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BOSTON MARATHON 2026

Reg Chow

Bib: 23131•M

BC

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M60-64)
#0 / 1514
Top 42%
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
27:15
3.11 mi
Rank: #21534
Start → 5K
27:15 | 8:47/mi
10K
53:40
6.21 mi
Rank: #20964 (+570)
5K → 10K
26:25 | 8:31/mi
15K
1:19:54
9.32 mi
Rank: #20558 (+406)
10K → 15K
26:14 | 8:27/mi
20K
1:46:43
12.43 mi
Rank: #20404 (+154)
15K → 20K
26:49 | 8:38/mi
HALF
1:52:28
13.11 mi
Rank: #20373 (+31)
20K → HALF
5:45 | 8:27/mi
25K
2:12:55
15.53 mi
Rank: #20032 (+341)
HALF → 25K
20:27 | 8:26/mi
30K
2:40:04
18.64 mi
Rank: #19704 (+328)
25K → 30K
27:09 | 8:45/mi
20M
2:51:57
20.00 mi
Rank: #19549 (+155)
30K → 20M
11:53 | 8:45/mi
21M
3:01:26
21.00 mi
Rank: #19475 (+74)
20M → 21M
9:29 | 9:29/mi
35K
3:07:33
21.75 mi
Rank: #19328 (+147)
21M → 35K
6:07 | 8:11/mi
23M
3:17:55
23.00 mi
Rank: #19051 (+277)
35K → 23M
10:22 | 8:18/mi
24M
3:25:57
24.00 mi
Rank: #18836 (+215)
23M → 24M
8:02 | 8:02/mi
40K
3:32:51
24.85 mi
Rank: #18640 (+196)
24M → 40K
6:54 | 8:05/mi
25.2M
3:35:52
25.20 mi
Rank: #18560 (+80)
40K → 25.2M
3:01 | 8:45/mi
FINISH
3:43:30
26.22 mi
Rank: #18298 (+262)
25.2M → FINISH
7:38 | 7:30/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via HALF
Distance13.11 mi
Time1:52:28
Pace8:35 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:51:02
Pace8:29 /mi
📊Negative Split: 1.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:31:5927:158:4727:15
8:47
-
10K
6.21 mi11:58:2453:408:3926:25
8:31
-0:16
15K
9.32 mi12:24:381:19:548:3526:14
8:27
-0:04
20K
12.43 mi12:51:271:46:438:3626:49
8:38
+0:11
HALF
13.11 mi12:57:121:52:288:355:45
8:27
-0:11
25K
15.53 mi13:17:392:12:558:3420:27
8:26
-0:01
30K
18.64 mi13:44:482:40:048:3627:09
8:45
+0:19
20M
20.00 mi13:56:412:51:578:3611:53
8:45
0:00
21M
21.00 mi14:06:103:01:268:399:29
9:29
+0:44
35K
21.75 mi14:12:173:07:338:386:07
8:11
-1:18
23M
23.00 mi14:22:393:17:558:3710:22
8:18
+0:07
24M
24.00 mi14:30:413:25:578:358:02
8:02
-0:16
40K
24.85 mi14:37:353:32:518:346:54
8:05
+0:03
25.2M
25.20 mi14:40:363:35:528:343:01
8:45
+0:40
FINISH
26.22 mi14:48:143:43:308:327:38
7:30
-1:15

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

7:30 /mi

Average Pace

8:32 /mi

Slowest Pace

9:29 /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

28:41

13% of race

Time at Steady Pace

1:56:02

52% of race

Time at Slower Pace

1:18:47

35% 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 mi11:31:5927:158:4727:15
8:47
#21534
10K
6.21 mi11:58:2453:408:3926:25
8:31
#20964
15K
9.32 mi12:24:381:19:548:3526:14
8:27
#20558
20K
12.43 mi12:51:271:46:438:3626:49
8:38
#20404
HALF
13.11 mi12:57:121:52:288:355:45
8:27
#20373
25K
15.53 mi13:17:392:12:558:3420:27
8:26
#20032
30K
18.64 mi13:44:482:40:048:3627:09
8:45
#19704
20M
20.00 mi13:56:412:51:578:3611:53
8:45
#19549
21M
21.00 mi14:06:103:01:268:399:29
9:29
#19475
35K
21.75 mi14:12:173:07:338:386:07
8:11
#19328
23M
23.00 mi14:22:393:17:558:3710:22
8:18
#19051
24M
24.00 mi14:30:413:25:578:358:02
8:02
#18836
40K
24.85 mi14:37:353:32:518:346:54
8:05
#18640
25.2M
25.20 mi14:40:363:35:528:343:01
8:45
#18560
FINISH
26.22 mi14:48:143:43:308:327:38
7:30
#18298
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi21534129781297819795(Top 68%)12233(Top 75%)12233(Top 808%)
10K6.21 mi3.10 mi20964+57012743+23512743+23520344(Top 70%)12479(Top 76%)12479(Top 824%)
15K9.32 mi3.11 mi20558+40612562+18112562+18119795(Top 68%)12233(Top 75%)12233(Top 808%)
20K12.43 mi3.11 mi20404+15412478+8412478+8420037(Top 69%)12299(Top 75%)12299(Top 812%)
HALF13.11 mi0.68 mi20373+3112460+1812460+1819813(Top 68%)12231(Top 75%)12231(Top 808%)
25K15.53 mi2.42 mi20032+34112293+16712293+16718165(Top 63%)11422(Top 70%)11422(Top 754%)
30K18.64 mi3.11 mi19704+32812128+16512128+16518234(Top 63%)11355(Top 69%)11355(Top 750%)
20M20.00 mi1.36 mi19549+15512039+8912039+8917654(Top 61%)11031(Top 68%)11031(Top 729%)
21M21.00 mi1.00 mi19475+7411988+5111988+5118417(Top 63%)11327(Top 69%)11327(Top 748%)
35K21.75 mi0.75 mi19328+14711917+7111917+7115632(Top 54%)10045(Top 61%)10045(Top 663%)
23M23.00 mi1.25 mi19051+27711778+13911778+13914350(Top 49%)9404(Top 58%)9404(Top 621%)
24M24.00 mi1.00 mi18836+21511659+11911659+11913996(Top 48%)9162(Top 56%)9162(Top 605%)
40K24.85 mi0.85 mi18640+19611556+10311556+10312972(Top 45%)8627(Top 53%)8627(Top 570%)
25.2M25.20 mi0.35 mi18560+8011518+3811518+3813199(Top 45%)8707(Top 53%)8707(Top 575%)
FINISH26.22 mi1.02 mi18298+26211387+13111387+13111338(Top 39%)7791(Top 48%)7791(Top 515%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21
+97ft-345ft

Overall

19795

Males

12233

M60-64

12233

5K→10K

3.1 - 6.2 mi

Top 70%
×5
+79ft-138ft

Overall

20344

Males

12479

M60-64

12479

10K→15K

6.2 - 9.3 mi

Top 68%
×3
+67ft-78ft

Overall

19795

Males

12233

M60-64

12233

15K→20K

9.3 - 12.4 mi

Top 69%
×5
+106ft-86ft

Overall

20037

Males

12299

M60-64

12299

20K→HALF

12.4 - 13.1 mi

Top 68%
×2
+19ft-37ft

Overall

19813

Males

12231

M60-64

12231

HALF→25K

13.1 - 15.5 mi

Top 63%
×4
+66ft-88ft

Overall

18165

Males

11422

M60-64

11422

25K→30K

15.5 - 18.6 mi

Top 63%
×9
+181ft-148ft

Overall

18234

Males

11355

M60-64

11355

30K→20M

18.6 - 20.0 mi

Top 61%
×5
+64ft-50ft

Overall

17654

Males

11031

M60-64

11031

20M→21M

20.0 - 21.0 mi

Top 63%
×8
+106ft-24ft

Overall

18417

Males

11327

M60-64

11327

21M→35K

21.0 - 21.8 mi

Top 54%
×7
+17ft-86ft

Overall

15632

Males

10045

M60-64

10045

35K→23M

21.8 - 23.0 mi

Top 49%
×5
+23ft-63ft

Overall

14350

Males

9404

M60-64

9404

23M→24M

23.0 - 24.0 mi

Top 48%
×6
+12ft-82ft

Overall

13996

Males

9162

M60-64

9162

24M→40K

24.0 - 24.9 mi

Top 45%
×1
+6ft-20ft

Overall

12972

Males

8627

M60-64

8627

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1
+13ft-16ft

Overall

13199

Males

8707

M60-64

8707

25.2M→FINISH

25.2 - 26.2 mi

Top 39%
×2
+22ft-21ft

Overall

11338

Males

7791

M60-64

7791

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3645*
Passed By
409
Net Change
+3236
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21534
5K → 10K697*127+570#21534#20964
10K → 15K462*56+406#20964#20558
15K → 20K246*92+154#20558#20404
20K → HALF4716+31#20404#20373
HALF → 25K347*6+341#20373#20032
25K → 30K363*35+328#20032#19704
30K → 20M16611+155#19704#19549
20M → 21M12854+74#19549#19475
21M → 35K1525+147#19475#19328
35K → 23M278*1+277#19328#19051
23M → 24M219*4+215#19051#18836
24M → 40K1982+196#18836#18640
40K → 25.2M800+80#18640#18560
25.2M → FINISH262*0+262#18560#18298
TOTALS3645*409+3236

* 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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing