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BOSTON MARATHON 2023

Bill Kotaska

Bib: 12314•M

MO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 40%
Division (M60-64)
#0 / 1110
Top 9%
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
7:34/mi
23:32
↑ 97↓ 3451.5%
10K· 6.21 mi
7:26/mi
46:39
↑ 79↓ 1380.4%
15K· 9.32 mi
7:28/mi
1:09:52
↑ 67↓ 78
20K· 12.43 mi
7:45/mi
1:33:57
↑ 106↓ 860.1%
Half· 13.11 mi
7:30/mi
1:39:04
↑ 19↓ 370.5%
25K· 15.53 mi
7:37/mi
1:57:31
↑ 66↓ 880.2%
30K· 18.64 mi
7:51/mi
2:21:55
↑ 181↓ 1480.2%
20M
7:52/mi
2:32:36
↑ 64↓ 500.2%
21M
8:17/mi
2:40:53
↑ 106↓ 241.6%
35K· 21.75 mi
7:45/mi
2:46:41
↑ 17↓ 861.7%
23M
7:58/mi
2:56:39
↑ 23↓ 630.6%
24M
7:45/mi
3:04:24
↓ 821.3%
40K· 24.85 mi
7:54/mi
3:11:09
↓ 200.3%
25.2M
8:33/mi
3:14:06
↑ 13↓ 160.2%
Finish· 26.22 mi
7:55/mi
3:22:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:04
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:43:06
Pace7:52 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2023:327:3423:32
7:34
-
10K
6.21 mi11:14:2746:397:3023:07
7:26
-0:08
15K
9.32 mi11:37:401:09:527:3023:13
7:28
+0:02
20K
12.43 mi12:01:451:33:577:3424:05
7:45
+0:17
Half
13.11 mi12:06:521:39:047:335:07
7:30
-0:15
25K
15.53 mi12:25:191:57:317:3418:27
7:37
+0:07
30K
18.64 mi12:49:432:21:557:3724:24
7:51
+0:14
20M
20.00 mi13:00:242:32:367:3810:41
7:52
+0:01
21M
21.00 mi13:08:412:40:537:408:17
8:17
+0:25
35K
21.75 mi13:14:292:46:417:405:48
7:45
-0:32
23M
23.00 mi13:24:272:56:397:419:58
7:58
+0:13
24M
24.00 mi13:32:123:04:247:417:45
7:45
-0:13
40K
24.85 mi13:38:573:11:097:416:45
7:54
+0:09
25.2M
25.20 mi13:41:543:14:067:422:57
8:33
+0:39
Finish
26.22 mi13:49:583:22:107:438:04
7:55
-0:38

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

7:26 /mi

Average Pace

7:43 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:56

94% of race

Time at Steady Pace

11:14

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:43 /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 mi10:51:2023:327:3423:32
7:34
#10284
10K
6.21 mi11:14:2746:397:3023:07
7:26
#10099
15K
9.32 mi11:37:401:09:527:3023:13
7:28
#9999
20K
12.43 mi12:01:451:33:577:3424:05
7:45
#10348
Half
13.11 mi12:06:521:39:047:335:07
7:30
#10334
25K
15.53 mi12:25:191:57:317:3418:27
7:37
#10182
30K
18.64 mi12:49:432:21:557:3724:24
7:51
#10071
20M
20.00 mi13:00:242:32:367:3810:41
7:52
#9978
21M
21.00 mi13:08:412:40:537:408:17
8:17
#9902
35K
21.75 mi13:14:292:46:417:405:48
7:45
#9912
23M
23.00 mi13:24:272:56:397:419:58
7:58
#9844
24M
24.00 mi13:32:123:04:247:417:45
7:45
#9801
40K
24.85 mi13:38:573:11:097:416:45
7:54
#9762
25.2M
25.20 mi13:41:543:14:067:422:57
8:33
#9744
Finish
26.22 mi13:49:583:22:107:438:04
7:55
#9782
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi10284828282829941(Top 37%)8113(Top 53%)8113(Top 731%)
10K6.21 mi3.10 mi10099+1858205+778205+779973(Top 37%)8157(Top 54%)8157(Top 735%)
15K9.32 mi3.11 mi9999+1008160+458160+459941(Top 37%)8113(Top 53%)8113(Top 731%)
20K12.43 mi3.11 mi10348-3498339-1798339-17911300(Top 42%)8705(Top 57%)8705(Top 784%)
Half13.11 mi0.68 mi10334+148328+118328+1110181(Top 38%)8193(Top 54%)8193(Top 738%)
25K15.53 mi2.42 mi10182+1528225+1038225+1039608(Top 36%)7768(Top 51%)7768(Top 700%)
30K18.64 mi3.11 mi10071+1118135+908135+909762(Top 37%)7702(Top 51%)7702(Top 694%)
20M20.00 mi1.36 mi9978+938056+798056+799298(Top 35%)7358(Top 48%)7358(Top 663%)
21M21.00 mi1.00 mi9902+767986+707986+709126(Top 34%)7141(Top 47%)7141(Top 643%)
35K21.75 mi0.75 mi9912-107978+87978+810267(Top 39%)7760(Top 51%)7760(Top 699%)
23M23.00 mi1.25 mi9844+687907+717907+719466(Top 36%)7212(Top 48%)7212(Top 650%)
24M24.00 mi1.00 mi9801+437852+557852+559413(Top 35%)7111(Top 47%)7111(Top 641%)
40K24.85 mi0.85 mi9762+397799+537799+539283(Top 35%)6969(Top 46%)6969(Top 628%)
25.2M25.20 mi0.35 mi9744+187781+187781+189814(Top 37%)7200(Top 47%)7200(Top 649%)
Finish26.22 mi1.02 mi9782-387769+127769+1211479(Top 43%)8027(Top 53%)8027(Top 723%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

9941

Males

8113

M60-64

8113

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

9973

Males

8157

M60-64

8157

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

9941

Males

8113

M60-64

8113

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11300

Males

8705

M60-64

8705

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10181

Males

8193

M60-64

8193

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

9608

Males

7768

M60-64

7768

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9762

Males

7702

M60-64

7702

30K→20M

18.6 - 20.0 mi

Top 35%
×5story building
+64ft-50ft

Overall

9298

Males

7358

M60-64

7358

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9126

Males

7141

M60-64

7141

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

10267

Males

7760

M60-64

7760

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9466

Males

7212

M60-64

7212

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9413

Males

7111

M60-64

7111

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9283

Males

6969

M60-64

6969

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9814

Males

7200

M60-64

7200

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

11479

Males

8027

M60-64

8027

Passing Analysis

Category:
Athletes Passed
1542*
Passed By
790
Net Change
+751
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10284
5K → 10K408*223+185#10284#10099
20K → Half3117+14#10348#10334
Half → 25K21462+152#10334#10182
25K → 30K213*102+111#10182#10071
30K → 20M142*49+93#10071#9978
20M → 21M11841+76#9978#9902
21M → 35K3545-10#9902#9912
35K → 23M11244+68#9912#9844
23M → 24M8037+43#9844#9801
24M → 40K84*45+39#9801#9762
40K → 25.2M4325+18#9762#9744
25.2M → Finish62*100-38#9744#9782
TOTALS1542*790+751

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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