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BOSTON MARATHON 2026

Krzysztof Milczarski

Bib: 23572•M

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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 (M65-69)
#0 / 774
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
26:30
3.11 mi
Rank: #20255
Start → 5K
26:30 | 8:32/mi
10K
53:12
6.21 mi
Rank: #20513 (-258)
5K → 10K
26:42 | 8:36/mi
15K
1:20:20
9.32 mi
Rank: #20852 (-339)
10K → 15K
27:08 | 8:45/mi
20K
1:48:18
12.43 mi
Rank: #21116 (-264)
15K → 20K
27:58 | 9:01/mi
HALF
1:54:23
13.11 mi
Rank: #21190 (-74)
20K → HALF
6:05 | 8:56/mi
25K
2:17:32
15.53 mi
Rank: #21571 (-381)
HALF → 25K
23:09 | 9:33/mi
30K
2:51:19
18.64 mi
Rank: #22597 (-1026)
25K → 30K
33:47 | 10:53/mi
20M
3:05:55
20.00 mi
Rank: #22757 (-160)
30K → 20M
14:36 | 10:45/mi
21M
3:18:39
21.00 mi
Rank: #23052 (-295)
20M → 21M
12:44 | 12:44/mi
35K
3:26:52
21.75 mi
Rank: #23150 (-98)
21M → 35K
8:13 | 10:59/mi
23M
3:41:44
23.00 mi
Rank: #23370 (-220)
35K → 23M
14:52 | 11:53/mi
24M
3:52:04
24.00 mi
Rank: #23384 (-14)
23M → 24M
10:20 | 10:20/mi
40K
4:06:44
24.85 mi
Rank: #24015 (-631)
24M → 40K
14:40 | 17:10/mi
25.2M
4:11:14
25.20 mi
Rank: #24065 (-50)
40K → 25.2M
4:30 | 13:03/mi
FINISH
4:25:25
26.22 mi
Rank: #24452 (-387)
25.2M → FINISH
14:11 | 13:56/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:54:23
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time2:31:02
Pace11:32 /mi
📊Positive Split: 32.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:08:1726:308:3226:30
8:32
-
10K
6.21 mi11:34:5953:128:3426:42
8:36
+0:04
15K
9.32 mi12:02:071:20:208:3827:08
8:45
+0:09
20K
12.43 mi12:30:051:48:188:4327:58
9:01
+0:16
HALF
13.11 mi12:36:101:54:238:446:05
8:56
-0:05
25K
15.53 mi12:59:192:17:328:5223:09
9:33
+0:37
30K
18.64 mi13:33:062:51:199:1233:47
10:53
+1:20
20M
20.00 mi13:47:423:05:559:1814:36
10:45
-0:08
21M
21.00 mi14:00:263:18:399:2812:44
12:44
+1:59
35K
21.75 mi14:08:393:26:529:318:13
10:59
-1:45
23M
23.00 mi14:23:313:41:449:3914:52
11:53
+0:54
24M
24.00 mi14:33:513:52:049:4110:20
10:20
-1:33
40K
24.85 mi14:48:314:06:449:5614:40
17:10
+6:50
25.2M
25.20 mi14:53:014:11:149:594:30
13:03
-4:07
FINISH
26.22 mi15:07:124:25:2510:0814:11
13:56
+0:53

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

8:32 /mi

Average Pace

10:08 /mi

Slowest Pace

17:10 /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

2:17:32

52% of race

Time at Steady Pace

1:21:48

31% of race

Time at Slower Pace

46:05

17% of race

Average Pace: 10:07 /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 mi11:08:1726:308:3226:30
8:32
#20255
10K
6.21 mi11:34:5953:128:3426:42
8:36
#20513
15K
9.32 mi12:02:071:20:208:3827:08
8:45
#20852
20K
12.43 mi12:30:051:48:188:4327:58
9:01
#21116
HALF
13.11 mi12:36:101:54:238:446:05
8:56
#21190
25K
15.53 mi12:59:192:17:328:5223:09
9:33
#21571
30K
18.64 mi13:33:062:51:199:1233:47
10:53
#22597
20M
20.00 mi13:47:423:05:559:1814:36
10:45
#22757
21M
21.00 mi14:00:263:18:399:2812:44
12:44
#23052
35K
21.75 mi14:08:393:26:529:318:13
10:59
#23150
23M
23.00 mi14:23:313:41:449:3914:52
11:53
#23370
24M
24.00 mi14:33:513:52:049:4110:20
10:20
#23384
40K
24.85 mi14:48:314:06:449:5614:40
17:10
#24015
25.2M
25.20 mi14:53:014:11:149:594:30
13:03
#24065
FINISH
26.22 mi15:07:124:25:2510:0814:11
13:56
#24452
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi20255123931239321382(Top 74%)12972(Top 79%)12972(Top 1676%)
10K6.21 mi3.10 mi20513-25812534-14112534-14120858(Top 72%)12716(Top 78%)12716(Top 1643%)
15K9.32 mi3.11 mi20852-33912706-17212706-17221382(Top 74%)12972(Top 79%)12972(Top 1676%)
20K12.43 mi3.11 mi21116-26412815-10912815-10921918(Top 76%)13211(Top 81%)13211(Top 1707%)
HALF13.11 mi0.68 mi21190-7412842-2712842-2722397(Top 77%)13464(Top 82%)13464(Top 1740%)
25K15.53 mi2.42 mi21571-38113028-18613028-18623170(Top 80%)13792(Top 84%)13792(Top 1782%)
30K18.64 mi3.11 mi22597-102613502-47413502-47425092(Top 86%)14578(Top 89%)14578(Top 1883%)
20M20.00 mi1.36 mi22757-16013574-7213574-7224384(Top 84%)14174(Top 87%)14174(Top 1831%)
21M21.00 mi1.00 mi23052-29513692-11813692-11826046(Top 90%)14903(Top 91%)14903(Top 1925%)
35K21.75 mi0.75 mi23150-9813727-3513727-3525234(Top 87%)14491(Top 89%)14491(Top 1872%)
23M23.00 mi1.25 mi23370-22013836-10913836-10925966(Top 89%)14815(Top 91%)14815(Top 1914%)
24M24.00 mi1.00 mi23384-1413831+513831+523689(Top 82%)13706(Top 84%)13706(Top 1771%)
40K24.85 mi0.85 mi24015-63114115-28414115-28428881(Top 100%)16251(Top 99%)16251(Top 2100%)
25.2M25.20 mi0.35 mi24065-5014133-1814133-1826099(Top 90%)14836(Top 91%)14836(Top 1917%)
FINISH26.22 mi1.02 mi24452-38714312-17914312-17928648(Top 99%)16110(Top 99%)16110(Top 2081%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21
+97ft-345ft

Overall

21382

Males

12972

M65-69

12972

5K→10K

3.1 - 6.2 mi

Top 72%
×5
+79ft-138ft

Overall

20858

Males

12716

M65-69

12716

10K→15K

6.2 - 9.3 mi

Top 74%
×3
+67ft-78ft

Overall

21382

Males

12972

M65-69

12972

15K→20K

9.3 - 12.4 mi

Top 76%
×5
+106ft-86ft

Overall

21918

Males

13211

M65-69

13211

20K→HALF

12.4 - 13.1 mi

Top 77%
×2
+19ft-37ft

Overall

22397

Males

13464

M65-69

13464

HALF→25K

13.1 - 15.5 mi

Top 80%
×4
+66ft-88ft

Overall

23170

Males

13792

M65-69

13792

25K→30K

15.5 - 18.6 mi

Top 86%
×9
+181ft-148ft

Overall

25092

Males

14578

M65-69

14578

30K→20M

18.6 - 20.0 mi

Top 84%
×5
+64ft-50ft

Overall

24384

Males

14174

M65-69

14174

20M→21M

20.0 - 21.0 mi

Top 90%
×8
+106ft-24ft

Overall

26046

Males

14903

M65-69

14903

21M→35K

21.0 - 21.8 mi

Top 87%
×7
+17ft-86ft

Overall

25234

Males

14491

M65-69

14491

35K→23M

21.8 - 23.0 mi

Top 89%
×5
+23ft-63ft

Overall

25966

Males

14815

M65-69

14815

23M→24M

23.0 - 24.0 mi

Top 82%
×6
+12ft-82ft

Overall

23689

Males

13706

M65-69

13706

24M→40K

24.0 - 24.9 mi

Top 100%
×1
+6ft-20ft

Overall

28881

Males

16251

M65-69

16251

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1
+13ft-16ft

Overall

26099

Males

14836

M65-69

14836

25.2M→FINISH

25.2 - 26.2 mi

Top 99%
×2
+22ft-21ft

Overall

28648

Males

16110

M65-69

16110

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
579
Passed By
4776
Net Change
-4197
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20255
5K → 10K171429-258#20255#20513
10K → 15K89428-339#20513#20852
15K → 20K89353-264#20852#21116
20K → HALF1387-74#21116#21190
HALF → 25K41422-381#21190#21571
25K → 30K291055-1026#21571#22597
30K → 20M33193-160#22597#22757
20M → 21M23318-295#22757#23052
21M → 35K20118-98#23052#23150
35K → 23M11231-220#23150#23370
23M → 24M4963-14#23370#23384
24M → 40K1632-631#23384#24015
40K → 25.2M656-50#24015#24065
25.2M → FINISH4391-387#24065#24452
TOTALS5794776-4197
📊

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