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BOSTON MARATHON 2026

Luchi Cheng

Bib: 3121•M

ON

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 12%
Gender (Male)
#0 / 16340
Top 20%
Masters (Masters Men)
#0 / 10617
Top 7%
Age Group (M45-49)
#0 / 2413
Top 8%
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
20:32
3.11 mi
Rank: #5049
Start → 5K
20:32 | 6:37/mi
10K
40:46
6.21 mi
Rank: #4683 (+366)
5K → 10K
20:14 | 6:31/mi
15K
1:00:48
9.32 mi
Rank: #4349 (+334)
10K → 15K
20:02 | 6:27/mi
20K
1:21:04
12.43 mi
Rank: #4223 (+126)
15K → 20K
20:16 | 6:32/mi
HALF
1:25:32
13.11 mi
Rank: #4246 (-23)
20K → HALF
4:28 | 6:34/mi
25K
1:41:29
15.53 mi
Rank: #4176 (+70)
HALF → 25K
15:57 | 6:35/mi
30K
2:02:29
18.64 mi
Rank: #4122 (+54)
25K → 30K
21:00 | 6:46/mi
20M
2:11:34
20.00 mi
Rank: #4019 (+103)
30K → 20M
9:05 | 6:42/mi
21M
2:18:32
21.00 mi
Rank: #3926 (+93)
20M → 21M
6:58 | 6:58/mi
35K
2:23:19
21.75 mi
Rank: #3876 (+50)
21M → 35K
4:47 | 6:24/mi
23M
2:31:28
23.00 mi
Rank: #3737 (+139)
35K → 23M
8:09 | 6:31/mi
24M
2:37:48
24.00 mi
Rank: #3631 (+106)
23M → 24M
6:20 | 6:20/mi
40K
2:43:18
24.85 mi
Rank: #3539 (+92)
24M → 40K
5:30 | 6:26/mi
25.2M
2:45:43
25.20 mi
Rank: #3514 (+25)
40K → 25.2M
2:25 | 7:01/mi
FINISH
2:52:08
26.22 mi
Rank: #3436 (+78)
25.2M → FINISH
6:25 | 6:18/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:25:32
Pace6:32 /mi
2nd Half
Distance13.11 mi
Time1:26:36
Pace6:37 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0720:326:3720:32
6:37
-
10K
6.21 mi10:43:2140:466:3420:14
6:31
-0:06
15K
9.32 mi11:03:231:00:486:3220:02
6:27
-0:04
20K
12.43 mi11:23:391:21:046:3220:16
6:32
+0:05
HALF
13.11 mi11:28:071:25:326:324:28
6:34
+0:02
25K
15.53 mi11:44:041:41:296:3215:57
6:35
+0:01
30K
18.64 mi12:05:042:02:296:3521:00
6:46
+0:11
20M
20.00 mi12:14:092:11:346:359:05
6:42
-0:04
21M
21.00 mi12:21:072:18:326:366:58
6:58
+0:16
35K
21.75 mi12:25:542:23:196:364:47
6:24
-0:34
23M
23.00 mi12:34:032:31:286:368:09
6:31
+0:07
24M
24.00 mi12:40:232:37:486:356:20
6:20
-0:11
40K
24.85 mi12:45:532:43:186:355:30
6:26
+0:06
25.2M
25.20 mi12:48:182:45:436:352:25
7:01
+0:35
FINISH
26.22 mi12:54:432:52:086:356:25
6:18
-0:43

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

6:18 /mi

Average Pace

6:34 /mi

Slowest Pace

7:01 /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

2:42:45

95% of race

Time at Steady Pace

9:23

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:34 /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 mi10:23:0720:326:3720:32
6:37
#5049
10K
6.21 mi10:43:2140:466:3420:14
6:31
#4683
15K
9.32 mi11:03:231:00:486:3220:02
6:27
#4349
20K
12.43 mi11:23:391:21:046:3220:16
6:32
#4223
HALF
13.11 mi11:28:071:25:326:324:28
6:34
#4246
25K
15.53 mi11:44:041:41:296:3215:57
6:35
#4176
30K
18.64 mi12:05:042:02:296:3521:00
6:46
#4122
20M
20.00 mi12:14:092:11:346:359:05
6:42
#4019
21M
21.00 mi12:21:072:18:326:366:58
6:58
#3926
35K
21.75 mi12:25:542:23:196:364:47
6:24
#3876
23M
23.00 mi12:34:032:31:286:368:09
6:31
#3737
24M
24.00 mi12:40:232:37:486:356:20
6:20
#3631
40K
24.85 mi12:45:532:43:186:355:30
6:26
#3539
25.2M
25.20 mi12:48:182:45:436:352:25
7:01
#3514
FINISH
26.22 mi12:54:432:52:086:356:25
6:18
#3436
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 mi5049470747073836(Top 13%)3650(Top 22%)3650(Top 151%)
10K6.21 mi3.10 mi4683+3664393+3144393+3144313(Top 15%)4077(Top 25%)4077(Top 169%)
15K9.32 mi3.11 mi4349+3344113+2804113+2803836(Top 13%)3650(Top 22%)3650(Top 151%)
20K12.43 mi3.11 mi4223+1264000+1134000+1133935(Top 14%)3730(Top 23%)3730(Top 155%)
HALF13.11 mi0.68 mi4246-234020-204020-204745(Top 16%)4417(Top 27%)4417(Top 183%)
25K15.53 mi2.42 mi4176+703949+713949+713943(Top 14%)3709(Top 23%)3709(Top 154%)
30K18.64 mi3.11 mi4122+543888+613888+614051(Top 14%)3759(Top 23%)3759(Top 156%)
20M20.00 mi1.36 mi4019+1033791+973791+973398(Top 12%)3166(Top 19%)3166(Top 131%)
21M21.00 mi1.00 mi3926+933706+853706+853252(Top 11%)3004(Top 18%)3004(Top 124%)
35K21.75 mi0.75 mi3876+503656+503656+502989(Top 10%)2787(Top 17%)2787(Top 115%)
23M23.00 mi1.25 mi3737+1393525+1313525+1312490(Top 9%)2340(Top 14%)2340(Top 97%)
24M24.00 mi1.00 mi3631+1063435+903435+902356(Top 8%)2199(Top 13%)2199(Top 91%)
40K24.85 mi0.85 mi3539+923350+853350+852277(Top 8%)2116(Top 13%)2116(Top 88%)
25.2M25.20 mi0.35 mi3514+253322+283322+282672(Top 9%)2436(Top 15%)2436(Top 101%)
FINISH26.22 mi1.02 mi3436+783247+753247+752999(Top 10%)2677(Top 16%)2677(Top 111%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21
+97ft-345ft

Overall

3836

Males

3650

M45-49

3650

5K→10K

3.1 - 6.2 mi

Top 15%
×5
+79ft-138ft

Overall

4313

Males

4077

M45-49

4077

10K→15K

6.2 - 9.3 mi

Top 13%
×3
+67ft-78ft

Overall

3836

Males

3650

M45-49

3650

15K→20K

9.3 - 12.4 mi

Top 14%
×5
+106ft-86ft

Overall

3935

Males

3730

M45-49

3730

20K→HALF

12.4 - 13.1 mi

Top 16%
×2
+19ft-37ft

Overall

4745

Males

4417

M45-49

4417

HALF→25K

13.1 - 15.5 mi

Top 14%
×4
+66ft-88ft

Overall

3943

Males

3709

M45-49

3709

25K→30K

15.5 - 18.6 mi

Top 14%
×9
+181ft-148ft

Overall

4051

Males

3759

M45-49

3759

30K→20M

18.6 - 20.0 mi

Top 12%
×5
+64ft-50ft

Overall

3398

Males

3166

M45-49

3166

20M→21M

20.0 - 21.0 mi

Top 11%
×8
+106ft-24ft

Overall

3252

Males

3004

M45-49

3004

21M→35K

21.0 - 21.8 mi

Top 10%
×7
+17ft-86ft

Overall

2989

Males

2787

M45-49

2787

35K→23M

21.8 - 23.0 mi

Top 9%
×5
+23ft-63ft

Overall

2490

Males

2340

M45-49

2340

23M→24M

23.0 - 24.0 mi

Top 8%
×6
+12ft-82ft

Overall

2356

Males

2199

M45-49

2199

24M→40K

24.0 - 24.9 mi

Top 8%
×1
+6ft-20ft

Overall

2277

Males

2116

M45-49

2116

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1
+13ft-16ft

Overall

2672

Males

2436

M45-49

2436

25.2M→FINISH

25.2 - 26.2 mi

Top 10%
×2
+22ft-21ft

Overall

2999

Males

2677

M45-49

2677

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1923
Passed By
310
Net Change
+1613
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5049
5K → 10K41246+366#5049#4683
10K → 15K35016+334#4683#4349
15K → 20K16034+126#4349#4223
20K → HALF629-23#4223#4246
HALF → 25K11545+70#4246#4176
25K → 30K12369+54#4176#4122
30K → 20M11310+103#4122#4019
20M → 21M10815+93#4019#3926
21M → 35K6010+50#3926#3876
35K → 23M1478+139#3876#3737
23M → 24M1104+106#3737#3631
24M → 40K964+92#3631#3539
40K → 25.2M327+25#3539#3514
25.2M → FINISH9113+78#3514#3436
TOTALS1923310+1613
📊

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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing