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BOSTON MARATHON 2023

Tats Tanaka

Bib: 14392•M

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:08/mi
25:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:58/mi
50:00
↑ 79↓ 1380.4%
15K· 9.32 mi
8:12/mi
1:15:30
↑ 67↓ 78
20K· 12.43 mi
8:23/mi
1:41:33
↑ 106↓ 860.1%
Half· 13.11 mi
8:15/mi
1:47:11
↑ 19↓ 370.5%
25K· 15.53 mi
8:28/mi
2:07:43
↑ 66↓ 880.2%
30K· 18.64 mi
8:49/mi
2:35:06
↑ 181↓ 1480.2%
20M
9:02/mi
2:47:23
↑ 64↓ 500.2%
21M
9:53/mi
2:57:16
↑ 106↓ 241.6%
35K· 21.75 mi
8:49/mi
3:03:52
↑ 17↓ 861.7%
23M
9:09/mi
3:15:19
↑ 23↓ 630.6%
24M
8:52/mi
3:24:11
↓ 821.3%
40K· 24.85 mi
9:14/mi
3:32:05
↓ 200.3%
25.2M
10:35/mi
3:35:44
↑ 13↓ 160.2%
Finish· 26.22 mi
9:07/mi
3:45:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:11
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time1:57:50
Pace8:59 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:5825:158:0825:15
8:08
-
10K
6.21 mi11:19:4350:008:0324:45
7:58
-0:10
15K
9.32 mi11:45:131:15:308:0625:30
8:12
+0:14
20K
12.43 mi12:11:161:41:338:1026:03
8:23
+0:11
Half
13.11 mi12:16:541:47:118:115:38
8:15
-0:08
25K
15.53 mi12:37:262:07:438:1320:32
8:28
+0:13
30K
18.64 mi13:04:492:35:068:1927:23
8:49
+0:21
20M
20.00 mi13:17:062:47:238:2212:17
9:02
+0:13
21M
21.00 mi13:26:592:57:168:269:53
9:53
+0:51
35K
21.75 mi13:33:353:03:528:276:36
8:49
-1:04
23M
23.00 mi13:45:023:15:198:3011:27
9:09
+0:20
24M
24.00 mi13:53:543:24:118:308:52
8:52
-0:17
40K
24.85 mi14:01:483:32:058:327:54
9:14
+0:22
25.2M
25.20 mi14:05:273:35:448:343:39
10:35
+1:21
Finish
26.22 mi14:14:443:45:018:359:17
9:07
-1:28

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

7:58 /mi

Average Pace

8:35 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:43

57% of race

Time at Steady Pace

1:15:52

34% of race

Time at Slower Pace

21:26

10% of race

Average Pace: 8:35 /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 mi10:54:5825:158:0825:15
8:08
#14906
10K
6.21 mi11:19:4350:008:0324:45
7:58
#14715
15K
9.32 mi11:45:131:15:308:0625:30
8:12
#15120
20K
12.43 mi12:11:161:41:338:1026:03
8:23
#15385
Half
13.11 mi12:16:541:47:118:115:38
8:15
#15428
25K
15.53 mi12:37:262:07:438:1320:32
8:28
#15498
30K
18.64 mi13:04:492:35:068:1927:23
8:49
#15617
20M
20.00 mi13:17:062:47:238:2212:17
9:02
#15666
21M
21.00 mi13:26:592:57:168:269:53
9:53
#15805
35K
21.75 mi13:33:353:03:528:276:36
8:49
#15822
23M
23.00 mi13:45:023:15:198:3011:27
9:09
#15900
24M
24.00 mi13:53:543:24:118:308:52
8:52
#15931
40K
24.85 mi14:01:483:32:058:327:54
9:14
#15974
25.2M
25.20 mi14:05:273:35:448:343:39
10:35
#16048
Finish
26.22 mi14:14:443:45:018:359:17
9:07
#16184
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi14906103031030315900(Top 60%)10648(Top 70%)10648(Top 519%)
10K6.21 mi3.10 mi14715+19110221+8210221+8214533(Top 55%)10142(Top 67%)10142(Top 494%)
15K9.32 mi3.11 mi15120-40510363-14210363-14215900(Top 60%)10648(Top 70%)10648(Top 519%)
20K12.43 mi3.11 mi15385-26510444-8110444-8116148(Top 61%)10686(Top 70%)10686(Top 521%)
Half13.11 mi0.68 mi15428-4310456-1210456-1216160(Top 61%)10745(Top 71%)10745(Top 524%)
25K15.53 mi2.42 mi15498-7010453+310453+316001(Top 60%)10541(Top 69%)10541(Top 514%)
30K18.64 mi3.11 mi15617-11910466-1310466-1316148(Top 61%)10545(Top 69%)10545(Top 514%)
20M20.00 mi1.36 mi15666-4910458+810458+816735(Top 63%)10717(Top 71%)10717(Top 522%)
21M21.00 mi1.00 mi15805-13910482-2410482-2417553(Top 66%)11027(Top 73%)11027(Top 537%)
35K21.75 mi0.75 mi15822-1710474+810474+817012(Top 64%)10704(Top 71%)10704(Top 522%)
23M23.00 mi1.25 mi15900-7810478-410478-416740(Top 63%)10561(Top 70%)10561(Top 515%)
24M24.00 mi1.00 mi15931-3110477+110477+116555(Top 62%)10427(Top 69%)10427(Top 508%)
40K24.85 mi0.85 mi15974-4310489-1210489-1217248(Top 65%)10686(Top 70%)10686(Top 521%)
25.2M25.20 mi0.35 mi16048-7410522-3310522-3319312(Top 73%)11603(Top 76%)11603(Top 565%)
Finish26.22 mi1.02 mi16184-13610563-4110563-4118483(Top 69%)11296(Top 74%)11296(Top 550%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

15900

Males

10648

M50-54

10648

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

14533

Males

10142

M50-54

10142

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

15900

Males

10648

M50-54

10648

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16148

Males

10686

M50-54

10686

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

16160

Males

10745

M50-54

10745

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

16001

Males

10541

M50-54

10541

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

16148

Males

10545

M50-54

10545

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

16735

Males

10717

M50-54

10717

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17553

Males

11027

M50-54

11027

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

17012

Males

10704

M50-54

10704

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

16740

Males

10561

M50-54

10561

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

16555

Males

10427

M50-54

10427

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17248

Males

10686

M50-54

10686

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19312

Males

11603

M50-54

11603

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18483

Males

11296

M50-54

11296

Passing Analysis

Category:
Athletes Passed
1205
Passed By
2483
Net Change
-1278
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14906
5K → 10K393202+191#14906#14715
10K → 15K73478-405#14715#15120
15K → 20K96361-265#15120#15385
20K → Half2265-43#15385#15428
Half → 25K118188-70#15428#15498
25K → 30K132251-119#15498#15617
30K → 20M73122-49#15617#15666
20M → 21M46185-139#15666#15805
21M → 35K4865-17#15805#15822
35K → 23M55133-78#15822#15900
23M → 24M6596-31#15900#15931
24M → 40K3982-43#15931#15974
40K → 25.2M1286-74#15974#16048
25.2M → Finish33169-136#16048#16184
TOTALS12052483-1278
📊

Passing Visuals

Category:
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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