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BOSTON MARATHON 2026

Joseph Lasceski

Bib: 12333•M

MI

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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
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
23:13
3.11 mi
Rank: #12539
Start → 5K
23:13 | 7:29/mi
10K
45:45
6.21 mi
Rank: #11638 (+901)
5K → 10K
22:32 | 7:16/mi
15K
1:09:17
9.32 mi
Rank: #12216 (-578)
10K → 15K
23:32 | 7:35/mi
20K
1:39:31
12.43 mi
Rank: #16849 (-4633)
15K → 20K
30:14 | 9:44/mi
HALF
1:44:53
13.11 mi
Rank: #16808 (+41)
20K → HALF
5:22 | 7:53/mi
25K
2:04:01
15.53 mi
Rank: #16432 (+376)
HALF → 25K
19:08 | 7:54/mi
30K
2:32:21
18.64 mi
Rank: #17202 (-770)
25K → 30K
28:20 | 9:08/mi
20M
2:45:02
20.00 mi
Rank: #17483 (-281)
30K → 20M
12:41 | 9:21/mi
21M
2:54:36
21.00 mi
Rank: #17541 (-58)
20M → 21M
9:34 | 9:34/mi
35K
3:01:48
21.75 mi
Rank: #17782 (-241)
21M → 35K
7:12 | 9:38/mi
23M
3:15:29
23.00 mi
Rank: #18438 (-656)
35K → 23M
13:41 | 10:57/mi
24M
3:24:34
24.00 mi
Rank: #18514 (-76)
23M → 24M
9:05 | 9:05/mi
40K
3:31:52
24.85 mi
Rank: #18406 (+108)
24M → 40K
7:18 | 8:33/mi
25.2M
3:34:48
25.20 mi
Rank: #18307 (+99)
40K → 25.2M
2:56 | 8:31/mi
FINISH
3:43:08
26.22 mi
Rank: #18209 (+98)
25.2M → FINISH
8:20 | 8:11/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:44:53
Pace8:01 /mi
2nd Half
Distance13.11 mi
Time1:58:15
Pace9:02 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2923:137:2923:13
7:29
-
10K
6.21 mi11:14:0145:457:2222:32
7:16
-0:13
15K
9.32 mi11:37:331:09:177:2723:32
7:35
+0:19
20K
12.43 mi12:07:471:39:318:0130:14
9:44
+2:09
HALF
13.11 mi12:13:091:44:538:015:22
7:53
-1:51
25K
15.53 mi12:32:172:04:018:0019:08
7:54
+0:01
30K
18.64 mi13:00:372:32:218:1128:20
9:08
+1:14
20M
20.00 mi13:13:182:45:028:1612:41
9:21
+0:13
21M
21.00 mi13:22:522:54:368:199:34
9:34
+0:13
35K
21.75 mi13:30:043:01:488:227:12
9:38
+0:04
23M
23.00 mi13:43:453:15:298:3013:41
10:57
+1:19
24M
24.00 mi13:52:503:24:348:329:05
9:05
-1:52
40K
24.85 mi14:00:083:31:528:327:18
8:33
-0:32
25.2M
25.20 mi14:03:043:34:488:322:56
8:31
-0:02
FINISH
26.22 mi14:11:243:43:088:318:20
8:11
-0:20

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

7:16 /mi

Average Pace

8:31 /mi

Slowest Pace

10:57 /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

1:33:47

42% of race

Time at Steady Pace

18:34

8% of race

Time at Slower Pace

1:50:47

50% of race

Average Pace: 8:31 /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 mi10:51:2923:137:2923:13
7:29
#12539
10K
6.21 mi11:14:0145:457:2222:32
7:16
#11638
15K
9.32 mi11:37:331:09:177:2723:32
7:35
#12216
20K
12.43 mi12:07:471:39:318:0130:14
9:44
#16849
HALF
13.11 mi12:13:091:44:538:015:22
7:53
#16808
25K
15.53 mi12:32:172:04:018:0019:08
7:54
#16432
30K
18.64 mi13:00:372:32:218:1128:20
9:08
#17202
20M
20.00 mi13:13:182:45:028:1612:41
9:21
#17483
21M
21.00 mi13:22:522:54:368:199:34
9:34
#17541
35K
21.75 mi13:30:043:01:488:227:12
9:38
#17782
23M
23.00 mi13:43:453:15:298:3013:41
10:57
#18438
24M
24.00 mi13:52:503:24:348:329:05
9:05
#18514
40K
24.85 mi14:00:083:31:528:327:18
8:33
#18406
25.2M
25.20 mi14:03:043:34:488:322:56
8:31
#18307
FINISH
26.22 mi14:11:243:43:088:318:20
8:11
#18209
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 mi125399276927613456(Top 46%)9565(Top 59%)9565(Top 512%)
10K6.21 mi3.10 mi11638+9018858+4188858+41810717(Top 37%)8423(Top 52%)8423(Top 451%)
15K9.32 mi3.11 mi12216-5789083-2259083-22513456(Top 46%)9565(Top 59%)9565(Top 512%)
20K12.43 mi3.11 mi16849-463310931-184810931-184824372(Top 84%)14408(Top 88%)14408(Top 771%)
HALF13.11 mi0.68 mi16808+4110913+1810913+1816125(Top 56%)10663(Top 65%)10663(Top 571%)
25K15.53 mi2.42 mi16432+37610753+16010753+16014515(Top 50%)9883(Top 60%)9883(Top 529%)
30K18.64 mi3.11 mi17202-77011053-30011053-30020150(Top 69%)12257(Top 75%)12257(Top 656%)
20M20.00 mi1.36 mi17483-28111161-10811161-10820399(Top 70%)12295(Top 75%)12295(Top 658%)
21M21.00 mi1.00 mi17541-5811162-111162-118770(Top 65%)11496(Top 70%)11496(Top 615%)
35K21.75 mi0.75 mi17782-24111243-8111243-8122108(Top 76%)13009(Top 80%)13009(Top 696%)
23M23.00 mi1.25 mi18438-65611511-26811511-26824338(Top 84%)14026(Top 86%)14026(Top 751%)
24M24.00 mi1.00 mi18514-7611524-1311524-1319787(Top 68%)11767(Top 72%)11767(Top 630%)
40K24.85 mi0.85 mi18406+10811460+6411460+6415909(Top 55%)9943(Top 61%)9943(Top 532%)
25.2M25.20 mi0.35 mi18307+9911405+5511405+5511674(Top 40%)7969(Top 49%)7969(Top 427%)
FINISH26.22 mi1.02 mi18209+9811349+5611349+5616281(Top 56%)10123(Top 62%)10123(Top 542%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21
+97ft-345ft

Overall

13456

Males

9565

M50-54

9565

5K→10K

3.1 - 6.2 mi

Top 37%
×5
+79ft-138ft

Overall

10717

Males

8423

M50-54

8423

10K→15K

6.2 - 9.3 mi

Top 46%
×3
+67ft-78ft

Overall

13456

Males

9565

M50-54

9565

15K→20K

9.3 - 12.4 mi

Top 84%
×5
+106ft-86ft

Overall

24372

Males

14408

M50-54

14408

20K→HALF

12.4 - 13.1 mi

Top 56%
×2
+19ft-37ft

Overall

16125

Males

10663

M50-54

10663

HALF→25K

13.1 - 15.5 mi

Top 50%
×4
+66ft-88ft

Overall

14515

Males

9883

M50-54

9883

25K→30K

15.5 - 18.6 mi

Top 69%
×9
+181ft-148ft

Overall

20150

Males

12257

M50-54

12257

30K→20M

18.6 - 20.0 mi

Top 70%
×5
+64ft-50ft

Overall

20399

Males

12295

M50-54

12295

20M→21M

20.0 - 21.0 mi

Top 65%
×8
+106ft-24ft

Overall

18770

Males

11496

M50-54

11496

21M→35K

21.0 - 21.8 mi

Top 76%
×7
+17ft-86ft

Overall

22108

Males

13009

M50-54

13009

35K→23M

21.8 - 23.0 mi

Top 84%
×5
+23ft-63ft

Overall

24338

Males

14026

M50-54

14026

23M→24M

23.0 - 24.0 mi

Top 68%
×6
+12ft-82ft

Overall

19787

Males

11767

M50-54

11767

24M→40K

24.0 - 24.9 mi

Top 55%
×1
+6ft-20ft

Overall

15909

Males

9943

M50-54

9943

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1
+13ft-16ft

Overall

11674

Males

7969

M50-54

7969

25.2M→FINISH

25.2 - 26.2 mi

Top 56%
×2
+22ft-21ft

Overall

16281

Males

10123

M50-54

10123

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Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2017
Passed By
7687
Net Change
-5670
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12539
5K → 10K94847+901#12539#11638
10K → 15K54632-578#11638#12216
15K → 20K04633-4633#12216#16849
20K → HALF5413+41#16849#16808
HALF → 25K3859+376#16808#16432
25K → 30K60830-770#16432#17202
30K → 20M30311-281#17202#17483
20M → 21M61119-58#17483#17541
21M → 35K22263-241#17541#17782
35K → 23M16672-656#17782#18438
23M → 24M42118-76#18438#18514
24M → 40K12113+108#18514#18406
40K → 25.2M990+99#18406#18307
25.2M → FINISH12527+98#18307#18209
TOTALS20177687-5670

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📊

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