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BOSTON MARATHON 2025

Ken Roznowski

Bib: 19989•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 34%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:42
Rank: #16180
Start → 5K
24:42 | 7:57/mi
10K· 6.21 mi
49:49
Rank: #16651 (-471)
5K → 10K
25:07 | 8:05/mi
15K· 9.32 mi
1:14:55
Rank: #16618 (+33)
10K → 15K
25:06 | 8:05/mi
20K· 12.43 mi
1:40:08
Rank: #16359 (+259)
15K → 20K
25:13 | 8:07/mi
Half· 13.11 mi
1:45:37
Rank: #16352 (+7)
20K → Half
5:29 | 8:02/mi
25K· 15.53 mi
2:06:03
Rank: #16413 (-61)
Half → 25K
20:26 | 8:26/mi
30K· 18.64 mi
2:33:21
Rank: #16386 (+27)
25K → 30K
27:18 | 8:47/mi
20M
2:45:33
Rank: #16351 (+35)
30K → 20M
12:12 | 8:59/mi
21M
2:55:33
Rank: #16448 (-97)
20M → 21M
10:00 | 10:00/mi
35K· 21.75 mi
3:02:04
Rank: #16425 (+23)
21M → 35K
6:31 | 8:43/mi
23M
3:13:35
Rank: #16442 (-17)
35K → 23M
11:31 | 9:12/mi
24M
3:22:18
Rank: #16406 (+36)
23M → 24M
8:43 | 8:43/mi
40K· 24.85 mi
3:29:51
Rank: #16354 (+52)
24M → 40K
7:33 | 8:50/mi
25.2M
3:33:05
Rank: #16308 (+46)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:41:42
Rank: #16301 (+7)
25.2M → Finish
8:37 | 8:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:37
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:56:05
Pace8:51 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4824:427:5724:42
7:57
-
10K
6.21 mi11:41:5549:498:0125:07
8:05
+0:08
15K
9.32 mi12:07:011:14:558:0225:06
8:05
0:00
20K
12.43 mi12:32:141:40:088:0325:13
8:07
+0:02
Half
13.11 mi12:37:431:45:378:035:29
8:02
-0:05
25K
15.53 mi12:58:092:06:038:0720:26
8:26
+0:24
30K
18.64 mi13:25:272:33:218:1427:18
8:47
+0:21
20M
20.00 mi13:37:392:45:338:1712:12
8:59
+0:12
21M
21.00 mi13:47:392:55:338:2210:00
10:00
+1:01
35K
21.75 mi13:54:103:02:048:226:31
8:43
-1:17
23M
23.00 mi14:05:413:13:358:2511:31
9:12
+0:29
24M
24.00 mi14:14:243:22:188:268:43
8:43
-0:29
40K
24.85 mi14:21:573:29:518:277:33
8:50
+0:07
25.2M
25.20 mi14:25:113:33:058:273:14
9:23
+0:33
Finish
26.22 mi14:33:483:41:428:288:37
8:27
-0:56

Checkpoints & Pacing

📈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

7:57 /mi

Average Pace

8:28 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:03

57% of race

Time at Steady Pace

1:10:54

32% of race

Time at Slower Pace

24:45

11% of race

Average Pace: 8:27 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:16:4824:427:5724:42
7:57
#16180
10K
6.21 mi11:41:5549:498:0125:07
8:05
#16651
15K
9.32 mi12:07:011:14:558:0225:06
8:05
#16618
20K
12.43 mi12:32:141:40:088:0325:13
8:07
#16359
Half
13.11 mi12:37:431:45:378:035:29
8:02
#16352
25K
15.53 mi12:58:092:06:038:0720:26
8:26
#16413
30K
18.64 mi13:25:272:33:218:1427:18
8:47
#16386
20M
20.00 mi13:37:392:45:338:1712:12
8:59
#16351
21M
21.00 mi13:47:392:55:338:2210:00
10:00
#16448
35K
21.75 mi13:54:103:02:048:226:31
8:43
#16425
23M
23.00 mi14:05:413:13:358:2511:31
9:12
#16442
24M
24.00 mi14:14:243:22:188:268:43
8:43
#16406
40K
24.85 mi14:21:573:29:518:277:33
8:50
#16354
25.2M
25.20 mi14:25:113:33:058:273:14
9:23
#16308
Finish
26.22 mi14:33:483:41:428:288:37
8:27
#16301
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi16180108791087916595(Top 58%)11052(Top 69%)11052(Top 878%)
10K6.21 mi3.10 mi16651-47111078-19911078-19917078(Top 60%)11277(Top 70%)11277(Top 896%)
15K9.32 mi3.11 mi16618+3311074+411074+416595(Top 58%)11052(Top 69%)11052(Top 878%)
20K12.43 mi3.11 mi16359+25910954+12010954+12015736(Top 55%)10638(Top 66%)10638(Top 845%)
Half13.11 mi0.68 mi16352+710949+510949+516154(Top 57%)10827(Top 67%)10827(Top 860%)
25K15.53 mi2.42 mi16413-6110954-510954-516725(Top 59%)10975(Top 68%)10975(Top 872%)
30K18.64 mi3.11 mi16386+2710873+8110873+8116510(Top 58%)10720(Top 67%)10720(Top 851%)
20M20.00 mi1.36 mi16351+3510841+3210841+3216662(Top 59%)10663(Top 66%)10663(Top 847%)
21M21.00 mi1.00 mi16448-9710845-410845-418274(Top 64%)11290(Top 70%)11290(Top 897%)
35K21.75 mi0.75 mi16425+2310822+2310822+2316724(Top 59%)10498(Top 65%)10498(Top 834%)
23M23.00 mi1.25 mi16442-1710804+1810804+1817301(Top 61%)10647(Top 66%)10647(Top 846%)
24M24.00 mi1.00 mi16406+3610749+5510749+5515828(Top 56%)9964(Top 62%)9964(Top 791%)
40K24.85 mi0.85 mi16354+5210704+4510704+4515343(Top 54%)9591(Top 60%)9591(Top 762%)
25.2M25.20 mi0.35 mi16308+4610677+2710677+2713857(Top 49%)8891(Top 55%)8891(Top 706%)
Finish26.22 mi1.02 mi16301+710654+2310654+2315922(Top 56%)9904(Top 61%)9904(Top 787%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21stories
+97ft-345ft

Overall

16595

Males

11052

M60-64

11052

5K→10K

3.1 - 6.2 mi

Top 60%
×5stories
+79ft-138ft

Overall

17078

Males

11277

M60-64

11277

10K→15K

6.2 - 9.3 mi

Top 58%
×3stories
+67ft-78ft

Overall

16595

Males

11052

M60-64

11052

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

15736

Males

10638

M60-64

10638

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

16154

Males

10827

M60-64

10827

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

16725

Males

10975

M60-64

10975

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

16510

Males

10720

M60-64

10720

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16662

Males

10663

M60-64

10663

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

18274

Males

11290

M60-64

11290

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

16724

Males

10498

M60-64

10498

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

17301

Males

10647

M60-64

10647

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15828

Males

9964

M60-64

9964

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15343

Males

9591

M60-64

9591

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13857

Males

8891

M60-64

8891

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

15922

Males

9904

M60-64

9904

Passing Analysis

Category:
Athletes Passed
1869
Passed By
1990
Net Change
-121
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16180
5K → 10K147618-471#16180#16651
10K → 15K228195+33#16651#16618
15K → 20K34485+259#16618#16359
20K → Half4639+7#16359#16352
Half → 25K131192-61#16352#16413
25K → 30K252225+27#16413#16386
30K → 20M12388+35#16386#16351
20M → 21M84181-97#16351#16448
21M → 35K7350+23#16448#16425
35K → 23M116133-17#16425#16442
23M → 24M10165+36#16442#16406
24M → 40K8836+52#16406#16354
40K → 25.2M6014+46#16354#16308
25.2M → Finish7669+7#16308#16301
TOTALS18691990-121
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing