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BOSTON MARATHON 2026

Jan Lennertz

Bib: 11365•M

NY

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 18%
Gender (Male)
#0 / 16340
Top 30%
Masters (Masters Men)
#0 / 10617
Top 15%
Age Group (M45-49)
#0 / 2413
Top 20%
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
20:29
3.11 mi
Rank: #4931
Start → 5K
20:29 | 6:36/mi
10K
41:06
6.21 mi
Rank: #5104 (-173)
5K → 10K
20:37 | 6:39/mi
15K
1:02:04
9.32 mi
Rank: #5444 (-340)
10K → 15K
20:58 | 6:45/mi
20K
1:23:12
12.43 mi
Rank: #5591 (-147)
15K → 20K
21:08 | 6:49/mi
HALF
1:27:44
13.11 mi
Rank: #5586 (+5)
20K → HALF
4:32 | 6:40/mi
25K
1:44:06
15.53 mi
Rank: #5503 (+83)
HALF → 25K
16:22 | 6:45/mi
30K
2:05:37
18.64 mi
Rank: #5440 (+63)
25K → 30K
21:31 | 6:56/mi
20M
2:15:04
20.00 mi
Rank: #5408 (+32)
30K → 20M
9:27 | 6:58/mi
21M
2:22:21
21.00 mi
Rank: #5368 (+40)
20M → 21M
7:17 | 7:17/mi
35K
2:27:24
21.75 mi
Rank: #5347 (+21)
21M → 35K
5:03 | 6:46/mi
23M
2:36:10
23.00 mi
Rank: #5329 (+18)
35K → 23M
8:46 | 7:01/mi
24M
2:43:03
24.00 mi
Rank: #5325 (+4)
23M → 24M
6:53 | 6:53/mi
40K
2:49:03
24.85 mi
Rank: #5318 (+7)
24M → 40K
6:00 | 7:02/mi
25.2M
2:51:39
25.20 mi
Rank: #5322 (-4)
40K → 25.2M
2:36 | 7:33/mi
FINISH
2:58:38
26.22 mi
Rank: #5342 (-20)
25.2M → FINISH
6:59 | 6:52/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:27:44
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:30:54
Pace6:57 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:38:3920:296:3620:29
6:36
-
10K
6.21 mi10:59:1641:066:3720:37
6:39
+0:03
15K
9.32 mi11:20:141:02:046:4020:58
6:45
+0:06
20K
12.43 mi11:41:221:23:126:4221:08
6:49
+0:04
HALF
13.11 mi11:45:541:27:446:424:32
6:40
-0:09
25K
15.53 mi12:02:161:44:066:4316:22
6:45
+0:05
30K
18.64 mi12:23:472:05:376:4521:31
6:56
+0:11
20M
20.00 mi12:33:142:15:046:469:27
6:58
+0:02
21M
21.00 mi12:40:312:22:216:477:17
7:17
+0:19
35K
21.75 mi12:45:342:27:246:475:03
6:46
-0:31
23M
23.00 mi12:54:202:36:106:488:46
7:01
+0:15
24M
24.00 mi13:01:132:43:036:486:53
6:53
-0:08
40K
24.85 mi13:07:132:49:036:496:00
7:02
+0:09
25.2M
25.20 mi13:09:492:51:396:492:36
7:33
+0:31
FINISH
26.22 mi13:16:482:58:386:506:59
6:52
-0:41

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

6:36 /mi

Average Pace

6:49 /mi

Slowest Pace

7:33 /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

2:48:45

94% of race

Time at Steady Pace

9:53

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:38:3920:296:3620:29
6:36
#4931
10K
6.21 mi10:59:1641:066:3720:37
6:39
#5104
15K
9.32 mi11:20:141:02:046:4020:58
6:45
#5444
20K
12.43 mi11:41:221:23:126:4221:08
6:49
#5591
HALF
13.11 mi11:45:541:27:446:424:32
6:40
#5586
25K
15.53 mi12:02:161:44:066:4316:22
6:45
#5503
30K
18.64 mi12:23:472:05:376:4521:31
6:56
#5440
20M
20.00 mi12:33:142:15:046:469:27
6:58
#5408
21M
21.00 mi12:40:312:22:216:477:17
7:17
#5368
35K
21.75 mi12:45:342:27:246:475:03
6:46
#5347
23M
23.00 mi12:54:202:36:106:488:46
7:01
#5329
24M
24.00 mi13:01:132:43:036:486:53
6:53
#5325
40K
24.85 mi13:07:132:49:036:496:00
7:02
#5318
25.2M
25.20 mi13:09:492:51:396:492:36
7:33
#5322
FINISH
26.22 mi13:16:482:58:386:506:59
6:52
#5342
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 mi4931460846086283(Top 22%)5643(Top 35%)5643(Top 234%)
10K6.21 mi3.10 mi5104-1734760-1524760-1525341(Top 18%)4943(Top 30%)4943(Top 205%)
15K9.32 mi3.11 mi5444-3405042-2825042-2826283(Top 22%)5643(Top 35%)5643(Top 234%)
20K12.43 mi3.11 mi5591-1475155-1135155-1136207(Top 21%)5564(Top 34%)5564(Top 231%)
HALF13.11 mi0.68 mi5586+55150+55150+55676(Top 20%)5154(Top 32%)5154(Top 214%)
25K15.53 mi2.42 mi5503+835064+865064+865320(Top 18%)4847(Top 30%)4847(Top 201%)
30K18.64 mi3.11 mi5440+634996+684996+685345(Top 18%)4800(Top 29%)4800(Top 199%)
20M20.00 mi1.36 mi5408+324963+334963+335249(Top 18%)4685(Top 29%)4685(Top 194%)
21M21.00 mi1.00 mi5368+404916+474916+475146(Top 18%)4510(Top 28%)4510(Top 187%)
35K21.75 mi0.75 mi5347+214892+244892+245298(Top 18%)4662(Top 29%)4662(Top 193%)
23M23.00 mi1.25 mi5329+184864+284864+285477(Top 19%)4735(Top 29%)4735(Top 196%)
24M24.00 mi1.00 mi5325+44848+164848+165675(Top 20%)4808(Top 29%)4808(Top 199%)
40K24.85 mi0.85 mi5318+74830+184830+185585(Top 19%)4694(Top 29%)4694(Top 195%)
25.2M25.20 mi0.35 mi5322-44828+24828+25448(Top 19%)4553(Top 28%)4553(Top 189%)
FINISH26.22 mi1.02 mi5342-204825+34825+36461(Top 22%)5158(Top 32%)5158(Top 214%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21
+97ft-345ft

Overall

6283

Males

5643

M45-49

5643

5K→10K

3.1 - 6.2 mi

Top 18%
×5
+79ft-138ft

Overall

5341

Males

4943

M45-49

4943

10K→15K

6.2 - 9.3 mi

Top 22%
×3
+67ft-78ft

Overall

6283

Males

5643

M45-49

5643

15K→20K

9.3 - 12.4 mi

Top 21%
×5
+106ft-86ft

Overall

6207

Males

5564

M45-49

5564

20K→HALF

12.4 - 13.1 mi

Top 20%
×2
+19ft-37ft

Overall

5676

Males

5154

M45-49

5154

HALF→25K

13.1 - 15.5 mi

Top 18%
×4
+66ft-88ft

Overall

5320

Males

4847

M45-49

4847

25K→30K

15.5 - 18.6 mi

Top 18%
×9
+181ft-148ft

Overall

5345

Males

4800

M45-49

4800

30K→20M

18.6 - 20.0 mi

Top 18%
×5
+64ft-50ft

Overall

5249

Males

4685

M45-49

4685

20M→21M

20.0 - 21.0 mi

Top 18%
×8
+106ft-24ft

Overall

5146

Males

4510

M45-49

4510

21M→35K

21.0 - 21.8 mi

Top 18%
×7
+17ft-86ft

Overall

5298

Males

4662

M45-49

4662

35K→23M

21.8 - 23.0 mi

Top 19%
×5
+23ft-63ft

Overall

5477

Males

4735

M45-49

4735

23M→24M

23.0 - 24.0 mi

Top 20%
×6
+12ft-82ft

Overall

5675

Males

4808

M45-49

4808

24M→40K

24.0 - 24.9 mi

Top 19%
×1
+6ft-20ft

Overall

5585

Males

4694

M45-49

4694

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1
+13ft-16ft

Overall

5448

Males

4553

M45-49

4553

25.2M→FINISH

25.2 - 26.2 mi

Top 22%
×2
+22ft-21ft

Overall

6461

Males

5158

M45-49

5158

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1020
Passed By
1431
Net Change
-411
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4931
5K → 10K103276-173#4931#5104
10K → 15K35375-340#5104#5444
15K → 20K65212-147#5444#5591
20K → HALF2621+5#5591#5586
HALF → 25K12239+83#5586#5503
25K → 30K169106+63#5503#5440
30K → 20M8250+32#5440#5408
20M → 21M8040+40#5408#5368
21M → 35K5130+21#5368#5347
35K → 23M8567+18#5347#5329
23M → 24M5854+4#5329#5325
24M → 40K6356+7#5325#5318
40K → 25.2M2731-4#5318#5322
25.2M → FINISH5474-20#5322#5342
TOTALS10201431-411
📊

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