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BOSTON MARATHON 2026

Ondrej Blaha

Bib: 4715•M

NY

Boston Marathon logo
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 (M40-44)
#0 / 2198
Top 24%
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
20:57
3.11 mi
Rank: #6293
Start → 5K
20:57 | 6:45/mi
10K
41:22
6.21 mi
Rank: #5470 (+823)
5K → 10K
20:25 | 6:35/mi
15K
1:01:32
9.32 mi
Rank: #4965 (+505)
10K → 15K
20:10 | 6:30/mi
20K
1:21:52
12.43 mi
Rank: #4700 (+265)
15K → 20K
20:20 | 6:33/mi
HALF
1:26:14
13.11 mi
Rank: #4639 (+61)
20K → HALF
4:22 | 6:25/mi
25K
1:42:09
15.53 mi
Rank: #4482 (+157)
HALF → 25K
15:55 | 6:34/mi
30K
2:03:16
18.64 mi
Rank: #4404 (+78)
25K → 30K
21:07 | 6:48/mi
20M
2:12:19
20.00 mi
Rank: #4291 (+113)
30K → 20M
9:03 | 6:40/mi
21M
2:19:23
21.00 mi
Rank: #4224 (+67)
20M → 21M
7:04 | 7:04/mi
35K
2:24:21
21.75 mi
Rank: #4204 (+20)
21M → 35K
4:58 | 6:39/mi
23M
2:32:33
23.00 mi
Rank: #4057 (+147)
35K → 23M
8:12 | 6:34/mi
24M
2:39:19
24.00 mi
Rank: #4048 (+9)
23M → 24M
6:46 | 6:46/mi
40K
2:45:09
24.85 mi
Rank: #4031 (+17)
24M → 40K
5:50 | 6:50/mi
25.2M
2:47:35
25.20 mi
Rank: #3997 (+34)
40K → 25.2M
2:26 | 7:04/mi
FINISH
2:54:07
26.22 mi
Rank: #3940 (+57)
25.2M → FINISH
6:32 | 6:25/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:26:14
Pace6:35 /mi
2nd Half
Distance13.11 mi
Time1:27:53
Pace6:43 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3220:576:4520:57
6:45
-
10K
6.21 mi10:43:5741:226:4020:25
6:35
-0:10
15K
9.32 mi11:04:071:01:326:3720:10
6:30
-0:05
20K
12.43 mi11:24:271:21:526:3620:20
6:33
+0:03
HALF
13.11 mi11:28:491:26:146:354:22
6:25
-0:08
25K
15.53 mi11:44:441:42:096:3515:55
6:34
+0:09
30K
18.64 mi12:05:512:03:166:3721:07
6:48
+0:14
20M
20.00 mi12:14:542:12:196:379:03
6:40
-0:08
21M
21.00 mi12:21:582:19:236:397:04
7:04
+0:24
35K
21.75 mi12:26:562:24:216:394:58
6:39
-0:25
23M
23.00 mi12:35:082:32:336:388:12
6:34
-0:05
24M
24.00 mi12:41:542:39:196:396:46
6:46
+0:12
40K
24.85 mi12:47:442:45:096:395:50
6:50
+0:04
25.2M
25.20 mi12:50:102:47:356:402:26
7:04
+0:14
FINISH
26.22 mi12:56:422:54:076:396:32
6:25
-0:39

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

6:25 /mi

Average Pace

6:39 /mi

Slowest Pace

7:04 /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

2:44:37

95% of race

Time at Steady Pace

9:30

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:38 /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 mi10:23:3220:576:4520:57
6:45
#6293
10K
6.21 mi10:43:5741:226:4020:25
6:35
#5470
15K
9.32 mi11:04:071:01:326:3720:10
6:30
#4965
20K
12.43 mi11:24:271:21:526:3620:20
6:33
#4700
HALF
13.11 mi11:28:491:26:146:354:22
6:25
#4639
25K
15.53 mi11:44:441:42:096:3515:55
6:34
#4482
30K
18.64 mi12:05:512:03:166:3721:07
6:48
#4404
20M
20.00 mi12:14:542:12:196:379:03
6:40
#4291
21M
21.00 mi12:21:582:19:236:397:04
7:04
#4224
35K
21.75 mi12:26:562:24:216:394:58
6:39
#4204
23M
23.00 mi12:35:082:32:336:388:12
6:34
#4057
24M
24.00 mi12:41:542:39:196:396:46
6:46
#4048
40K
24.85 mi12:47:442:45:096:395:50
6:50
#4031
25.2M
25.20 mi12:50:102:47:356:402:26
7:04
#3997
FINISH
26.22 mi12:56:422:54:076:396:32
6:25
#3940
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6293569456944164(Top 14%)3943(Top 24%)3943(Top 179%)
10K6.21 mi3.10 mi5470+8235067+6275067+6274787(Top 16%)4487(Top 27%)4487(Top 204%)
15K9.32 mi3.11 mi4965+5054641+4264641+4264164(Top 14%)3943(Top 24%)3943(Top 179%)
20K12.43 mi3.11 mi4700+2654412+2294412+2294077(Top 14%)3856(Top 24%)3856(Top 175%)
HALF13.11 mi0.68 mi4639+614356+564356+563763(Top 13%)3580(Top 22%)3580(Top 163%)
25K15.53 mi2.42 mi4482+1574214+1424214+1423865(Top 13%)3645(Top 22%)3645(Top 166%)
30K18.64 mi3.11 mi4404+784144+704144+704345(Top 15%)4007(Top 25%)4007(Top 182%)
20M20.00 mi1.36 mi4291+1134031+1134031+1133267(Top 11%)3053(Top 19%)3053(Top 139%)
21M21.00 mi1.00 mi4224+673966+653966+653826(Top 13%)3472(Top 21%)3472(Top 158%)
35K21.75 mi0.75 mi4204+203942+243942+244480(Top 15%)4011(Top 25%)4011(Top 182%)
23M23.00 mi1.25 mi4057+1473803+1393803+1392682(Top 9%)2508(Top 15%)2508(Top 114%)
24M24.00 mi1.00 mi4048+93793+103793+104827(Top 17%)4203(Top 26%)4203(Top 191%)
40K24.85 mi0.85 mi4031+173772+213772+214327(Top 15%)3768(Top 23%)3768(Top 171%)
25.2M25.20 mi0.35 mi3997+343738+343738+342913(Top 10%)2633(Top 16%)2633(Top 120%)
FINISH26.22 mi1.02 mi3940+573681+573681+573619(Top 12%)3175(Top 19%)3175(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21
+97ft-345ft

Overall

4164

Males

3943

M40-44

3943

5K→10K

3.1 - 6.2 mi

Top 16%
×5
+79ft-138ft

Overall

4787

Males

4487

M40-44

4487

10K→15K

6.2 - 9.3 mi

Top 14%
×3
+67ft-78ft

Overall

4164

Males

3943

M40-44

3943

15K→20K

9.3 - 12.4 mi

Top 14%
×5
+106ft-86ft

Overall

4077

Males

3856

M40-44

3856

20K→HALF

12.4 - 13.1 mi

Top 13%
×2
+19ft-37ft

Overall

3763

Males

3580

M40-44

3580

HALF→25K

13.1 - 15.5 mi

Top 13%
×4
+66ft-88ft

Overall

3865

Males

3645

M40-44

3645

25K→30K

15.5 - 18.6 mi

Top 15%
×9
+181ft-148ft

Overall

4345

Males

4007

M40-44

4007

30K→20M

18.6 - 20.0 mi

Top 11%
×5
+64ft-50ft

Overall

3267

Males

3053

M40-44

3053

20M→21M

20.0 - 21.0 mi

Top 13%
×8
+106ft-24ft

Overall

3826

Males

3472

M40-44

3472

21M→35K

21.0 - 21.8 mi

Top 15%
×7
+17ft-86ft

Overall

4480

Males

4011

M40-44

4011

35K→23M

21.8 - 23.0 mi

Top 9%
×5
+23ft-63ft

Overall

2682

Males

2508

M40-44

2508

23M→24M

23.0 - 24.0 mi

Top 17%
×6
+12ft-82ft

Overall

4827

Males

4203

M40-44

4203

24M→40K

24.0 - 24.9 mi

Top 15%
×1
+6ft-20ft

Overall

4327

Males

3768

M40-44

3768

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1
+13ft-16ft

Overall

2913

Males

2633

M40-44

2633

25.2M→FINISH

25.2 - 26.2 mi

Top 12%
×2
+22ft-21ft

Overall

3619

Males

3175

M40-44

3175

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2649*
Passed By
296
Net Change
+2353
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6293
5K → 10K837*14+823#6293#5470
10K → 15K511*6+505#5470#4965
15K → 20K274*9+265#4965#4700
20K → HALF621+61#4700#4639
HALF → 25K17013+157#4639#4482
25K → 30K14769+78#4482#4404
30K → 20M12613+113#4404#4291
20M → 21M8720+67#4291#4224
21M → 35K4727+20#4224#4204
35K → 23M15912+147#4204#4057
23M → 24M5344+9#4057#4048
24M → 40K5841+17#4048#4031
40K → 25.2M417+34#4031#3997
25.2M → FINISH7720+57#3997#3940
TOTALS2649*296+2353

* 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