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BOSTON MARATHON 2025

Nicholas Jazdzewski

Bib: 3776•M

WI

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Male)
#0 / 16105
Top 13%
Division (M18-39)
#0 / 5642
Top 31%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
19:18
Rank: #1928
Start → 5K
19:18 | 6:13/mi
10K· 6.21 mi
38:21
Rank: #1735 (+193)
5K → 10K
19:03 | 6:08/mi
15K· 9.32 mi
57:28
Rank: #1682 (+53)
10K → 15K
19:07 | 6:09/mi
20K· 12.43 mi
1:17:09
Rank: #1794 (-112)
15K → 20K
19:41 | 6:20/mi
Half· 13.11 mi
1:21:24
Rank: #1810 (-16)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:36:52
Rank: #1862 (-52)
Half → 25K
15:28 | 6:23/mi
30K· 18.64 mi
1:57:22
Rank: #1925 (-63)
25K → 30K
20:30 | 6:36/mi
20M
2:06:24
Rank: #1931 (-6)
30K → 20M
9:02 | 6:39/mi
21M
2:13:35
Rank: #1957 (-26)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:18:28
Rank: #1965 (-8)
21M → 35K
4:53 | 6:32/mi
23M
2:27:19
Rank: #2044 (-79)
35K → 23M
8:51 | 7:04/mi
24M
2:34:01
Rank: #2051 (-7)
23M → 24M
6:42 | 6:42/mi
40K· 24.85 mi
2:40:02
Rank: #2088 (-37)
24M → 40K
6:01 | 7:02/mi
25.2M
2:42:44
Rank: #2121 (-33)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
2:49:39
Rank: #2205 (-84)
25.2M → Finish
6:55 | 6:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:24
Pace6:13 /mi
2nd Half
Distance13.11 mi
Time1:28:15
Pace6:44 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3519:186:1319:18
6:13
-
10K
6.21 mi10:40:3838:216:1019:03
6:08
-0:05
15K
9.32 mi10:59:4557:286:1019:07
6:09
+0:01
20K
12.43 mi11:19:261:17:096:1219:41
6:20
+0:11
Half
13.11 mi11:23:411:21:246:134:15
6:14
-0:06
25K
15.53 mi11:39:091:36:526:1415:28
6:23
+0:09
30K
18.64 mi11:59:391:57:226:1820:30
6:36
+0:13
20M
20.00 mi12:08:412:06:246:199:02
6:39
+0:03
21M
21.00 mi12:15:522:13:356:227:11
7:11
+0:32
35K
21.75 mi12:20:452:18:286:224:53
6:32
-0:39
23M
23.00 mi12:29:362:27:196:248:51
7:04
+0:32
24M
24.00 mi12:36:182:34:016:256:42
6:42
-0:22
40K
24.85 mi12:42:192:40:026:266:01
7:02
+0:20
25.2M
25.20 mi12:45:012:42:446:272:42
7:50
+0:48
Finish
26.22 mi12:51:562:49:396:296:55
6:47
-1:03

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

6:08 /mi

Average Pace

6:29 /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

1:21:24

48% of race

Time at Steady Pace

1:03:30

37% of race

Time at Slower Pace

24:45

15% of race

Average Pace: 6:28 /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 mi10:21:3519:186:1319:18
6:13
#1928
10K
6.21 mi10:40:3838:216:1019:03
6:08
#1735
15K
9.32 mi10:59:4557:286:1019:07
6:09
#1682
20K
12.43 mi11:19:261:17:096:1219:41
6:20
#1794
Half
13.11 mi11:23:411:21:246:134:15
6:14
#1810
25K
15.53 mi11:39:091:36:526:1415:28
6:23
#1862
30K
18.64 mi11:59:391:57:226:1820:30
6:36
#1925
20M
20.00 mi12:08:412:06:246:199:02
6:39
#1931
21M
21.00 mi12:15:522:13:356:227:11
7:11
#1957
35K
21.75 mi12:20:452:18:286:224:53
6:32
#1965
23M
23.00 mi12:29:362:27:196:248:51
7:04
#2044
24M
24.00 mi12:36:182:34:016:256:42
6:42
#2051
40K
24.85 mi12:42:192:40:026:266:01
7:02
#2088
25.2M
25.20 mi12:45:012:42:446:272:42
7:50
#2121
Finish
26.22 mi12:51:562:49:396:296:55
6:47
#2205
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1928183418341619(Top 6%)1536(Top 10%)1536(Top 27%)
10K6.21 mi3.10 mi1735+1931650+1841650+1841591(Top 6%)1514(Top 9%)1514(Top 27%)
15K9.32 mi3.11 mi1682+531599+511599+511619(Top 6%)1536(Top 10%)1536(Top 27%)
20K12.43 mi3.11 mi1794-1121705-1061705-1062185(Top 8%)2084(Top 13%)2084(Top 37%)
Half13.11 mi0.68 mi1810-161721-161721-162121(Top 7%)2025(Top 13%)2025(Top 36%)
25K15.53 mi2.42 mi1862-521773-521773-522249(Top 8%)2139(Top 13%)2139(Top 38%)
30K18.64 mi3.11 mi1925-631833-601833-602399(Top 8%)2271(Top 14%)2271(Top 40%)
20M20.00 mi1.36 mi1931-61838-51838-52211(Top 8%)2089(Top 13%)2089(Top 37%)
21M21.00 mi1.00 mi1957-261861-231861-233037(Top 11%)2802(Top 17%)2802(Top 50%)
35K21.75 mi0.75 mi1965-81868-71868-72563(Top 9%)2382(Top 15%)2382(Top 42%)
23M23.00 mi1.25 mi2044-791943-751943-754119(Top 15%)3663(Top 23%)3663(Top 65%)
24M24.00 mi1.00 mi2051-71948-51948-52956(Top 10%)2680(Top 17%)2680(Top 48%)
40K24.85 mi0.85 mi2088-371982-341982-344083(Top 14%)3541(Top 22%)3541(Top 63%)
25.2M25.20 mi0.35 mi2121-332014-322014-324919(Top 17%)4036(Top 25%)4036(Top 72%)
Finish26.22 mi1.02 mi2205-842090-762090-764387(Top 15%)3703(Top 23%)3703(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1619

Males

1536

M18-39

1536

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1591

Males

1514

M18-39

1514

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1619

Males

1536

M18-39

1536

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2185

Males

2084

M18-39

2084

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

2121

Males

2025

M18-39

2025

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2249

Males

2139

M18-39

2139

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2399

Males

2271

M18-39

2271

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2211

Males

2089

M18-39

2089

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3037

Males

2802

M18-39

2802

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2563

Males

2382

M18-39

2382

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

4119

Males

3663

M18-39

3663

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2956

Males

2680

M18-39

2680

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

4083

Males

3541

M18-39

3541

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4919

Males

4036

M18-39

4036

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4387

Males

3703

M18-39

3703

Passing Analysis

Category:
Athletes Passed
636
Passed By
913
Net Change
-277
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1928
5K → 10K22027+193#1928#1735
10K → 15K9138+53#1735#1682
15K → 20K27139-112#1682#1794
20K → Half521-16#1794#1810
Half → 25K3385-52#1810#1862
25K → 30K65128-63#1862#1925
30K → 20M3440-6#1925#1931
20M → 21M2955-26#1931#1957
21M → 35K2432-8#1957#1965
35K → 23M27106-79#1965#2044
23M → 24M3744-7#2044#2051
24M → 40K2663-37#2051#2088
40K → 25.2M639-33#2088#2121
25.2M → Finish1296-84#2121#2205
TOTALS636913-277
📊

Passing Visuals

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing