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BOSTON MARATHON 2026

Leslie Lam

Bib: 12204•M

NY

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 50%
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
22:41
3.11 mi
Rank: #11048
Start → 5K
22:41 | 7:19/mi
10K
44:55
6.21 mi
Rank: #10463 (+585)
5K → 10K
22:14 | 7:10/mi
15K
1:07:04
9.32 mi
Rank: #10104 (+359)
10K → 15K
22:09 | 7:08/mi
20K
1:29:19
12.43 mi
Rank: #9776 (+328)
15K → 20K
22:15 | 7:10/mi
HALF
1:34:11
13.11 mi
Rank: #9769 (+7)
20K → HALF
4:52 | 7:09/mi
25K
1:51:43
15.53 mi
Rank: #9635 (+134)
HALF → 25K
17:32 | 7:14/mi
30K
2:15:14
18.64 mi
Rank: #9683 (-48)
25K → 30K
23:31 | 7:35/mi
20M
2:25:55
20.00 mi
Rank: #9798 (-115)
30K → 20M
10:41 | 7:52/mi
21M
2:34:06
21.00 mi
Rank: #9851 (-53)
20M → 21M
8:11 | 8:11/mi
35K
2:39:52
21.75 mi
Rank: #9907 (-56)
21M → 35K
5:46 | 7:43/mi
23M
2:53:45
23.00 mi
Rank: #11535 (-1628)
35K → 23M
13:53 | 11:06/mi
24M
3:05:07
24.00 mi
Rank: #12770 (-1235)
23M → 24M
11:22 | 11:22/mi
40K
3:15:57
24.85 mi
Rank: #14013 (-1243)
24M → 40K
10:50 | 12:41/mi
25.2M
3:20:24
25.20 mi
Rank: #14459 (-446)
40K → 25.2M
4:27 | 12:55/mi
FINISH
3:28:27
26.22 mi
Rank: #14472 (-13)
25.2M → FINISH
8:03 | 7:54/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:34:11
Pace7:12 /mi
2nd Half
Distance13.11 mi
Time1:54:16
Pace8:43 /mi
📊Positive Split: 21.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5522:417:1922:41
7:19
-
10K
6.21 mi11:13:0944:557:1422:14
7:10
-0:09
15K
9.32 mi11:35:181:07:047:1222:09
7:08
-0:02
20K
12.43 mi11:57:331:29:197:1222:15
7:10
+0:02
HALF
13.11 mi12:02:251:34:117:124:52
7:09
-0:01
25K
15.53 mi12:19:571:51:437:1217:32
7:14
+0:05
30K
18.64 mi12:43:282:15:147:1623:31
7:35
+0:21
20M
20.00 mi12:54:092:25:557:1810:41
7:52
+0:17
21M
21.00 mi13:02:202:34:067:218:11
8:11
+0:19
35K
21.75 mi13:08:062:39:527:225:46
7:43
-0:28
23M
23.00 mi13:21:592:53:457:3413:53
11:06
+3:23
24M
24.00 mi13:33:213:05:077:4311:22
11:22
+0:16
40K
24.85 mi13:44:113:15:577:5410:50
12:41
+1:19
25.2M
25.20 mi13:48:383:20:247:584:27
12:55
+0:14
FINISH
26.22 mi13:56:413:28:277:588:03
7:54
-5:01

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

7:08 /mi

Average Pace

7:57 /mi

Slowest Pace

12:55 /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

0:00

0% of race

Time at Steady Pace

2:47:55

81% of race

Time at Slower Pace

40:32

19% of race

Average Pace: 7:57 /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 mi10:50:5522:417:1922:41
7:19
#11048
10K
6.21 mi11:13:0944:557:1422:14
7:10
#10463
15K
9.32 mi11:35:181:07:047:1222:09
7:08
#10104
20K
12.43 mi11:57:331:29:197:1222:15
7:10
#9776
HALF
13.11 mi12:02:251:34:117:124:52
7:09
#9769
25K
15.53 mi12:19:571:51:437:1217:32
7:14
#9635
30K
18.64 mi12:43:282:15:147:1623:31
7:35
#9683
20M
20.00 mi12:54:092:25:557:1810:41
7:52
#9798
21M
21.00 mi13:02:202:34:067:218:11
8:11
#9851
35K
21.75 mi13:08:062:39:527:225:46
7:43
#9907
23M
23.00 mi13:21:592:53:457:3413:53
11:06
#11535
24M
24.00 mi13:33:213:05:077:4311:22
11:22
#12770
40K
24.85 mi13:44:113:15:577:5410:50
12:41
#14013
25.2M
25.20 mi13:48:383:20:247:584:27
12:55
#14459
FINISH
26.22 mi13:56:413:28:277:588:03
7:54
#14472
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 mi11048862186219519(Top 33%)7780(Top 48%)7780(Top 416%)
10K6.21 mi3.10 mi10463+5858305+3168305+3169866(Top 34%)7993(Top 49%)7993(Top 428%)
15K9.32 mi3.11 mi10104+3598113+1928113+1929519(Top 33%)7780(Top 48%)7780(Top 416%)
20K12.43 mi3.11 mi9776+3287912+2017912+2019053(Top 31%)7453(Top 46%)7453(Top 399%)
HALF13.11 mi0.68 mi9769+77906+67906+69776(Top 34%)7894(Top 48%)7894(Top 423%)
25K15.53 mi2.42 mi9635+1347815+917815+919120(Top 31%)7398(Top 45%)7398(Top 396%)
30K18.64 mi3.11 mi9683-487773+427773+4210213(Top 35%)7812(Top 48%)7812(Top 418%)
20M20.00 mi1.36 mi9798-1157800-277800-2711821(Top 41%)8486(Top 52%)8486(Top 454%)
21M21.00 mi1.00 mi9851-537816-167816-1611094(Top 38%)8032(Top 49%)8032(Top 430%)
35K21.75 mi0.75 mi9907-567821-57821-512362(Top 43%)8599(Top 53%)8599(Top 460%)
23M23.00 mi1.25 mi11535-16288600-7798600-77924674(Top 85%)14180(Top 87%)14180(Top 759%)
24M24.00 mi1.00 mi12770-12359105-5059105-50525732(Top 89%)14667(Top 90%)14667(Top 785%)
40K24.85 mi0.85 mi14013-12439600-4959600-49526708(Top 92%)15108(Top 92%)15108(Top 809%)
25.2M25.20 mi0.35 mi14459-4469781-1819781-18125900(Top 89%)14730(Top 90%)14730(Top 789%)
FINISH26.22 mi1.02 mi14472-139769+129769+1214475(Top 50%)9262(Top 57%)9262(Top 496%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21
+97ft-345ft

Overall

9519

Males

7780

M50-54

7780

5K→10K

3.1 - 6.2 mi

Top 34%
×5
+79ft-138ft

Overall

9866

Males

7993

M50-54

7993

10K→15K

6.2 - 9.3 mi

Top 33%
×3
+67ft-78ft

Overall

9519

Males

7780

M50-54

7780

15K→20K

9.3 - 12.4 mi

Top 31%
×5
+106ft-86ft

Overall

9053

Males

7453

M50-54

7453

20K→HALF

12.4 - 13.1 mi

Top 34%
×2
+19ft-37ft

Overall

9776

Males

7894

M50-54

7894

HALF→25K

13.1 - 15.5 mi

Top 31%
×4
+66ft-88ft

Overall

9120

Males

7398

M50-54

7398

25K→30K

15.5 - 18.6 mi

Top 35%
×9
+181ft-148ft

Overall

10213

Males

7812

M50-54

7812

30K→20M

18.6 - 20.0 mi

Top 41%
×5
+64ft-50ft

Overall

11821

Males

8486

M50-54

8486

20M→21M

20.0 - 21.0 mi

Top 38%
×8
+106ft-24ft

Overall

11094

Males

8032

M50-54

8032

21M→35K

21.0 - 21.8 mi

Top 43%
×7
+17ft-86ft

Overall

12362

Males

8599

M50-54

8599

35K→23M

21.8 - 23.0 mi

Top 85%
×5
+23ft-63ft

Overall

24674

Males

14180

M50-54

14180

23M→24M

23.0 - 24.0 mi

Top 89%
×6
+12ft-82ft

Overall

25732

Males

14667

M50-54

14667

24M→40K

24.0 - 24.9 mi

Top 92%
×1
+6ft-20ft

Overall

26708

Males

15108

M50-54

15108

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1
+13ft-16ft

Overall

25900

Males

14730

M50-54

14730

25.2M→FINISH

25.2 - 26.2 mi

Top 50%
×2
+22ft-21ft

Overall

14475

Males

9262

M50-54

9262

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2009*
Passed By
5430
Net Change
-3424
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11048
5K → 10K64256+585#11048#10463
10K → 15K40243+359#10463#10104
15K → 20K358*30+328#10104#9776
20K → HALF3629+7#9776#9769
HALF → 25K17339+134#9769#9635
25K → 30K167215-48#9635#9683
30K → 20M52167-115#9683#9798
20M → 21M55108-53#9798#9851
21M → 35K45101-56#9851#9907
35K → 23M61632-1628#9907#11535
23M → 24M51240-1235#11535#12770
24M → 40K31246-1243#12770#14013
40K → 25.2M0446-446#14013#14459
25.2M → FINISH6578-13#14459#14472
TOTALS2009*5430-3424

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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