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BOSTON MARATHON 2026

Mark Lamson

Bib: 26661β€’M

MA

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0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M50-54)
#0 / 1868
Race Day Weather
51Β°/41Β°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
30:49
3.11 mi
Rank: #25717
Start β†’ 5K
30:49 | 9:56/mi
10K
1:01:54
6.21 mi
Rank: #25814 (-97)
5K β†’ 10K
31:05 | 10:01/mi
15K
1:33:49
9.32 mi
Rank: #25988 (-174)
10K β†’ 15K
31:55 | 10:17/mi
20K
2:04:19
12.43 mi
Rank: #25597 (+391)
15K β†’ 20K
30:30 | 9:50/mi
HALF
2:11:05
13.11 mi
Rank: #25590 (+7)
20K β†’ HALF
6:46 | 9:56/mi
25K
2:37:20
15.53 mi
Rank: #25701 (-111)
HALF β†’ 25K
26:15 | 10:50/mi
30K
3:12:29
18.64 mi
Rank: #25743 (-42)
25K β†’ 30K
35:09 | 11:19/mi
20M
3:28:07
20.00 mi
Rank: #25758 (-15)
30K β†’ 20M
15:38 | 11:31/mi
21M
3:40:55
21.00 mi
Rank: #25798 (-40)
20M β†’ 21M
12:48 | 12:48/mi
35K
3:49:50
21.75 mi
Rank: #25838 (-40)
21M β†’ 35K
8:55 | 11:56/mi
23M
4:04:13
23.00 mi
Rank: #25845 (-7)
35K β†’ 23M
14:23 | 11:30/mi
24M
4:16:58
24.00 mi
Rank: #25965 (-120)
23M β†’ 24M
12:45 | 12:45/mi
40K
4:25:57
24.85 mi
Rank: #25860 (+105)
24M β†’ 40K
8:59 | 10:31/mi
25.2M
4:29:56
25.20 mi
Rank: #25829 (+31)
40K β†’ 25.2M
3:59 | 11:34/mi
FINISH
4:40:33
26.22 mi
Rank: #25804 (+25)
25.2M β†’ FINISH
10:37 | 10:26/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:11:05
Pace10:00 /mi
2nd Half
Distance13.11 mi
Time2:29:28
Pace11:25 /mi
πŸ“ŠPositive Split: 14.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:38:5830:499:5630:49
9:56
-
10K
6.21 mi11:10:031:01:549:5831:05
10:01
+0:05
15K
9.32 mi11:41:581:33:4910:0431:55
10:17
+0:16
20K
12.43 mi12:12:282:04:1910:0130:30
9:50
-0:27
HALF
13.11 mi12:19:142:11:0510:006:46
9:56
+0:06
25K
15.53 mi12:45:292:37:2010:0826:15
10:50
+0:54
30K
18.64 mi13:20:383:12:2910:2035:09
11:19
+0:29
20M
20.00 mi13:36:163:28:0710:2515:38
11:31
+0:12
21M
21.00 mi13:49:043:40:5510:3212:48
12:48
+1:17
35K
21.75 mi13:57:593:49:5010:358:55
11:56
-0:52
23M
23.00 mi14:12:224:04:1310:3814:23
11:30
-0:26
24M
24.00 mi14:25:074:16:5810:4312:45
12:45
+1:15
40K
24.85 mi14:34:064:25:5710:438:59
10:31
-2:14
25.2M
25.20 mi14:38:054:29:5610:433:59
11:34
+1:03
FINISH
26.22 mi14:48:424:40:3310:4310:37
10:26
-1:08

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

πŸ“ˆPace 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

9:50 /mi

Average Pace

10:42 /mi

Slowest Pace

12:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

2:11:05

47% of race

Time at Steady Pace

45:51

16% of race

Time at Slower Pace

1:43:37

37% of race

Average Pace: 10:42 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi10:38:5830:499:5630:49
9:56
#25717
10K
6.21 mi11:10:031:01:549:5831:05
10:01
#25814
15K
9.32 mi11:41:581:33:4910:0431:55
10:17
#25988
20K
12.43 mi12:12:282:04:1910:0130:30
9:50
#25597
HALF
13.11 mi12:19:142:11:0510:006:46
9:56
#25590
25K
15.53 mi12:45:292:37:2010:0826:15
10:50
#25701
30K
18.64 mi13:20:383:12:2910:2035:09
11:19
#25743
20M
20.00 mi13:36:163:28:0710:2515:38
11:31
#25758
21M
21.00 mi13:49:043:40:5510:3212:48
12:48
#25798
35K
21.75 mi13:57:593:49:5010:358:55
11:56
#25838
23M
23.00 mi14:12:224:04:1310:3814:23
11:30
#25845
24M
24.00 mi14:25:074:16:5810:4312:45
12:45
#25965
40K
24.85 mi14:34:064:25:5710:438:59
10:31
#25860
25.2M
25.20 mi14:38:054:29:5610:433:59
11:34
#25829
FINISH
26.22 mi14:48:424:40:3310:4310:37
10:26
#25804
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi25717150661506626271(Top 91%)15289(Top 94%)15289(Top 818%)
10K6.21 mi3.10 mi25814-9715091-2515091-2525853(Top 89%)15108(Top 92%)15108(Top 809%)
15K9.32 mi3.11 mi25988-17415174-8315174-8326271(Top 91%)15289(Top 94%)15289(Top 818%)
20K12.43 mi3.11 mi25597+39114999+17514999+17524602(Top 85%)14511(Top 89%)14511(Top 777%)
HALF13.11 mi0.68 mi25590+714994+514994+525495(Top 88%)14914(Top 91%)14914(Top 798%)
25K15.53 mi2.42 mi25701-11115037-4315037-4326049(Top 90%)15125(Top 93%)15125(Top 810%)
30K18.64 mi3.11 mi25743-4215029+815029+825867(Top 89%)14947(Top 91%)14947(Top 800%)
20M20.00 mi1.36 mi25758-1515014+1515014+1525733(Top 89%)14798(Top 91%)14798(Top 792%)
21M21.00 mi1.00 mi25798-4015005+915005+926141(Top 90%)14956(Top 92%)14956(Top 801%)
35K21.75 mi0.75 mi25838-4015026-2115026-2126642(Top 92%)15165(Top 93%)15165(Top 812%)
23M23.00 mi1.25 mi25845-715009+1715009+1725422(Top 88%)14547(Top 89%)14547(Top 779%)
24M24.00 mi1.00 mi25965-12015053-4415053-4427422(Top 94%)15499(Top 95%)15499(Top 830%)
40K24.85 mi0.85 mi25860+10514993+6014993+6023224(Top 80%)13404(Top 82%)13404(Top 718%)
25.2M25.20 mi0.35 mi25829+3114973+2014973+2023591(Top 81%)13593(Top 83%)13593(Top 728%)
FINISH26.22 mi1.02 mi25804+2514946+2714946+2724893(Top 86%)14217(Top 87%)14217(Top 761%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
Γ—21
+97ft-345ft

Overall

26271

Males

15289

M50-54

15289

5K→10K

3.1 - 6.2 mi

Top 89%
Γ—5
+79ft-138ft

Overall

25853

Males

15108

M50-54

15108

10K→15K

6.2 - 9.3 mi

Top 91%
Γ—3
+67ft-78ft

Overall

26271

Males

15289

M50-54

15289

15K→20K

9.3 - 12.4 mi

Top 85%
Γ—5
+106ft-86ft

Overall

24602

Males

14511

M50-54

14511

20K→HALF

12.4 - 13.1 mi

Top 88%
Γ—2
+19ft-37ft

Overall

25495

Males

14914

M50-54

14914

HALF→25K

13.1 - 15.5 mi

Top 90%
Γ—4
+66ft-88ft

Overall

26049

Males

15125

M50-54

15125

25K→30K

15.5 - 18.6 mi

Top 89%
Γ—9
+181ft-148ft

Overall

25867

Males

14947

M50-54

14947

30K→20M

18.6 - 20.0 mi

Top 89%
Γ—5
+64ft-50ft

Overall

25733

Males

14798

M50-54

14798

20M→21M

20.0 - 21.0 mi

Top 90%
Γ—8
+106ft-24ft

Overall

26141

Males

14956

M50-54

14956

21M→35K

21.0 - 21.8 mi

Top 92%
Γ—7
+17ft-86ft

Overall

26642

Males

15165

M50-54

15165

35K→23M

21.8 - 23.0 mi

Top 88%
Γ—5
+23ft-63ft

Overall

25422

Males

14547

M50-54

14547

23M→24M

23.0 - 24.0 mi

Top 94%
Γ—6
+12ft-82ft

Overall

27422

Males

15499

M50-54

15499

24M→40K

24.0 - 24.9 mi

Top 80%
Γ—1
+6ft-20ft

Overall

23224

Males

13404

M50-54

13404

40K→25.2M

24.9 - 25.2 mi

Top 81%
Γ—1
+13ft-16ft

Overall

23591

Males

13593

M50-54

13593

25.2M→FINISH

25.2 - 26.2 mi

Top 86%
Γ—2
+22ft-21ft

Overall

24893

Males

14217

M50-54

14217

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Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1189
Passed By
1276
Net Change
-87
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#25717
5K β†’ 10K154251-97#25717#25814
10K β†’ 15K59233-174#25814#25988
15K β†’ 20K3976+391#25988#25597
20K β†’ HALF2619+7#25597#25590
HALF β†’ 25K61172-111#25590#25701
25K β†’ 30K117159-42#25701#25743
30K β†’ 20M6075-15#25743#25758
20M β†’ 21M4484-40#25758#25798
21M β†’ 35K2363-40#25798#25838
35K β†’ 23M5259-7#25838#25845
23M β†’ 24M12132-120#25845#25965
24M β†’ 40K1061+105#25965#25860
40K β†’ 25.2M376+31#25860#25829
25.2M β†’ FINISH4116+25#25829#25804
TOTALS11891276-87

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πŸ“Š

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace 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