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BOSTON MARATHON 2026

Justin Lew

Bib: 10178•M

UT

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 21%
Gender (Male)
#0 / 16340
Top 33%
Masters (Masters Men)
#0 / 10617
Top 19%
Age Group (M45-49)
#0 / 2413
Top 26%
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
21:27
3.11 mi
Rank: #7768
Start → 5K
21:27 | 6:55/mi
10K
42:58
6.21 mi
Rank: #7941 (-173)
5K → 10K
21:31 | 6:56/mi
15K
1:04:13
9.32 mi
Rank: #7718
10K → 15K
21:15 | 6:51/mi
20K
1:25:46
12.43 mi
Rank: #7599
15K → 20K
21:33 | 6:57/mi
HALF
1:30:22
13.11 mi
Rank: #7544
20K → HALF
4:36 | 6:45/mi
25K
1:47:11
15.53 mi
Rank: #7402
HALF → 25K
16:49 | 6:57/mi
30K
2:08:49
18.64 mi
Rank: #7045
25K → 30K
21:38 | 6:58/mi
20M
2:18:08
20.00 mi
Rank: #6806
30K → 20M
9:19 | 6:52/mi
21M
2:25:33
21.00 mi
Rank: #6730
20M → 21M
7:25 | 7:25/mi
35K
2:30:36
21.75 mi
Rank: #6654
21M → 35K
5:03 | 6:46/mi
23M
2:39:27
23.00 mi
Rank: #6555
35K → 23M
8:51 | 7:05/mi
24M
2:46:12
24.00 mi
Rank: #6443
23M → 24M
6:45 | 6:45/mi
40K
2:52:06
24.85 mi
Rank: #6353
24M → 40K
5:54 | 6:55/mi
25.2M
2:54:36
25.20 mi
Rank: #6309
40K → 25.2M
2:30 | 7:15/mi
FINISH
3:01:03
26.22 mi
Rank: #6136
25.2M → FINISH
6:27 | 6:20/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half⚖️ Balanced
via HALF
Distance13.11 mi
Time1:30:22
Pace6:54 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:30:41
Pace6:56 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:38:1521:276:5521:27
6:55
-
10K
6.21 mi10:59:4642:586:5521:31
6:56
+0:01
15K
9.32 mi11:21:011:04:136:5421:15
6:51
-0:05
20K
12.43 mi11:42:341:25:466:5521:33
6:57
+0:06
HALF
13.11 mi11:47:101:30:226:544:36
6:45
-0:12
25K
15.53 mi12:03:591:47:116:5416:49
6:57
+0:12
30K
18.64 mi12:25:372:08:496:5521:38
6:58
+0:01
20M
20.00 mi12:34:562:18:086:559:19
6:52
-0:06
21M
21.00 mi12:42:212:25:336:567:25
7:25
+0:33
35K
21.75 mi12:47:242:30:366:565:03
6:46
-0:39
23M
23.00 mi12:56:152:39:276:568:51
7:05
+0:19
24M
24.00 mi13:03:002:46:126:566:45
6:45
-0:20
40K
24.85 mi13:08:542:52:066:565:54
6:55
+0:10
25.2M
25.20 mi13:11:242:54:366:562:30
7:15
+0:20
FINISH
26.22 mi13:17:513:01:036:556:27
6:20
-0:55

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

6:20 /mi

Average Pace

6:55 /mi

Slowest Pace

7:25 /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

2:20:39

78% of race

Time at Steady Pace

40:24

22% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:54 /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 mi10:38:1521:276:5521:27
6:55
#7768
10K
6.21 mi10:59:4642:586:5521:31
6:56
#7941
15K
9.32 mi11:21:011:04:136:5421:15
6:51
#7718
20K
12.43 mi11:42:341:25:466:5521:33
6:57
#7599
HALF
13.11 mi11:47:101:30:226:544:36
6:45
#7544
25K
15.53 mi12:03:591:47:116:5416:49
6:57
#7402
30K
18.64 mi12:25:372:08:496:5521:38
6:58
#7045
20M
20.00 mi12:34:562:18:086:559:19
6:52
#6806
21M
21.00 mi12:42:212:25:336:567:25
7:25
#6730
35K
21.75 mi12:47:242:30:366:565:03
6:46
#6654
23M
23.00 mi12:56:152:39:276:568:51
7:05
#6555
24M
24.00 mi13:03:002:46:126:566:45
6:45
#6443
40K
24.85 mi13:08:542:52:066:565:54
6:55
#6353
25.2M
25.20 mi13:11:242:54:366:562:30
7:15
#6309
FINISH
26.22 mi13:17:513:01:036:556:27
6:20
#6136
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 mi7768674367437195(Top 25%)6316(Top 39%)6316(Top 262%)
10K6.21 mi3.10 mi7941-1736855-1126855-1128106(Top 28%)6949(Top 43%)6949(Top 288%)
15K9.32 mi3.11 mi7718+2236692+1636692+1637195(Top 25%)6316(Top 39%)6316(Top 262%)
20K12.43 mi3.11 mi7599+1196605+876605+877375(Top 25%)6416(Top 39%)6416(Top 266%)
HALF13.11 mi0.68 mi7544+556571+346571+346584(Top 23%)5864(Top 36%)5864(Top 243%)
25K15.53 mi2.42 mi7402+1426458+1136458+1136927(Top 24%)6059(Top 37%)6059(Top 251%)
30K18.64 mi3.11 mi7045+3576190+2686190+2685630(Top 19%)5033(Top 31%)5033(Top 209%)
20M20.00 mi1.36 mi6806+2396000+1906000+1904579(Top 16%)4151(Top 25%)4151(Top 172%)
21M21.00 mi1.00 mi6730+765942+585942+585952(Top 21%)5085(Top 31%)5085(Top 211%)
35K21.75 mi0.75 mi6654+765881+615881+615324(Top 18%)4688(Top 29%)4688(Top 194%)
23M23.00 mi1.25 mi6555+995793+885793+885923(Top 20%)5051(Top 31%)5051(Top 209%)
24M24.00 mi1.00 mi6443+1125696+975696+974774(Top 16%)4170(Top 26%)4170(Top 173%)
40K24.85 mi0.85 mi6353+905622+745622+744866(Top 17%)4192(Top 26%)4192(Top 174%)
25.2M25.20 mi0.35 mi6309+445585+375585+373881(Top 13%)3396(Top 21%)3396(Top 141%)
FINISH26.22 mi1.02 mi6136+1735452+1335452+1333208(Top 11%)2849(Top 17%)2849(Top 118%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21
+97ft-345ft

Overall

7195

Males

6316

M45-49

6316

5K→10K

3.1 - 6.2 mi

Top 28%
×5
+79ft-138ft

Overall

8106

Males

6949

M45-49

6949

10K→15K

6.2 - 9.3 mi

Top 25%
×3
+67ft-78ft

Overall

7195

Males

6316

M45-49

6316

15K→20K

9.3 - 12.4 mi

Top 25%
×5
+106ft-86ft

Overall

7375

Males

6416

M45-49

6416

20K→HALF

12.4 - 13.1 mi

Top 23%
×2
+19ft-37ft

Overall

6584

Males

5864

M45-49

5864

HALF→25K

13.1 - 15.5 mi

Top 24%
×4
+66ft-88ft

Overall

6927

Males

6059

M45-49

6059

25K→30K

15.5 - 18.6 mi

Top 19%
×9
+181ft-148ft

Overall

5630

Males

5033

M45-49

5033

30K→20M

18.6 - 20.0 mi

Top 16%
×5
+64ft-50ft

Overall

4579

Males

4151

M45-49

4151

20M→21M

20.0 - 21.0 mi

Top 21%
×8
+106ft-24ft

Overall

5952

Males

5085

M45-49

5085

21M→35K

21.0 - 21.8 mi

Top 18%
×7
+17ft-86ft

Overall

5324

Males

4688

M45-49

4688

35K→23M

21.8 - 23.0 mi

Top 20%
×5
+23ft-63ft

Overall

5923

Males

5051

M45-49

5051

23M→24M

23.0 - 24.0 mi

Top 16%
×6
+12ft-82ft

Overall

4774

Males

4170

M45-49

4170

24M→40K

24.0 - 24.9 mi

Top 17%
×1
+6ft-20ft

Overall

4866

Males

4192

M45-49

4192

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1
+13ft-16ft

Overall

3881

Males

3396

M45-49

3396

25.2M→FINISH

25.2 - 26.2 mi

Top 11%
×2
+22ft-21ft

Overall

3208

Males

2849

M45-49

2849

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Position interactions are being recalculated

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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