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BOSTON MARATHON 2025

Noriko Arakawa

Bib: 20008•F

Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Age Group (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
27:37
Rank: #21957
Start → 5K
27:37 | 8:53/mi
10K· 6.21 mi
55:17
Rank: #21948 (+9)
5K → 10K
27:40 | 8:54/mi
15K· 9.32 mi
1:23:19
Rank: #22021 (-73)
10K → 15K
28:02 | 9:01/mi
20K· 12.43 mi
1:52:24
Rank: #22133 (-112)
15K → 20K
29:05 | 9:22/mi
Half· 13.11 mi
1:58:22
Rank: #22053 (+80)
20K → Half
5:58 | 8:45/mi
25K· 15.53 mi
2:21:05
Rank: #21939 (+114)
Half → 25K
22:43 | 9:22/mi
30K· 18.64 mi
2:53:39
Rank: #22213 (-274)
25K → 30K
32:34 | 10:29/mi
20M
3:07:46
Rank: #22213
30K → 20M
14:07 | 10:23/mi
21M
3:18:45
Rank: #22131 (+82)
20M → 21M
10:59 | 10:59/mi
35K· 21.75 mi
3:26:24
Rank: #22144 (-13)
21M → 35K
7:39 | 10:14/mi
23M
3:39:43
Rank: #22144
35K → 23M
13:19 | 10:38/mi
24M
3:50:12
Rank: #22162 (-18)
23M → 24M
10:29 | 10:29/mi
40K· 24.85 mi
3:59:15
Rank: #22166 (-4)
24M → 40K
9:03 | 10:35/mi
25.2M
4:03:11
Rank: #22162 (+4)
40K → 25.2M
3:56 | 11:24/mi
Finish· 26.22 mi
4:13:44
Rank: #22201 (-39)
25.2M → Finish
10:33 | 10:21/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:58:22
Pace9:02 /mi
2nd Half
Distance13.11 mi
Time2:15:22
Pace10:20 /mi
📊Positive Split: 14.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2627:378:5327:37
8:53
-
10K
6.21 mi12:13:0655:178:5427:40
8:54
+0:01
15K
9.32 mi12:41:081:23:198:5628:02
9:01
+0:07
20K
12.43 mi13:10:131:52:249:0329:05
9:22
+0:21
Half
13.11 mi13:16:111:58:229:025:58
8:45
-0:37
25K
15.53 mi13:38:542:21:059:0522:43
9:22
+0:37
30K
18.64 mi14:11:282:53:399:1932:34
10:29
+1:07
20M
20.00 mi14:25:353:07:469:2314:07
10:23
-0:06
21M
21.00 mi14:36:343:18:459:2810:59
10:59
+0:36
35K
21.75 mi14:44:133:26:249:297:39
10:14
-0:45
23M
23.00 mi14:57:323:39:439:3313:19
10:38
+0:24
24M
24.00 mi15:08:013:50:129:3610:29
10:29
-0:09
40K
24.85 mi15:17:043:59:159:389:03
10:35
+0:06
25.2M
25.20 mi15:21:004:03:119:393:56
11:24
+0:49
Finish
26.22 mi15:31:334:13:449:4110:33
10:21
-1:03

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:45 /mi

Average Pace

9:41 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:21:05

56% of race

Time at Steady Pace

1:37:44

39% of race

Time at Slower Pace

14:55

6% of race

Average Pace: 9:41 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:45:2627:378:5327:37
8:53
#21957
10K
6.21 mi12:13:0655:178:5427:40
8:54
#21948
15K
9.32 mi12:41:081:23:198:5628:02
9:01
#22021
20K
12.43 mi13:10:131:52:249:0329:05
9:22
#22133
Half
13.11 mi13:16:111:58:229:025:58
8:45
#22053
25K
15.53 mi13:38:542:21:059:0522:43
9:22
#21939
30K
18.64 mi14:11:282:53:399:1932:34
10:29
#22213
20M
20.00 mi14:25:353:07:469:2314:07
10:23
#22213
21M
21.00 mi14:36:343:18:459:2810:59
10:59
#22131
35K
21.75 mi14:44:133:26:249:297:39
10:14
#22144
23M
23.00 mi14:57:323:39:439:3313:19
10:38
#22144
24M
24.00 mi15:08:013:50:129:3610:29
10:29
#22162
40K
24.85 mi15:17:043:59:159:389:03
10:35
#22166
25.2M
25.20 mi15:21:004:03:119:393:56
11:24
#22162
Finish
26.22 mi15:31:334:13:449:4110:33
10:21
#22201
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi219578603860322149(Top 78%)8637(Top 71%)8637(Top 476%)
10K6.21 mi3.10 mi21948+98579+248579+2421960(Top 77%)8573(Top 70%)8573(Top 473%)
15K9.32 mi3.11 mi22021-738614-358614-3522149(Top 78%)8637(Top 71%)8637(Top 476%)
20K12.43 mi3.11 mi22133-1128670-568670-5622456(Top 79%)8841(Top 72%)8841(Top 488%)
Half13.11 mi0.68 mi22053+808630+408630+4020698(Top 73%)7883(Top 64%)7883(Top 435%)
25K15.53 mi2.42 mi21939+1148569+618569+6121440(Top 75%)8331(Top 68%)8331(Top 460%)
30K18.64 mi3.11 mi22213-2748741-1728741-17222910(Top 81%)9269(Top 76%)9269(Top 511%)
20M20.00 mi1.36 mi222138760-198760-1922123(Top 78%)8967(Top 73%)8967(Top 495%)
21M21.00 mi1.00 mi22131+828740+208740+2021370(Top 75%)8636(Top 71%)8636(Top 476%)
35K21.75 mi0.75 mi22144-138759-198759-1922511(Top 79%)9290(Top 76%)9290(Top 512%)
23M23.00 mi1.25 mi221448800-418800-4122374(Top 79%)9270(Top 76%)9270(Top 511%)
24M24.00 mi1.00 mi22162-188829-298829-2922780(Top 80%)9527(Top 78%)9527(Top 525%)
40K24.85 mi0.85 mi22166-48847-188847-1822163(Top 78%)9285(Top 76%)9285(Top 512%)
25.2M25.20 mi0.35 mi22162+48854-78854-721838(Top 77%)9076(Top 74%)9076(Top 501%)
Finish26.22 mi1.02 mi22201-398894-408894-4023930(Top 84%)10133(Top 83%)10133(Top 559%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

22149

Females

8637

F45-49

8637

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

21960

Females

8573

F45-49

8573

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

22149

Females

8637

F45-49

8637

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

22456

Females

8841

F45-49

8841

20K→Half

12.4 - 13.1 mi

Top 73%
×2stories
+19ft-37ft

Overall

20698

Females

7883

F45-49

7883

Half→25K

13.1 - 15.5 mi

Top 75%
×4stories
+66ft-88ft

Overall

21440

Females

8331

F45-49

8331

25K→30K

15.5 - 18.6 mi

Top 81%
×9stories
+181ft-148ft

Overall

22910

Females

9269

F45-49

9269

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

22123

Females

8967

F45-49

8967

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

21370

Females

8636

F45-49

8636

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

22511

Females

9290

F45-49

9290

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

22374

Females

9270

F45-49

9270

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

22780

Females

9527

F45-49

9527

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22163

Females

9285

F45-49

9285

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21838

Females

9076

F45-49

9076

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2stories
+22ft-21ft

Overall

23930

Females

10133

F45-49

10133

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1442
Passed By
1686
Net Change
-244
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21957
5K → 10K268259+9#21957#21948
10K → 15K167240-73#21948#22021
15K → 20K149261-112#22021#22133
20K → Half822+80#22133#22053
Half → 25K20086+114#22053#21939
25K → 30K109383-274#21939#22213
30K → 20M77770#22213#22213
20M → 21M12947+82#22213#22131
21M → 35K3548-13#22131#22144
35K → 23M83830#22144#22144
23M → 24M3856-18#22144#22162
24M → 40K4751-4#22162#22166
40K → 25.2M2521+4#22166#22162
25.2M → Finish3372-39#22162#22201
TOTALS14421686-244
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing