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BOSTON MARATHON 2025

Emiko Iwakabe

Bib: 24323•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
28:31
Rank: #23157
Start → 5K
28:31 | 9:11/mi
10K· 6.21 mi
57:37
Rank: #23457 (-300)
5K → 10K
29:06 | 9:22/mi
15K· 9.32 mi
1:28:19
Rank: #23972 (-515)
10K → 15K
30:42 | 9:53/mi
20K· 12.43 mi
1:58:30
Rank: #23839 (+133)
15K → 20K
30:11 | 9:43/mi
Half· 13.11 mi
2:04:57
Rank: #23820 (+19)
20K → Half
6:27 | 9:27/mi
25K· 15.53 mi
2:28:35
Rank: #23597 (+223)
Half → 25K
23:38 | 9:45/mi
30K· 18.64 mi
3:00:19
Rank: #23316 (+281)
25K → 30K
31:44 | 10:13/mi
20M
3:14:11
Rank: #23177 (+139)
30K → 20M
13:52 | 10:12/mi
21M
3:25:06
Rank: #23062 (+115)
20M → 21M
10:55 | 10:55/mi
35K· 21.75 mi
3:32:19
Rank: #22981 (+81)
21M → 35K
7:13 | 9:39/mi
23M
3:45:00
Rank: #22849 (+132)
35K → 23M
12:41 | 10:08/mi
24M
3:54:42
Rank: #22724 (+125)
23M → 24M
9:42 | 9:42/mi
40K· 24.85 mi
4:03:13
Rank: #22629 (+95)
24M → 40K
8:31 | 9:58/mi
25.2M
4:07:10
Rank: #22622 (+7)
40K → 25.2M
3:57 | 11:27/mi
Finish· 26.22 mi
4:17:08
Rank: #22612 (+10)
25.2M → Finish
9:58 | 9:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:57
Pace9:32 /mi
2nd Half
Distance13.11 mi
Time2:12:11
Pace10:05 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:1428:319:1128:31
9:11
-
10K
6.21 mi11:57:2057:379:1629:06
9:22
+0:11
15K
9.32 mi12:28:021:28:199:2930:42
9:53
+0:31
20K
12.43 mi12:58:131:58:309:3230:11
9:43
-0:10
Half
13.11 mi13:04:402:04:579:326:27
9:27
-0:16
25K
15.53 mi13:28:182:28:359:3423:38
9:45
+0:18
30K
18.64 mi14:00:023:00:199:4031:44
10:13
+0:28
20M
20.00 mi14:13:543:14:119:4313:52
10:12
-0:01
21M
21.00 mi14:24:493:25:069:4610:55
10:55
+0:43
35K
21.75 mi14:32:023:32:199:467:13
9:39
-1:16
23M
23.00 mi14:44:433:45:009:4712:41
10:08
+0:29
24M
24.00 mi14:54:253:54:429:479:42
9:42
-0:26
40K
24.85 mi15:02:564:03:139:478:31
9:58
+0:16
25.2M
25.20 mi15:06:534:07:109:483:57
11:27
+1:29
Finish
26.22 mi15:16:514:17:089:499:58
9:47
-1:40

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

9:11 /mi

Average Pace

9:49 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:04:04

25% of race

Time at Steady Pace

1:59:55

47% of race

Time at Slower Pace

1:13:09

28% of race

Average Pace: 9:48 /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 mi11:28:1428:319:1128:31
9:11
#23157
10K
6.21 mi11:57:2057:379:1629:06
9:22
#23457
15K
9.32 mi12:28:021:28:199:2930:42
9:53
#23972
20K
12.43 mi12:58:131:58:309:3230:11
9:43
#23839
Half
13.11 mi13:04:402:04:579:326:27
9:27
#23820
25K
15.53 mi13:28:182:28:359:3423:38
9:45
#23597
30K
18.64 mi14:00:023:00:199:4031:44
10:13
#23316
20M
20.00 mi14:13:543:14:119:4313:52
10:12
#23177
21M
21.00 mi14:24:493:25:069:4610:55
10:55
#23062
35K
21.75 mi14:32:023:32:199:467:13
9:39
#22981
23M
23.00 mi14:44:433:45:009:4712:41
10:08
#22849
24M
24.00 mi14:54:253:54:429:479:42
9:42
#22724
40K
24.85 mi15:02:564:03:139:478:31
9:58
#22629
25.2M
25.20 mi15:06:534:07:109:483:57
11:27
#22622
Finish
26.22 mi15:16:514:17:089:499:58
9:47
#22612
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi231579252925224733(Top 87%)10074(Top 82%)10074(Top 1013%)
10K6.21 mi3.10 mi23457-3009397-1459397-14523742(Top 84%)9537(Top 78%)9537(Top 959%)
15K9.32 mi3.11 mi23972-5159659-2629659-26224733(Top 87%)10074(Top 82%)10074(Top 1013%)
20K12.43 mi3.11 mi23839+1339605+549605+5423531(Top 83%)9440(Top 77%)9440(Top 950%)
Half13.11 mi0.68 mi23820+199591+149591+1423445(Top 83%)9397(Top 77%)9397(Top 945%)
25K15.53 mi2.42 mi23597+2239477+1149477+11422639(Top 80%)9005(Top 74%)9005(Top 906%)
30K18.64 mi3.11 mi23316+2819358+1199358+11922221(Top 78%)8885(Top 73%)8885(Top 894%)
20M20.00 mi1.36 mi23177+1399299+599299+5921599(Top 76%)8685(Top 71%)8685(Top 874%)
21M21.00 mi1.00 mi23062+1159259+409259+4021189(Top 75%)8550(Top 70%)8550(Top 860%)
35K21.75 mi0.75 mi22981+819230+299230+2920861(Top 73%)8431(Top 69%)8431(Top 848%)
23M23.00 mi1.25 mi22849+1329179+519179+5120913(Top 74%)8510(Top 70%)8510(Top 856%)
24M24.00 mi1.00 mi22724+1259132+479132+4720413(Top 72%)8305(Top 68%)8305(Top 836%)
40K24.85 mi0.85 mi22629+959103+299103+2920372(Top 72%)8352(Top 68%)8352(Top 840%)
25.2M25.20 mi0.35 mi22622+79111-89111-821966(Top 77%)9138(Top 75%)9138(Top 919%)
Finish26.22 mi1.02 mi22612+109122-119122-1122223(Top 78%)9278(Top 76%)9278(Top 933%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

24733

Females

10074

F55-59

10074

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

23742

Females

9537

F55-59

9537

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

24733

Females

10074

F55-59

10074

15K→20K

9.3 - 12.4 mi

Top 83%
×5stories
+106ft-86ft

Overall

23531

Females

9440

F55-59

9440

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

23445

Females

9397

F55-59

9397

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

22639

Females

9005

F55-59

9005

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

22221

Females

8885

F55-59

8885

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

21599

Females

8685

F55-59

8685

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

21189

Females

8550

F55-59

8550

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20861

Females

8431

F55-59

8431

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

20913

Females

8510

F55-59

8510

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

20413

Females

8305

F55-59

8305

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20372

Females

8352

F55-59

8352

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21966

Females

9138

F55-59

9138

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

22223

Females

9278

F55-59

9278

Passing Analysis

Category:
Athletes Passed
1794
Passed By
1249
Net Change
+545
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23157
5K → 10K118418-300#23157#23457
10K → 15K54569-515#23457#23972
15K → 20K20067+133#23972#23839
20K → Half3314+19#23839#23820
Half → 25K24623+223#23820#23597
25K → 30K32443+281#23597#23316
30K → 20M15516+139#23316#23177
20M → 21M13419+115#23177#23062
21M → 35K843+81#23062#22981
35K → 23M14311+132#22981#22849
23M → 24M1327+125#22849#22724
24M → 40K10611+95#22724#22629
40K → 25.2M2114+7#22629#22622
25.2M → Finish4434+10#22622#22612
TOTALS17941249+545
📊

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