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BOSTON MARATHON 2026

Bart Mazer

Bib: 12392•M

MD

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 21%
Gender (Male)
#0 / 16340
Top 34%
Masters (Masters Men)
#0 / 10617
Top 19%
Age Group (M50-54)
#0 / 1868
Top 14%
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
20:58
3.11 mi
Rank: #6372
Start → 5K
20:58 | 6:45/mi
10K
42:21
6.21 mi
Rank: #7042 (-670)
5K → 10K
21:23 | 6:53/mi
15K
1:03:42
9.32 mi
Rank: #7195 (-153)
10K → 15K
21:21 | 6:53/mi
20K
1:25:06
12.43 mi
Rank: #7114 (+81)
15K → 20K
21:24 | 6:54/mi
HALF
1:29:47
13.11 mi
Rank: #7144 (-30)
20K → HALF
4:41 | 6:53/mi
25K
1:46:26
15.53 mi
Rank: #6981 (+163)
HALF → 25K
16:39 | 6:52/mi
30K
2:08:10
18.64 mi
Rank: #6742 (+239)
25K → 30K
21:44 | 7:00/mi
20M
2:17:39
20.00 mi
Rank: #6614 (+128)
30K → 20M
9:29 | 6:59/mi
21M
2:24:42
21.00 mi
Rank: #6414 (+200)
20M → 21M
7:03 | 7:03/mi
35K
2:29:47
21.75 mi
Rank: #6351 (+63)
21M → 35K
5:05 | 6:48/mi
23M
2:38:23
23.00 mi
Rank: #6226 (+125)
35K → 23M
8:36 | 6:53/mi
24M
2:45:14
24.00 mi
Rank: #6179 (+47)
23M → 24M
6:51 | 6:51/mi
40K
2:51:16
24.85 mi
Rank: #6140 (+39)
24M → 40K
6:02 | 7:04/mi
25.2M
2:53:58
25.20 mi
Rank: #6146 (-6)
40K → 25.2M
2:42 | 7:50/mi
FINISH
3:01:20
26.22 mi
Rank: #6206 (-60)
25.2M → FINISH
7:22 | 7:14/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:29:47
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:31:33
Pace7:00 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0520:586:4520:58
6:45
-
10K
6.21 mi11:10:2842:216:4921:23
6:53
+0:08
15K
9.32 mi11:31:491:03:426:5121:21
6:53
0:00
20K
12.43 mi11:53:131:25:066:5121:24
6:54
+0:01
HALF
13.11 mi11:57:541:29:476:514:41
6:53
-0:01
25K
15.53 mi12:14:331:46:266:5216:39
6:52
-0:01
30K
18.64 mi12:36:172:08:106:5321:44
7:00
+0:08
20M
20.00 mi12:45:462:17:396:539:29
6:59
-0:01
21M
21.00 mi12:52:492:24:426:547:03
7:03
+0:04
35K
21.75 mi12:57:542:29:476:545:05
6:48
-0:15
23M
23.00 mi13:06:302:38:236:548:36
6:53
+0:05
24M
24.00 mi13:13:212:45:146:546:51
6:51
-0:02
40K
24.85 mi13:19:232:51:166:546:02
7:04
+0:13
25.2M
25.20 mi13:22:052:53:586:552:42
7:50
+0:46
FINISH
26.22 mi13:29:273:01:206:567:22
7:14
-0:36

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

6:45 /mi

Average Pace

6:55 /mi

Slowest Pace

7:50 /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

2:58:38

99% of race

Time at Steady Pace

2:42

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:55 /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 mi10:49:0520:586:4520:58
6:45
#6372
10K
6.21 mi11:10:2842:216:4921:23
6:53
#7042
15K
9.32 mi11:31:491:03:426:5121:21
6:53
#7195
20K
12.43 mi11:53:131:25:066:5121:24
6:54
#7114
HALF
13.11 mi11:57:541:29:476:514:41
6:53
#7144
25K
15.53 mi12:14:331:46:266:5216:39
6:52
#6981
30K
18.64 mi12:36:172:08:106:5321:44
7:00
#6742
20M
20.00 mi12:45:462:17:396:539:29
6:59
#6614
21M
21.00 mi12:52:492:24:426:547:03
7:03
#6414
35K
21.75 mi12:57:542:29:476:545:05
6:48
#6351
23M
23.00 mi13:06:302:38:236:548:36
6:53
#6226
24M
24.00 mi13:13:212:45:146:546:51
6:51
#6179
40K
24.85 mi13:19:232:51:166:546:02
7:04
#6140
25.2M
25.20 mi13:22:052:53:586:552:42
7:50
#6146
FINISH
26.22 mi13:29:273:01:206:567:22
7:14
#6206
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 mi6372576357637539(Top 26%)6545(Top 40%)6545(Top 350%)
10K6.21 mi3.10 mi7042-6706237-4746237-4747772(Top 27%)6746(Top 41%)6746(Top 361%)
15K9.32 mi3.11 mi7195-1536341-1046341-1047539(Top 26%)6545(Top 40%)6545(Top 350%)
20K12.43 mi3.11 mi7114+816265+766265+766985(Top 24%)6144(Top 38%)6144(Top 329%)
HALF13.11 mi0.68 mi7144-306285-206285-207635(Top 26%)6595(Top 40%)6595(Top 353%)
25K15.53 mi2.42 mi6981+1636167+1186167+1186361(Top 22%)5636(Top 34%)5636(Top 302%)
30K18.64 mi3.11 mi6742+2395974+1935974+1935860(Top 20%)5199(Top 32%)5199(Top 278%)
20M20.00 mi1.36 mi6614+1285869+1055869+1055431(Top 19%)4835(Top 30%)4835(Top 259%)
21M21.00 mi1.00 mi6414+2005706+1635706+1633767(Top 13%)3435(Top 21%)3435(Top 184%)
35K21.75 mi0.75 mi6351+635646+605646+605647(Top 19%)4917(Top 30%)4917(Top 263%)
23M23.00 mi1.25 mi6226+1255550+965550+964582(Top 16%)4073(Top 25%)4073(Top 218%)
24M24.00 mi1.00 mi6179+475505+455505+455487(Top 19%)4688(Top 29%)4688(Top 251%)
40K24.85 mi0.85 mi6140+395465+405465+405819(Top 20%)4865(Top 30%)4865(Top 260%)
25.2M25.20 mi0.35 mi6146-65467-25467-27193(Top 25%)5639(Top 35%)5639(Top 302%)
FINISH26.22 mi1.02 mi6206-605497-305497-309285(Top 32%)6739(Top 41%)6739(Top 361%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21
+97ft-345ft

Overall

7539

Males

6545

M50-54

6545

5K→10K

3.1 - 6.2 mi

Top 27%
×5
+79ft-138ft

Overall

7772

Males

6746

M50-54

6746

10K→15K

6.2 - 9.3 mi

Top 26%
×3
+67ft-78ft

Overall

7539

Males

6545

M50-54

6545

15K→20K

9.3 - 12.4 mi

Top 24%
×5
+106ft-86ft

Overall

6985

Males

6144

M50-54

6144

20K→HALF

12.4 - 13.1 mi

Top 26%
×2
+19ft-37ft

Overall

7635

Males

6595

M50-54

6595

HALF→25K

13.1 - 15.5 mi

Top 22%
×4
+66ft-88ft

Overall

6361

Males

5636

M50-54

5636

25K→30K

15.5 - 18.6 mi

Top 20%
×9
+181ft-148ft

Overall

5860

Males

5199

M50-54

5199

30K→20M

18.6 - 20.0 mi

Top 19%
×5
+64ft-50ft

Overall

5431

Males

4835

M50-54

4835

20M→21M

20.0 - 21.0 mi

Top 13%
×8
+106ft-24ft

Overall

3767

Males

3435

M50-54

3435

21M→35K

21.0 - 21.8 mi

Top 19%
×7
+17ft-86ft

Overall

5647

Males

4917

M50-54

4917

35K→23M

21.8 - 23.0 mi

Top 16%
×5
+23ft-63ft

Overall

4582

Males

4073

M50-54

4073

23M→24M

23.0 - 24.0 mi

Top 19%
×6
+12ft-82ft

Overall

5487

Males

4688

M50-54

4688

24M→40K

24.0 - 24.9 mi

Top 20%
×1
+6ft-20ft

Overall

5819

Males

4865

M50-54

4865

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1
+13ft-16ft

Overall

7193

Males

5639

M50-54

5639

25.2M→FINISH

25.2 - 26.2 mi

Top 32%
×2
+22ft-21ft

Overall

9285

Males

6739

M50-54

6739

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1588*
Passed By
859
Net Change
+166
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6372
5K → 10K46200-670#6372#7042
10K → 15K94200-153#7042#7195
15K → 20K196115+81#7195#7114
20K → HALF1444-30#7114#7144
HALF → 25K19330+163#7144#6981
25K → 30K274*35+239#6981#6742
30K → 20M14214+128#6742#6614
20M → 21M202*2+200#6614#6414
21M → 35K7310+63#6414#6351
35K → 23M14015+125#6351#6226
23M → 24M8336+47#6226#6179
24M → 40K7637+39#6179#6140
40K → 25.2M2329-6#6140#6146
25.2M → FINISH3292-60#6146#6206
TOTALS1588*859+166

* 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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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing