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BOSTON MARATHON 2023

Tatsuki Koyama

Bib: 6920•M

TN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 22%
Masters (Masters Men)
#0 / 9891
Top 10%
Division (M45-49)
#0 / 2252
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:59
Rank: #4173
Start → 5K
20:59 | 6:45/mi
10K· 6.21 mi
41:54
Rank: #4403 (-230)
5K → 10K
20:55 | 6:44/mi
15K· 9.32 mi
1:02:37
Rank: #4189 (+214)
10K → 15K
20:43 | 6:40/mi
20K· 12.43 mi
1:23:32
Rank: #4079 (+110)
15K → 20K
20:55 | 6:44/mi
Half· 13.11 mi
1:28:08
Rank: #4108 (-29)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:44:20
Rank: #3926 (+182)
Half → 25K
16:12 | 6:41/mi
30K· 18.64 mi
2:05:33
Rank: #3730 (+196)
25K → 30K
21:13 | 6:50/mi
20M
2:14:55
Rank: #3659 (+71)
30K → 20M
9:22 | 6:54/mi
21M
2:22:18
Rank: #3667 (-8)
20M → 21M
7:23 | 7:23/mi
35K· 21.75 mi
2:27:22
Rank: #3671 (-4)
21M → 35K
5:04 | 6:46/mi
23M
2:36:01
Rank: #3592 (+79)
35K → 23M
8:39 | 6:55/mi
24M
2:42:47
Rank: #3572 (+20)
23M → 24M
6:46 | 6:46/mi
40K· 24.85 mi
2:48:45
Rank: #3557 (+15)
24M → 40K
5:58 | 6:59/mi
25.2M
2:51:21
Rank: #3565 (-8)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
2:58:26
Rank: #3623 (-58)
25.2M → Finish
7:05 | 6:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:08
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:30:18
Pace6:53 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:1620:596:4520:59
6:45
-
10K
6.21 mi10:45:1141:546:4520:55
6:44
-0:01
15K
9.32 mi11:05:541:02:376:4320:43
6:40
-0:04
20K
12.43 mi11:26:491:23:326:4320:55
6:44
+0:04
Half
13.11 mi11:31:251:28:086:434:36
6:45
+0:01
25K
15.53 mi11:47:371:44:206:4316:12
6:41
-0:04
30K
18.64 mi12:08:502:05:336:4421:13
6:50
+0:09
20M
20.00 mi12:18:122:14:556:459:22
6:54
+0:04
21M
21.00 mi12:25:352:22:186:477:23
7:23
+0:29
35K
21.75 mi12:30:392:27:226:475:04
6:46
-0:37
23M
23.00 mi12:39:182:36:016:478:39
6:55
+0:09
24M
24.00 mi12:46:042:42:476:476:46
6:46
-0:09
40K
24.85 mi12:52:022:48:456:475:58
6:59
+0:13
25.2M
25.20 mi12:54:382:51:216:482:36
7:32
+0:33
Finish
26.22 mi13:01:432:58:266:497:05
6:57
-0:35

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

6:40 /mi

Average Pace

6:49 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:27

94% of race

Time at Steady Pace

9:59

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:24:1620:596:4520:59
6:45
#4173
10K
6.21 mi10:45:1141:546:4520:55
6:44
#4403
15K
9.32 mi11:05:541:02:376:4320:43
6:40
#4189
20K
12.43 mi11:26:491:23:326:4320:55
6:44
#4079
Half
13.11 mi11:31:251:28:086:434:36
6:45
#4108
25K
15.53 mi11:47:371:44:206:4316:12
6:41
#3926
30K
18.64 mi12:08:502:05:336:4421:13
6:50
#3730
20M
20.00 mi12:18:122:14:556:459:22
6:54
#3659
21M
21.00 mi12:25:352:22:186:477:23
7:23
#3667
35K
21.75 mi12:30:392:27:226:475:04
6:46
#3671
23M
23.00 mi12:39:182:36:016:478:39
6:55
#3592
24M
24.00 mi12:46:042:42:476:476:46
6:46
#3572
40K
24.85 mi12:52:022:48:456:475:58
6:59
#3557
25.2M
25.20 mi12:54:382:51:216:482:36
7:32
#3565
Finish
26.22 mi13:01:432:58:266:497:05
6:57
#3623
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4173390939093828(Top 14%)3599(Top 24%)3599(Top 160%)
10K6.21 mi3.10 mi4403-2304122-2134122-2134640(Top 17%)4324(Top 28%)4324(Top 192%)
15K9.32 mi3.11 mi4189+2143928+1943928+1943828(Top 14%)3599(Top 24%)3599(Top 160%)
20K12.43 mi3.11 mi4079+1103830+983830+983821(Top 14%)3603(Top 24%)3603(Top 160%)
Half13.11 mi0.68 mi4108-293853-233853-234666(Top 18%)4328(Top 29%)4328(Top 192%)
25K15.53 mi2.42 mi3926+1823698+1553698+1553236(Top 12%)3084(Top 20%)3084(Top 137%)
30K18.64 mi3.11 mi3730+1963523+1753523+1753188(Top 12%)3004(Top 20%)3004(Top 133%)
20M20.00 mi1.36 mi3659+713457+663457+663376(Top 13%)3159(Top 21%)3159(Top 140%)
21M21.00 mi1.00 mi3667-83464-73464-74045(Top 15%)3723(Top 25%)3723(Top 165%)
35K21.75 mi0.75 mi3671-4346434643988(Top 15%)3663(Top 24%)3663(Top 163%)
23M23.00 mi1.25 mi3592+793391+733391+733286(Top 12%)3055(Top 20%)3055(Top 136%)
24M24.00 mi1.00 mi3572+203374+173374+173468(Top 13%)3193(Top 21%)3193(Top 142%)
40K24.85 mi0.85 mi3557+153358+163358+163711(Top 14%)3352(Top 22%)3352(Top 149%)
25.2M25.20 mi0.35 mi3565-83362-43362-44026(Top 15%)3568(Top 24%)3568(Top 158%)
Finish26.22 mi1.02 mi3623-583409-473409-474898(Top 18%)4195(Top 28%)4195(Top 186%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3828

Males

3599

M45-49

3599

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4640

Males

4324

M45-49

4324

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3828

Males

3599

M45-49

3599

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3821

Males

3603

M45-49

3603

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4666

Males

4328

M45-49

4328

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3236

Males

3084

M45-49

3084

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3188

Males

3004

M45-49

3004

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3376

Males

3159

M45-49

3159

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4045

Males

3723

M45-49

3723

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

3988

Males

3663

M45-49

3663

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3286

Males

3055

M45-49

3055

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3468

Males

3193

M45-49

3193

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3711

Males

3352

M45-49

3352

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4026

Males

3568

M45-49

3568

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

4898

Males

4195

M45-49

4195

Passing Analysis

Category:
Athletes Passed
1421
Passed By
871
Net Change
+550
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4173
5K → 10K129359-230#4173#4403
10K → 15K26349+214#4403#4189
15K → 20K15747+110#4189#4079
20K → Half1544-29#4079#4108
Half → 25K19311+182#4108#3926
25K → 30K23135+196#3926#3730
30K → 20M9423+71#3730#3659
20M → 21M5462-8#3659#3667
21M → 35K2731-4#3667#3671
35K → 23M10627+79#3671#3592
23M → 24M5030+20#3592#3572
24M → 40K5035+15#3572#3557
40K → 25.2M1523-8#3557#3565
25.2M → Finish3795-58#3565#3623
TOTALS1421871+550
📊

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