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BOSTON MARATHON 2026

Ludek Kosina

Bib: 10089•M

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 19%
Gender (Male)
#0 / 16340
Top 30%
Masters (Masters Men)
#0 / 10617
Top 16%
Age Group (M45-49)
#0 / 2413
Top 21%
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
20:31
3.11 mi
Rank: #5022
Start → 5K
20:31 | 6:37/mi
10K
41:07
6.21 mi
Rank: #5130 (-108)
5K → 10K
20:36 | 6:38/mi
15K
1:01:34
9.32 mi
Rank: #5003 (+127)
10K → 15K
20:27 | 6:35/mi
20K
1:22:12
12.43 mi
Rank: #4896 (+107)
15K → 20K
20:38 | 6:39/mi
HALF
1:26:37
13.11 mi
Rank: #4858 (+38)
20K → HALF
4:25 | 6:29/mi
25K
1:42:40
15.53 mi
Rank: #4728 (+130)
HALF → 25K
16:03 | 6:38/mi
30K
2:03:42
18.64 mi
Rank: #4589 (+139)
25K → 30K
21:02 | 6:47/mi
20M
2:12:57
20.00 mi
Rank: #4516 (+73)
30K → 20M
9:15 | 6:49/mi
21M
2:20:07
21.00 mi
Rank: #4468 (+48)
20M → 21M
7:10 | 7:10/mi
35K
2:28:01
21.75 mi
Rank: #5595 (-1127)
21M → 35K
7:54 | 10:34/mi
23M
2:36:47
23.00 mi
Rank: #5563 (+32)
35K → 23M
8:46 | 7:01/mi
24M
2:43:38
24.00 mi
Rank: #5536 (+27)
23M → 24M
6:51 | 6:51/mi
40K
2:49:37
24.85 mi
Rank: #5531 (+5)
24M → 40K
5:59 | 7:00/mi
25.2M
2:52:14
25.20 mi
Rank: #5531
40K → 25.2M
2:37 | 7:36/mi
FINISH
2:59:05
26.22 mi
Rank: #5518 (+13)
25.2M → FINISH
6:51 | 6:44/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:26:37
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:32:28
Pace7:04 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:38:0520:316:3720:31
6:37
-
10K
6.21 mi10:58:4141:076:3820:36
6:38
+0:01
15K
9.32 mi11:19:081:01:346:3720:27
6:35
-0:03
20K
12.43 mi11:39:461:22:126:3720:38
6:39
+0:04
HALF
13.11 mi11:44:111:26:376:374:25
6:29
-0:10
25K
15.53 mi12:00:141:42:406:3716:03
6:38
+0:09
30K
18.64 mi12:21:162:03:426:3921:02
6:47
+0:09
20M
20.00 mi12:30:312:12:576:399:15
6:49
+0:02
21M
21.00 mi12:37:412:20:076:417:10
7:10
+0:21
35K
21.75 mi12:45:352:28:016:497:54
10:34
+3:24
23M
23.00 mi12:54:212:36:476:508:46
7:01
-3:33
24M
24.00 mi13:01:122:43:386:506:51
6:51
-0:10
40K
24.85 mi13:07:112:49:376:505:59
7:00
+0:09
25.2M
25.20 mi13:09:482:52:146:512:37
7:36
+0:36
FINISH
26.22 mi13:16:392:59:056:516:51
6:44
-0:52

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

6:29 /mi

Average Pace

6:50 /mi

Slowest Pace

10:34 /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

0:00

0% of race

Time at Steady Pace

2:48:34

94% of race

Time at Slower Pace

10:31

6% of race

Average Pace: 6:50 /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 mi10:38:0520:316:3720:31
6:37
#5022
10K
6.21 mi10:58:4141:076:3820:36
6:38
#5130
15K
9.32 mi11:19:081:01:346:3720:27
6:35
#5003
20K
12.43 mi11:39:461:22:126:3720:38
6:39
#4896
HALF
13.11 mi11:44:111:26:376:374:25
6:29
#4858
25K
15.53 mi12:00:141:42:406:3716:03
6:38
#4728
30K
18.64 mi12:21:162:03:426:3921:02
6:47
#4589
20M
20.00 mi12:30:312:12:576:399:15
6:49
#4516
21M
21.00 mi12:37:412:20:076:417:10
7:10
#4468
35K
21.75 mi12:45:352:28:016:497:54
10:34
#5595
23M
23.00 mi12:54:212:36:476:508:46
7:01
#5563
24M
24.00 mi13:01:122:43:386:506:51
6:51
#5536
40K
24.85 mi13:07:112:49:376:505:59
7:00
#5531
25.2M
25.20 mi13:09:482:52:146:512:37
7:36
#5531
FINISH
26.22 mi13:16:392:59:056:516:51
6:44
#5518
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5022468646864798(Top 17%)4490(Top 27%)4490(Top 186%)
10K6.21 mi3.10 mi5130-1084781-954781-955286(Top 18%)4898(Top 30%)4898(Top 203%)
15K9.32 mi3.11 mi5003+1274677+1044677+1044798(Top 17%)4490(Top 27%)4490(Top 186%)
20K12.43 mi3.11 mi4896+1074579+984579+984729(Top 16%)4424(Top 27%)4424(Top 183%)
HALF13.11 mi0.68 mi4858+384545+344545+344296(Top 15%)4063(Top 25%)4063(Top 168%)
25K15.53 mi2.42 mi4728+1304430+1154430+1154263(Top 15%)3987(Top 24%)3987(Top 165%)
30K18.64 mi3.11 mi4589+1394301+1294301+1294149(Top 14%)3844(Top 24%)3844(Top 159%)
20M20.00 mi1.36 mi4516+734229+724229+724243(Top 15%)3871(Top 24%)3871(Top 160%)
21M21.00 mi1.00 mi4468+484179+504179+504451(Top 15%)3979(Top 24%)3979(Top 165%)
35K21.75 mi0.75 mi5595-11275076-8975076-89724398(Top 84%)14106(Top 86%)14106(Top 585%)
23M23.00 mi1.25 mi5563+325039+375039+375479(Top 19%)4737(Top 29%)4737(Top 196%)
24M24.00 mi1.00 mi5536+275008+315008+315478(Top 19%)4679(Top 29%)4679(Top 194%)
40K24.85 mi0.85 mi5531+54999+94999+95471(Top 19%)4619(Top 28%)4619(Top 191%)
25.2M25.20 mi0.35 mi55314993+64993+65706(Top 20%)4722(Top 29%)4722(Top 196%)
FINISH26.22 mi1.02 mi5518+134967+264967+265583(Top 19%)4597(Top 28%)4597(Top 191%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21
+97ft-345ft

Overall

4798

Males

4490

M45-49

4490

5K→10K

3.1 - 6.2 mi

Top 18%
×5
+79ft-138ft

Overall

5286

Males

4898

M45-49

4898

10K→15K

6.2 - 9.3 mi

Top 17%
×3
+67ft-78ft

Overall

4798

Males

4490

M45-49

4490

15K→20K

9.3 - 12.4 mi

Top 16%
×5
+106ft-86ft

Overall

4729

Males

4424

M45-49

4424

20K→HALF

12.4 - 13.1 mi

Top 15%
×2
+19ft-37ft

Overall

4296

Males

4063

M45-49

4063

HALF→25K

13.1 - 15.5 mi

Top 15%
×4
+66ft-88ft

Overall

4263

Males

3987

M45-49

3987

25K→30K

15.5 - 18.6 mi

Top 14%
×9
+181ft-148ft

Overall

4149

Males

3844

M45-49

3844

30K→20M

18.6 - 20.0 mi

Top 15%
×5
+64ft-50ft

Overall

4243

Males

3871

M45-49

3871

20M→21M

20.0 - 21.0 mi

Top 15%
×8
+106ft-24ft

Overall

4451

Males

3979

M45-49

3979

21M→35K

21.0 - 21.8 mi

Top 84%
×7
+17ft-86ft

Overall

24398

Males

14106

M45-49

14106

35K→23M

21.8 - 23.0 mi

Top 19%
×5
+23ft-63ft

Overall

5479

Males

4737

M45-49

4737

23M→24M

23.0 - 24.0 mi

Top 19%
×6
+12ft-82ft

Overall

5478

Males

4679

M45-49

4679

24M→40K

24.0 - 24.9 mi

Top 19%
×1
+6ft-20ft

Overall

5471

Males

4619

M45-49

4619

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1
+13ft-16ft

Overall

5706

Males

4722

M45-49

4722

25.2M→FINISH

25.2 - 26.2 mi

Top 19%
×2
+22ft-21ft

Overall

5583

Males

4597

M45-49

4597

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1321
Passed By
851
Net Change
-496
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5022
5K → 10K129200-108#5022#5130
10K → 15K18255+127#5130#5003
15K → 20K15447+107#5003#4896
20K → HALF446+38#4896#4858
HALF → 25K14717+130#4858#4728
25K → 30K18243+139#4728#4589
30K → 20M9926+73#4589#4516
20M → 21M8133+48#4516#4468
21M → 35K2200-1127#4468#5595
35K → 23M7947+32#5595#5563
23M → 24M7750+27#5563#5536
24M → 40K5449+5#5536#5531
40K → 25.2M24240#5531#5531
25.2M → FINISH6754+13#5531#5518
TOTALS1321851-496
📊

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