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BOSTON MARATHON 2026

Jonathan Lessem

Bib: 18424•M

MD

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M55-59)
#0 / 1491
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
24:54
3.11 mi
Rank: #17048
Start → 5K
24:54 | 8:01/mi
10K
50:40
6.21 mi
Rank: #18121 (-1073)
5K → 10K
25:46 | 8:18/mi
15K
1:16:34
9.32 mi
Rank: #18486 (-365)
10K → 15K
25:54 | 8:21/mi
20K
1:42:12
12.43 mi
Rank: #18306 (+180)
15K → 20K
25:38 | 8:16/mi
HALF
1:47:43
13.11 mi
Rank: #18267 (+39)
20K → HALF
5:31 | 8:06/mi
25K
2:07:48
15.53 mi
Rank: #18102 (+165)
HALF → 25K
20:05 | 8:17/mi
30K
2:34:33
18.64 mi
Rank: #17956 (+146)
25K → 30K
26:45 | 8:37/mi
20M
2:46:36
20.00 mi
Rank: #17954 (+2)
30K → 20M
12:03 | 8:53/mi
21M
2:55:29
21.00 mi
Rank: #17819 (+135)
20M → 21M
8:53 | 8:53/mi
35K
3:01:41
21.75 mi
Rank: #17742 (+77)
21M → 35K
6:12 | 8:18/mi
23M
3:12:50
23.00 mi
Rank: #17732 (+10)
35K → 23M
11:09 | 8:55/mi
24M
3:21:31
24.00 mi
Rank: #17742 (-10)
23M → 24M
8:41 | 8:41/mi
40K
3:29:03
24.85 mi
Rank: #17719 (+23)
24M → 40K
7:32 | 8:49/mi
25.2M
3:32:34
25.20 mi
Rank: #17752 (-33)
40K → 25.2M
3:31 | 10:12/mi
FINISH
3:41:13
26.22 mi
Rank: #17753 (-1)
25.2M → FINISH
8:39 | 8:30/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:47:43
Pace8:14 /mi
2nd Half
Distance13.11 mi
Time1:53:30
Pace8:40 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:07:0924:548:0124:54
8:01
-
10K
6.21 mi11:32:5550:408:1025:46
8:18
+0:17
15K
9.32 mi11:58:491:16:348:1325:54
8:21
+0:03
20K
12.43 mi12:24:271:42:128:1425:38
8:16
-0:05
HALF
13.11 mi12:29:581:47:438:145:31
8:06
-0:10
25K
15.53 mi12:50:032:07:488:1420:05
8:17
+0:11
30K
18.64 mi13:16:482:34:338:1826:45
8:37
+0:20
20M
20.00 mi13:28:512:46:368:2012:03
8:53
+0:16
21M
21.00 mi13:37:442:55:298:228:53
8:53
0:00
35K
21.75 mi13:43:563:01:418:226:12
8:18
-0:35
23M
23.00 mi13:55:053:12:508:2411:09
8:55
+0:37
24M
24.00 mi14:03:463:21:318:248:41
8:41
-0:14
40K
24.85 mi14:11:183:29:038:257:32
8:49
+0:08
25.2M
25.20 mi14:14:493:32:348:273:31
10:12
+1:23
FINISH
26.22 mi14:23:283:41:138:278:39
8:30
-1:42

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

8:01 /mi

Average Pace

8:27 /mi

Slowest Pace

10:12 /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

30:25

14% of race

Time at Steady Pace

2:27:40

67% of race

Time at Slower Pace

43:08

19% of race

Average Pace: 8:26 /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 mi11:07:0924:548:0124:54
8:01
#17048
10K
6.21 mi11:32:5550:408:1025:46
8:18
#18121
15K
9.32 mi11:58:491:16:348:1325:54
8:21
#18486
20K
12.43 mi12:24:271:42:128:1425:38
8:16
#18306
HALF
13.11 mi12:29:581:47:438:145:31
8:06
#18267
25K
15.53 mi12:50:032:07:488:1420:05
8:17
#18102
30K
18.64 mi13:16:482:34:338:1826:45
8:37
#17956
20M
20.00 mi13:28:512:46:368:2012:03
8:53
#17954
21M
21.00 mi13:37:442:55:298:228:53
8:53
#17819
35K
21.75 mi13:43:563:01:418:226:12
8:18
#17742
23M
23.00 mi13:55:053:12:508:2411:09
8:55
#17732
24M
24.00 mi14:03:463:21:318:248:41
8:41
#17742
40K
24.85 mi14:11:183:29:038:257:32
8:49
#17719
25.2M
25.20 mi14:14:493:32:348:273:31
10:12
#17752
FINISH
26.22 mi14:23:283:41:138:278:39
8:30
#17753
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi17048110291102919186(Top 66%)11960(Top 73%)11960(Top 802%)
10K6.21 mi3.10 mi18121-107311473-44411473-44419126(Top 66%)11951(Top 73%)11951(Top 802%)
15K9.32 mi3.11 mi18486-36511652-17911652-17919186(Top 66%)11960(Top 73%)11960(Top 802%)
20K12.43 mi3.11 mi18306+18011573+7911573+7917803(Top 61%)11327(Top 69%)11327(Top 760%)
HALF13.11 mi0.68 mi18267+3911552+2111552+2117694(Top 61%)11312(Top 69%)11312(Top 759%)
25K15.53 mi2.42 mi18102+16511474+7811474+7817312(Top 60%)11070(Top 68%)11070(Top 742%)
30K18.64 mi3.11 mi17956+14611366+10811366+10817529(Top 60%)11050(Top 68%)11050(Top 741%)
20M20.00 mi1.36 mi17954+211347+1911347+1918298(Top 63%)11294(Top 69%)11294(Top 757%)
21M21.00 mi1.00 mi17819+13511274+7311274+7315458(Top 53%)10020(Top 61%)10020(Top 672%)
35K21.75 mi0.75 mi17742+7711226+4811226+4816333(Top 56%)10341(Top 63%)10341(Top 694%)
23M23.00 mi1.25 mi17732+1011191+3511191+3518032(Top 62%)10989(Top 67%)10989(Top 737%)
24M24.00 mi1.00 mi17742-1011181+1011181+1017901(Top 62%)10897(Top 67%)10897(Top 731%)
40K24.85 mi0.85 mi17719+2311155+2611155+2617428(Top 60%)10620(Top 65%)10620(Top 712%)
25.2M25.20 mi0.35 mi17752-3311160-511160-520050(Top 69%)11870(Top 73%)11870(Top 796%)
FINISH26.22 mi1.02 mi17753-111133+2711133+2718081(Top 62%)10923(Top 67%)10923(Top 733%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21
+97ft-345ft

Overall

19186

Males

11960

M55-59

11960

5K→10K

3.1 - 6.2 mi

Top 66%
×5
+79ft-138ft

Overall

19126

Males

11951

M55-59

11951

10K→15K

6.2 - 9.3 mi

Top 66%
×3
+67ft-78ft

Overall

19186

Males

11960

M55-59

11960

15K→20K

9.3 - 12.4 mi

Top 61%
×5
+106ft-86ft

Overall

17803

Males

11327

M55-59

11327

20K→HALF

12.4 - 13.1 mi

Top 61%
×2
+19ft-37ft

Overall

17694

Males

11312

M55-59

11312

HALF→25K

13.1 - 15.5 mi

Top 60%
×4
+66ft-88ft

Overall

17312

Males

11070

M55-59

11070

25K→30K

15.5 - 18.6 mi

Top 60%
×9
+181ft-148ft

Overall

17529

Males

11050

M55-59

11050

30K→20M

18.6 - 20.0 mi

Top 63%
×5
+64ft-50ft

Overall

18298

Males

11294

M55-59

11294

20M→21M

20.0 - 21.0 mi

Top 53%
×8
+106ft-24ft

Overall

15458

Males

10020

M55-59

10020

21M→35K

21.0 - 21.8 mi

Top 56%
×7
+17ft-86ft

Overall

16333

Males

10341

M55-59

10341

35K→23M

21.8 - 23.0 mi

Top 62%
×5
+23ft-63ft

Overall

18032

Males

10989

M55-59

10989

23M→24M

23.0 - 24.0 mi

Top 62%
×6
+12ft-82ft

Overall

17901

Males

10897

M55-59

10897

24M→40K

24.0 - 24.9 mi

Top 60%
×1
+6ft-20ft

Overall

17428

Males

10620

M55-59

10620

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1
+13ft-16ft

Overall

20050

Males

11870

M55-59

11870

25.2M→FINISH

25.2 - 26.2 mi

Top 62%
×2
+22ft-21ft

Overall

18081

Males

10923

M55-59

10923

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1543
Passed By
2248
Net Change
-705
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17048
5K → 10K351108-1073#17048#18121
10K → 15K74439-365#18121#18486
15K → 20K25474+180#18486#18306
20K → HALF5213+39#18306#18267
HALF → 25K20136+165#18267#18102
25K → 30K251105+146#18102#17956
30K → 20M9997+2#17956#17954
20M → 21M15823+135#17954#17819
21M → 35K9922+77#17819#17742
35K → 23M9282+10#17742#17732
23M → 24M5868-10#17732#17742
24M → 40K8663+23#17742#17719
40K → 25.2M2154-33#17719#17752
25.2M → FINISH6364-1#17752#17753
TOTALS15432248-705
📊

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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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing