi

Top 84%
×4stories
+66ft-88ft

Overall

23773

Females

9626

F60-64

9626

25K→30K

15.5 - 18.6 mi

Top 87%
×9stories
+181ft-148ft

Overall

24629

Females

10193

F60-64

10193

30K→20M

18.6 - 20.0 mi

Top 83%
×5stories
+64ft-50ft

Overall

23588

Females

9729

F60-64

9729

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

24739

Females

10430

F60-64

10430

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

24003

Females

10060

F60-64

10060

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

22690

Females

9440

F60-64

9440

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

22970

Females

9624

F60-64

9624

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21696

Females

9046

F60-64

9046

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22110

Females

9220

F60-64

9220

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

22232

Females

9287

F60-64

9287

Passing Analysis

Category:
Athletes Passed
2120
Passed By
504
Net Change
+1616
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25754
5K → 10K62120+601#25754#25153
10K → 15K41315+398#25153#24755
15K → 20K22352+171#24755#24584
20K → Half3410+24#24584#24560
Half → 25K16856+112#24560#24448
25K → 30K106157-51#24448#24499
30K → 20M8436+48#24499#24451
20M → 21M5473-19#24451#24470
21M → 35K3423+11#24470#24459
35K → 23M10919+90#24459#24369
23M → 24M8613+73#24369#24296
24M → 40K7710+67#24296#24229
40K → 25.2M397+32#24229#24197
25.2M → Finish7213+59#24197#24138
TOTALS2120504+1616
📊

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