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BOSTON MARATHON 2026

Miwako Dai

Bib: 23270•F

NY

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F50-54)
#0 / 1233
Race Day Weather
51°/41°F
overcast 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
27:49
3.11 mi
Rank: #22413
Start → 5K
27:49 | 8:58/mi
10K
55:38
6.21 mi
Rank: #22507 (-94)
5K → 10K
27:49 | 8:58/mi
15K
1:23:27
9.32 mi
Rank: #22526 (-19)
10K → 15K
27:49 | 8:58/mi
20K
1:51:16
12.43 mi
Rank: #22266 (+260)
15K → 20K
27:49 | 8:58/mi
HALF
1:57:22
13.11 mi
Rank: #22279 (-13)
20K → HALF
6:06 | 8:58/mi
25K
2:19:01
15.53 mi
Rank: #22017 (+262)
HALF → 25K
21:39 | 8:56/mi
30K
2:47:22
18.64 mi
Rank: #21674 (+343)
25K → 30K
28:21 | 9:08/mi
20M
2:59:46
20.00 mi
Rank: #21498 (+176)
30K → 20M
12:24 | 9:08/mi
21M
3:08:54
21.00 mi
Rank: #21264 (+234)
20M → 21M
9:08 | 9:08/mi
35K
3:15:44
21.75 mi
Rank: #21238 (+26)
21M → 35K
6:50 | 9:08/mi
23M
3:27:09
23.00 mi
Rank: #21113 (+125)
35K → 23M
11:25 | 9:08/mi
24M
3:35:49
24.00 mi
Rank: #20981 (+132)
23M → 24M
8:40 | 8:40/mi
40K
3:43:25
24.85 mi
Rank: #20862 (+119)
24M → 40K
7:36 | 8:54/mi
25.2M
3:46:37
25.20 mi
Rank: #20794 (+68)
40K → 25.2M
3:12 | 9:17/mi
FINISH
3:54:59
26.22 mi
Rank: #20660 (+134)
25.2M → FINISH
8:22 | 8:13/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half⚖️ Balanced
via HALF
Distance13.11 mi
Time1:57:22
Pace8:58 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:57:37
Pace8:59 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:30:3927:498:5827:49
8:58
-
10K
6.21 mi11:58:2855:388:5827:49
8:58
0:00
15K
9.32 mi12:26:171:23:278:5827:49
8:58
0:00
20K
12.43 mi12:54:061:51:168:5827:49
8:58
0:00
HALF
13.11 mi13:00:131:57:228:586:06
8:58
0:00
25K
15.53 mi13:21:522:19:018:5721:39
8:56
-0:02
30K
18.64 mi13:50:132:47:228:5928:21
9:08
+0:12
20M
20.00 mi14:02:372:59:469:0012:24
9:08
0:00
21M
21.00 mi14:11:453:08:549:009:08
9:08
0:00
35K
21.75 mi14:18:343:15:449:006:50
9:08
0:00
23M
23.00 mi14:30:003:27:099:0111:25
9:08
0:00
24M
24.00 mi14:38:403:35:499:008:40
8:40
-0:28
40K
24.85 mi14:46:163:43:259:007:36
8:54
+0:14
25.2M
25.20 mi14:49:283:46:379:003:12
9:17
+0:23
FINISH
26.22 mi14:57:503:54:598:598:22
8:13
-1:04

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

8:13 /mi

Average Pace

8:58 /mi

Slowest Pace

9:17 /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

2:43:39

70% of race

Time at Steady Pace

1:11:20

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:58 /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 mi11:30:3927:498:5827:49
8:58
#22413
10K
6.21 mi11:58:2855:388:5827:49
8:58
#22507
15K
9.32 mi12:26:171:23:278:5827:49
8:58
#22526
20K
12.43 mi12:54:061:51:168:5827:49
8:58
#22266
HALF
13.11 mi13:00:131:57:228:586:06
8:58
#22279
25K
15.53 mi13:21:522:19:018:5721:39
8:56
#22017
30K
18.64 mi13:50:132:47:228:5928:21
9:08
#21674
20M
20.00 mi14:02:372:59:469:0012:24
9:08
#21498
21M
21.00 mi14:11:453:08:549:009:08
9:08
#21264
35K
21.75 mi14:18:343:15:449:006:50
9:08
#21238
23M
23.00 mi14:30:003:27:099:0111:25
9:08
#21113
24M
24.00 mi14:38:403:35:499:008:40
8:40
#20981
40K
24.85 mi14:46:163:43:259:007:36
8:54
#20862
25.2M
25.20 mi14:49:283:46:379:003:12
9:17
#20794
FINISH
26.22 mi14:57:503:54:598:598:22
8:13
#20660
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi224138887888722456(Top 77%)8855(Top 70%)8855(Top 718%)
10K6.21 mi3.10 mi22507-948918-318918-3122636(Top 78%)8967(Top 71%)8967(Top 727%)
15K9.32 mi3.11 mi22526-198921-38921-322456(Top 77%)8855(Top 70%)8855(Top 718%)
20K12.43 mi3.11 mi22266+2608787+1348787+13421705(Top 75%)8520(Top 68%)8520(Top 691%)
HALF13.11 mi0.68 mi22279-138798-118798-1122585(Top 78%)8962(Top 71%)8962(Top 727%)
25K15.53 mi2.42 mi22017+2628665+1338665+13320846(Top 72%)8088(Top 64%)8088(Top 656%)
30K18.64 mi3.11 mi21674+3438511+1548511+15420191(Top 70%)7837(Top 62%)7837(Top 636%)
20M20.00 mi1.36 mi21498+1768440+718440+7119529(Top 67%)7566(Top 60%)7566(Top 614%)
21M21.00 mi1.00 mi21264+2348331+1098331+10916796(Top 58%)6142(Top 49%)6142(Top 498%)
35K21.75 mi0.75 mi21238+268327+48327+420506(Top 71%)8212(Top 65%)8212(Top 666%)
23M23.00 mi1.25 mi21113+1258271+568271+5619115(Top 66%)7541(Top 60%)7541(Top 612%)
24M24.00 mi1.00 mi20981+1328215+568215+5617876(Top 62%)6936(Top 55%)6936(Top 563%)
40K24.85 mi0.85 mi20862+1198166+498166+4917885(Top 62%)6984(Top 56%)6984(Top 566%)
25.2M25.20 mi0.35 mi20794+688137+298137+2916349(Top 56%)6185(Top 49%)6185(Top 502%)
FINISH26.22 mi1.02 mi20660+1348083+548083+5416523(Top 57%)6247(Top 50%)6247(Top 507%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21
+97ft-345ft

Overall

22456

Females

8855

F50-54

8855

5K→10K

3.1 - 6.2 mi

Top 78%
×5
+79ft-138ft

Overall

22636

Females

8967

F50-54

8967

10K→15K

6.2 - 9.3 mi

Top 77%
×3
+67ft-78ft

Overall

22456

Females

8855

F50-54

8855

15K→20K

9.3 - 12.4 mi

Top 75%
×5
+106ft-86ft

Overall

21705

Females

8520

F50-54

8520

20K→HALF

12.4 - 13.1 mi

Top 78%
×2
+19ft-37ft

Overall

22585

Females

8962

F50-54

8962

HALF→25K

13.1 - 15.5 mi

Top 72%
×4
+66ft-88ft

Overall

20846

Females

8088

F50-54

8088

25K→30K

15.5 - 18.6 mi

Top 70%
×9
+181ft-148ft

Overall

20191

Females

7837

F50-54

7837

30K→20M

18.6 - 20.0 mi

Top 67%
×5
+64ft-50ft

Overall

19529

Females

7566

F50-54

7566

20M→21M

20.0 - 21.0 mi

Top 58%
×8
+106ft-24ft

Overall

16796

Females

6142

F50-54

6142

21M→35K

21.0 - 21.8 mi

Top 71%
×7
+17ft-86ft

Overall

20506

Females

8212

F50-54

8212

35K→23M

21.8 - 23.0 mi

Top 66%
×5
+23ft-63ft

Overall

19115

Females

7541

F50-54

7541

23M→24M

23.0 - 24.0 mi

Top 62%
×6
+12ft-82ft

Overall

17876

Females

6936

F50-54

6936

24M→40K

24.0 - 24.9 mi

Top 62%
×1
+6ft-20ft

Overall

17885

Females

6984

F50-54

6984

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1
+13ft-16ft

Overall

16349

Females

6185

F50-54

6185

25.2M→FINISH

25.2 - 26.2 mi

Top 57%
×2
+22ft-21ft

Overall

16523

Females

6247

F50-54

6247

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2458
Passed By
705
Net Change
+1753
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22413
5K → 10K226320-94#22413#22507
10K → 15K153172-19#22507#22526
15K → 20K30444+260#22526#22266
20K → HALF2235-13#22266#22279
HALF → 25K28523+262#22279#22017
25K → 30K36825+343#22017#21674
30K → 20M1859+176#21674#21498
20M → 21M2395+234#21498#21264
21M → 35K6236+26#21264#21238
35K → 23M14015+125#21238#21113
23M → 24M1375+132#21113#20981
24M → 40K1289+119#20981#20862
40K → 25.2M702+68#20862#20794
25.2M → FINISH1395+134#20794#20660
TOTALS2458705+1753
📊

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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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing