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BOSTON MARATHON 2026

John Olszewski

Bib: 5821•M

MI

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 14%
Gender (Male)
#0 / 16340
Top 23%
Masters (Masters Men)
#0 / 10617
Top 9%
Age Group (M50-54)
#0 / 1868
Top 6%
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
20:41
3.11 mi
Rank: #5473
Start → 5K
20:41 | 6:40/mi
10K
41:23
6.21 mi
Rank: #5494 (-21)
5K → 10K
20:42 | 6:40/mi
15K
1:01:52
9.32 mi
Rank: #5260 (+234)
10K → 15K
20:29 | 6:36/mi
20K
1:22:29
12.43 mi
Rank: #5070 (+190)
15K → 20K
20:37 | 6:39/mi
HALF
1:26:56
13.11 mi
Rank: #5040 (+30)
20K → HALF
4:27 | 6:32/mi
25K
1:42:59
15.53 mi
Rank: #4884 (+156)
HALF → 25K
16:03 | 6:38/mi
30K
2:03:58
18.64 mi
Rank: #4699 (+185)
25K → 30K
20:59 | 6:46/mi
20M
2:13:07
20.00 mi
Rank: #4577 (+122)
30K → 20M
9:09 | 6:45/mi
21M
2:20:04
21.00 mi
Rank: #4451 (+126)
20M → 21M
6:57 | 6:57/mi
35K
2:24:59
21.75 mi
Rank: #4406 (+45)
21M → 35K
4:55 | 6:35/mi
23M
2:33:24
23.00 mi
Rank: #4313 (+93)
35K → 23M
8:25 | 6:44/mi
24M
2:39:57
24.00 mi
Rank: #4244 (+69)
23M → 24M
6:33 | 6:33/mi
40K
2:45:38
24.85 mi
Rank: #4169 (+75)
24M → 40K
5:41 | 6:39/mi
25.2M
2:48:07
25.20 mi
Rank: #4142 (+27)
40K → 25.2M
2:29 | 7:13/mi
FINISH
2:54:35
26.22 mi
Rank: #4075 (+67)
25.2M → FINISH
6:28 | 6:21/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half⚖️ Balanced
via HALF
Distance13.11 mi
Time1:26:56
Pace6:38 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:27:39
Pace6:42 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:4220:416:4020:41
6:40
-
10K
6.21 mi10:45:2441:236:4020:42
6:40
0:00
15K
9.32 mi11:05:531:01:526:3920:29
6:36
-0:04
20K
12.43 mi11:26:301:22:296:3920:37
6:39
+0:03
HALF
13.11 mi11:30:571:26:566:384:27
6:32
-0:07
25K
15.53 mi11:47:001:42:596:3816:03
6:38
+0:06
30K
18.64 mi12:07:592:03:586:4020:59
6:46
+0:08
20M
20.00 mi12:17:082:13:076:409:09
6:45
-0:01
21M
21.00 mi12:24:052:20:046:416:57
6:57
+0:12
35K
21.75 mi12:29:002:24:596:404:55
6:35
-0:22
23M
23.00 mi12:37:252:33:246:418:25
6:44
+0:09
24M
24.00 mi12:43:582:39:576:406:33
6:33
-0:11
40K
24.85 mi12:49:392:45:386:405:41
6:39
+0:06
25.2M
25.20 mi12:52:082:48:076:412:29
7:13
+0:34
FINISH
26.22 mi12:58:362:54:356:406:28
6:21
-0:52

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

6:21 /mi

Average Pace

6:40 /mi

Slowest Pace

7:13 /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

2:52:06

99% of race

Time at Steady Pace

2:29

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:40 /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 mi10:24:4220:416:4020:41
6:40
#5473
10K
6.21 mi10:45:2441:236:4020:42
6:40
#5494
15K
9.32 mi11:05:531:01:526:3920:29
6:36
#5260
20K
12.43 mi11:26:301:22:296:3920:37
6:39
#5070
HALF
13.11 mi11:30:571:26:566:384:27
6:32
#5040
25K
15.53 mi11:47:001:42:596:3816:03
6:38
#4884
30K
18.64 mi12:07:592:03:586:4020:59
6:46
#4699
20M
20.00 mi12:17:082:13:076:409:09
6:45
#4577
21M
21.00 mi12:24:052:20:046:416:57
6:57
#4451
35K
21.75 mi12:29:002:24:596:404:55
6:35
#4406
23M
23.00 mi12:37:252:33:246:418:25
6:44
#4313
24M
24.00 mi12:43:582:39:576:406:33
6:33
#4244
40K
24.85 mi12:49:392:45:386:405:41
6:39
#4169
25.2M
25.20 mi12:52:082:48:076:412:29
7:13
#4142
FINISH
26.22 mi12:58:362:54:356:406:28
6:21
#4075
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 mi5473505850584867(Top 17%)4545(Top 28%)4545(Top 243%)
10K6.21 mi3.10 mi5494-215085-275085-275581(Top 19%)5136(Top 31%)5136(Top 275%)
15K9.32 mi3.11 mi5260+2344884+2014884+2014867(Top 17%)4545(Top 28%)4545(Top 243%)
20K12.43 mi3.11 mi5070+1904722+1624722+1624669(Top 16%)4369(Top 27%)4369(Top 234%)
HALF13.11 mi0.68 mi5040+304700+224700+224579(Top 16%)4294(Top 26%)4294(Top 230%)
25K15.53 mi2.42 mi4884+1564561+1394561+1394247(Top 15%)3971(Top 24%)3971(Top 213%)
30K18.64 mi3.11 mi4699+1854395+1664395+1664027(Top 14%)3741(Top 23%)3741(Top 200%)
20M20.00 mi1.36 mi4577+1224280+1154280+1153693(Top 13%)3423(Top 21%)3423(Top 183%)
21M21.00 mi1.00 mi4451+1264165+1154165+1153189(Top 11%)2959(Top 18%)2959(Top 158%)
35K21.75 mi0.75 mi4406+454120+454120+454029(Top 14%)3660(Top 22%)3660(Top 196%)
23M23.00 mi1.25 mi4313+934028+924028+923621(Top 12%)3295(Top 20%)3295(Top 176%)
24M24.00 mi1.00 mi4244+693961+673961+673436(Top 12%)3114(Top 19%)3114(Top 167%)
40K24.85 mi0.85 mi4169+753894+673894+673313(Top 11%)2987(Top 18%)2987(Top 160%)
25.2M25.20 mi0.35 mi4142+273862+323862+323560(Top 12%)3137(Top 19%)3137(Top 168%)
FINISH26.22 mi1.02 mi4075+673792+703792+703267(Top 11%)2894(Top 18%)2894(Top 155%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21
+97ft-345ft

Overall

4867

Males

4545

M50-54

4545

5K→10K

3.1 - 6.2 mi

Top 19%
×5
+79ft-138ft

Overall

5581

Males

5136

M50-54

5136

10K→15K

6.2 - 9.3 mi

Top 17%
×3
+67ft-78ft

Overall

4867

Males

4545

M50-54

4545

15K→20K

9.3 - 12.4 mi

Top 16%
×5
+106ft-86ft

Overall

4669

Males

4369

M50-54

4369

20K→HALF

12.4 - 13.1 mi

Top 16%
×2
+19ft-37ft

Overall

4579

Males

4294

M50-54

4294

HALF→25K

13.1 - 15.5 mi

Top 15%
×4
+66ft-88ft

Overall

4247

Males

3971

M50-54

3971

25K→30K

15.5 - 18.6 mi

Top 14%
×9
+181ft-148ft

Overall

4027

Males

3741

M50-54

3741

30K→20M

18.6 - 20.0 mi

Top 13%
×5
+64ft-50ft

Overall

3693

Males

3423

M50-54

3423

20M→21M

20.0 - 21.0 mi

Top 11%
×8
+106ft-24ft

Overall

3189

Males

2959

M50-54

2959

21M→35K

21.0 - 21.8 mi

Top 14%
×7
+17ft-86ft

Overall

4029

Males

3660

M50-54

3660

35K→23M

21.8 - 23.0 mi

Top 12%
×5
+23ft-63ft

Overall

3621

Males

3295

M50-54

3295

23M→24M

23.0 - 24.0 mi

Top 12%
×6
+12ft-82ft

Overall

3436

Males

3114

M50-54

3114

24M→40K

24.0 - 24.9 mi

Top 11%
×1
+6ft-20ft

Overall

3313

Males

2987

M50-54

2987

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1
+13ft-16ft

Overall

3560

Males

3137

M50-54

3137

25.2M→FINISH

25.2 - 26.2 mi

Top 11%
×2
+22ft-21ft

Overall

3267

Males

2894

M50-54

2894

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1821*
Passed By
423
Net Change
+1398
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5473
5K → 10K178199-21#5473#5494
10K → 15K275*41+234#5494#5260
15K → 20K210*20+190#5260#5070
20K → HALF355+30#5070#5040
HALF → 25K17519+156#5040#4884
25K → 30K217*32+185#4884#4699
30K → 20M13210+122#4699#4577
20M → 21M13711+126#4577#4451
21M → 35K5510+45#4451#4406
35K → 23M10714+93#4406#4313
23M → 24M8617+69#4313#4244
24M → 40K8813+75#4244#4169
40K → 25.2M3710+27#4169#4142
25.2M → FINISH8922+67#4142#4075
TOTALS1821*423+1398

* 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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Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing