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BOSTON MARATHON 2026

Marina Sakamoto

Bib: 24390•F

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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 (F55-59)
#0 / 951
Top 37%
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
26:06
3.11 mi
Rank: #19522
Start → 5K
26:06 | 8:25/mi
10K
51:51
6.21 mi
Rank: #19298 (+224)
5K → 10K
25:45 | 8:18/mi
15K
1:17:35
9.32 mi
Rank: #19142 (+156)
10K → 15K
25:44 | 8:17/mi
20K
1:43:35
12.43 mi
Rank: #18977 (+165)
15K → 20K
26:00 | 8:23/mi
HALF
1:49:16
13.11 mi
Rank: #18996 (-19)
20K → HALF
5:41 | 8:21/mi
25K
2:10:20
15.53 mi
Rank: #19108 (-112)
HALF → 25K
21:04 | 8:42/mi
30K
2:39:17
18.64 mi
Rank: #19490 (-382)
25K → 30K
28:57 | 9:20/mi
20M
2:51:58
20.00 mi
Rank: #19562 (-72)
30K → 20M
12:41 | 9:21/mi
21M
3:01:59
21.00 mi
Rank: #19629 (-67)
20M → 21M
10:01 | 10:01/mi
35K
3:08:51
21.75 mi
Rank: #19677 (-48)
21M → 35K
6:52 | 9:11/mi
23M
3:20:38
23.00 mi
Rank: #19735 (-58)
35K → 23M
11:47 | 9:25/mi
24M
3:29:56
24.00 mi
Rank: #19787 (-52)
23M → 24M
9:18 | 9:18/mi
40K
3:38:24
24.85 mi
Rank: #19902 (-115)
24M → 40K
8:28 | 9:55/mi
25.2M
3:41:59
25.20 mi
Rank: #19920 (-18)
40K → 25.2M
3:35 | 10:24/mi
FINISH
3:51:02
26.22 mi
Rank: #19933 (-13)
25.2M → FINISH
9:03 | 8:53/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:49:16
Pace8:21 /mi
2nd Half
Distance13.11 mi
Time2:01:46
Pace9:18 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:29:5526:068:2526:06
8:25
-
10K
6.21 mi11:55:4051:518:2125:45
8:18
-0:07
15K
9.32 mi12:21:241:17:358:2025:44
8:17
-0:01
20K
12.43 mi12:47:241:43:358:2126:00
8:23
+0:06
HALF
13.11 mi12:53:051:49:168:215:41
8:21
-0:02
25K
15.53 mi13:14:092:10:208:2421:04
8:42
+0:21
30K
18.64 mi13:43:062:39:178:3328:57
9:20
+0:38
20M
20.00 mi13:55:472:51:588:3612:41
9:21
+0:01
21M
21.00 mi14:05:483:01:598:4010:01
10:01
+0:40
35K
21.75 mi14:12:403:08:518:426:52
9:11
-0:50
23M
23.00 mi14:24:273:20:388:4411:47
9:25
+0:14
24M
24.00 mi14:33:453:29:568:459:18
9:18
-0:07
40K
24.85 mi14:42:133:38:248:488:28
9:55
+0:37
25.2M
25.20 mi14:45:483:41:598:493:35
10:24
+0:29
FINISH
26.22 mi14:54:513:51:028:509:03
8:53
-1:31

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

8:17 /mi

Average Pace

8:49 /mi

Slowest Pace

10:24 /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

2:10:20

56% of race

Time at Steady Pace

1:18:38

34% of race

Time at Slower Pace

22:04

10% of race

Average Pace: 8:49 /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 mi11:29:5526:068:2526:06
8:25
#19522
10K
6.21 mi11:55:4051:518:2125:45
8:18
#19298
15K
9.32 mi12:21:241:17:358:2025:44
8:17
#19142
20K
12.43 mi12:47:241:43:358:2126:00
8:23
#18977
HALF
13.11 mi12:53:051:49:168:215:41
8:21
#18996
25K
15.53 mi13:14:092:10:208:2421:04
8:42
#19108
30K
18.64 mi13:43:062:39:178:3328:57
9:20
#19490
20M
20.00 mi13:55:472:51:588:3612:41
9:21
#19562
21M
21.00 mi14:05:483:01:598:4010:01
10:01
#19629
35K
21.75 mi14:12:403:08:518:426:52
9:11
#19677
23M
23.00 mi14:24:273:20:388:4411:47
9:25
#19735
24M
24.00 mi14:33:453:29:568:459:18
9:18
#19787
40K
24.85 mi14:42:133:38:248:488:28
9:55
#19902
25.2M
25.20 mi14:45:483:41:598:493:35
10:24
#19920
FINISH
26.22 mi14:54:513:51:028:509:03
8:53
#19933
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi195227379737918882(Top 65%)6972(Top 55%)6972(Top 733%)
10K6.21 mi3.10 mi19298+2247236+1437236+14319117(Top 66%)7091(Top 56%)7091(Top 746%)
15K9.32 mi3.11 mi19142+1567135+1017135+10118882(Top 65%)6972(Top 55%)6972(Top 733%)
20K12.43 mi3.11 mi18977+1657050+857050+8518541(Top 64%)6825(Top 54%)6825(Top 718%)
HALF13.11 mi0.68 mi18996-197060-107060-1019329(Top 67%)7233(Top 58%)7233(Top 761%)
25K15.53 mi2.42 mi19108-1127135-757135-7519652(Top 68%)7473(Top 59%)7473(Top 786%)
30K18.64 mi3.11 mi19490-3827383-2487383-24821014(Top 72%)8263(Top 66%)8263(Top 869%)
20M20.00 mi1.36 mi19562-727433-507433-5020420(Top 70%)8037(Top 64%)8037(Top 845%)
21M21.00 mi1.00 mi19629-677494-617494-6120503(Top 71%)8107(Top 64%)8107(Top 852%)
35K21.75 mi0.75 mi19677-487524-307524-3020731(Top 71%)8303(Top 66%)8303(Top 873%)
23M23.00 mi1.25 mi19735-587586-627586-6220317(Top 70%)8121(Top 65%)8121(Top 854%)
24M24.00 mi1.00 mi19787-527626-407626-4020643(Top 71%)8361(Top 66%)8361(Top 879%)
40K24.85 mi0.85 mi19902-1157696-707696-7021665(Top 75%)8926(Top 71%)8926(Top 939%)
25.2M25.20 mi0.35 mi19920-187709-137709-1320760(Top 72%)8438(Top 67%)8438(Top 887%)
FINISH26.22 mi1.02 mi19933-137733-247733-2420012(Top 69%)8089(Top 64%)8089(Top 851%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21
+97ft-345ft

Overall

18882

Females

6972

F55-59

6972

5K→10K

3.1 - 6.2 mi

Top 66%
×5
+79ft-138ft

Overall

19117

Females

7091

F55-59

7091

10K→15K

6.2 - 9.3 mi

Top 65%
×3
+67ft-78ft

Overall

18882

Females

6972

F55-59

6972

15K→20K

9.3 - 12.4 mi

Top 64%
×5
+106ft-86ft

Overall

18541

Females

6825

F55-59

6825

20K→HALF

12.4 - 13.1 mi

Top 67%
×2
+19ft-37ft

Overall

19329

Females

7233

F55-59

7233

HALF→25K

13.1 - 15.5 mi

Top 68%
×4
+66ft-88ft

Overall

19652

Females

7473

F55-59

7473

25K→30K

15.5 - 18.6 mi

Top 72%
×9
+181ft-148ft

Overall

21014

Females

8263

F55-59

8263

30K→20M

18.6 - 20.0 mi

Top 70%
×5
+64ft-50ft

Overall

20420

Females

8037

F55-59

8037

20M→21M

20.0 - 21.0 mi

Top 71%
×8
+106ft-24ft

Overall

20503

Females

8107

F55-59

8107

21M→35K

21.0 - 21.8 mi

Top 71%
×7
+17ft-86ft

Overall

20731

Females

8303

F55-59

8303

35K→23M

21.8 - 23.0 mi

Top 70%
×5
+23ft-63ft

Overall

20317

Females

8121

F55-59

8121

23M→24M

23.0 - 24.0 mi

Top 71%
×6
+12ft-82ft

Overall

20643

Females

8361

F55-59

8361

24M→40K

24.0 - 24.9 mi

Top 75%
×1
+6ft-20ft

Overall

21665

Females

8926

F55-59

8926

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1
+13ft-16ft

Overall

20760

Females

8438

F55-59

8438

25.2M→FINISH

25.2 - 26.2 mi

Top 69%
×2
+22ft-21ft

Overall

20012

Females

8089

F55-59

8089

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1484
Passed By
1895
Net Change
-411
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19522
5K → 10K399175+224#19522#19298
10K → 15K261105+156#19298#19142
15K → 20K22964+165#19142#18977
20K → HALF3150-19#18977#18996
HALF → 25K86198-112#18996#19108
25K → 30K96478-382#19108#19490
30K → 20M68140-72#19490#19562
20M → 21M72139-67#19562#19629
21M → 35K3078-48#19629#19677
35K → 23M68126-58#19677#19735
23M → 24M54106-52#19735#19787
24M → 40K29144-115#19787#19902
40K → 25.2M2139-18#19902#19920
25.2M → FINISH4053-13#19920#19933
TOTALS14841895-411
📊

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