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BOSTON MARATHON 2025

Zachary Nowak

Bib: 1598•M

PA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 14%
Gender (Male)
#0 / 16105
Top 23%
Division (M18-39)
#0 / 5642
Top 48%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:11/mi
19:13
↑ 97↓ 3451.5%
10K· 6.21 mi
6:08/mi
38:17
↑ 79↓ 1380.4%
15K· 9.32 mi
6:11/mi
57:31
↑ 67↓ 78
20K· 12.43 mi
6:18/mi
1:17:06
↑ 106↓ 860.1%
Half· 13.11 mi
6:09/mi
1:21:18
↑ 19↓ 370.5%
25K· 15.53 mi
6:20/mi
1:36:40
↑ 66↓ 880.2%
30K· 18.64 mi
6:45/mi
1:57:38
↑ 181↓ 1480.2%
20M
7:05/mi
2:07:15
↑ 64↓ 500.2%
21M
8:14/mi
2:15:29
↑ 106↓ 241.6%
35K· 21.75 mi
7:26/mi
2:21:03
↑ 17↓ 861.7%
23M
8:05/mi
2:31:10
↑ 23↓ 630.6%
24M
8:03/mi
2:39:13
↓ 821.3%
40K· 24.85 mi
8:08/mi
2:46:10
↓ 200.3%
25.2M
10:09/mi
2:49:40
↑ 13↓ 160.2%
Finish· 26.22 mi
7:56/mi
2:57:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:18
Pace6:12 /mi
2nd Half
Distance13.11 mi
Time1:36:27
Pace7:21 /mi
📊Positive Split: 18.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:5319:136:1119:13
6:11
-
10K
6.21 mi10:38:5738:176:1019:04
6:08
-0:03
15K
9.32 mi10:58:1157:316:1019:14
6:11
+0:03
20K
12.43 mi11:17:461:17:066:1219:35
6:18
+0:07
Half
13.11 mi11:21:581:21:186:124:12
6:09
-0:09
25K
15.53 mi11:37:201:36:406:1315:22
6:20
+0:11
30K
18.64 mi11:58:181:57:386:1920:58
6:45
+0:25
20M
20.00 mi12:07:552:07:156:229:37
7:05
+0:20
21M
21.00 mi12:16:092:15:296:278:14
8:14
+1:09
35K
21.75 mi12:21:432:21:036:295:34
7:26
-0:48
23M
23.00 mi12:31:502:31:106:3410:07
8:05
+0:39
24M
24.00 mi12:39:532:39:136:388:03
8:03
-0:02
40K
24.85 mi12:46:502:46:106:416:57
8:08
+0:05
25.2M
25.20 mi12:50:202:49:406:443:30
10:09
+2:01
Finish
26.22 mi12:58:252:57:456:478:05
7:56
-2:13

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

6:47 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:40

54% of race

Time at Steady Pace

36:09

20% of race

Time at Slower Pace

44:56

25% of race

Average Pace: 6:47 /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 mi10:19:5319:136:1119:13
6:11
#1779
10K
6.21 mi10:38:5738:176:1019:04
6:08
#1683
15K
9.32 mi10:58:1157:316:1019:14
6:11
#1713
20K
12.43 mi11:17:461:17:066:1219:35
6:18
#1777
Half
13.11 mi11:21:581:21:186:124:12
6:09
#1774
25K
15.53 mi11:37:201:36:406:1315:22
6:20
#1803
30K
18.64 mi11:58:181:57:386:1920:58
6:45
#1987
20M
20.00 mi12:07:552:07:156:229:37
7:05
#2135
21M
21.00 mi12:16:092:15:296:278:14
8:14
#2391
35K
21.75 mi12:21:432:21:036:295:34
7:26
#2564
23M
23.00 mi12:31:502:31:106:3410:07
8:05
#2897
24M
24.00 mi12:39:532:39:136:388:03
8:03
#3185
40K
24.85 mi12:46:502:46:106:416:57
8:08
#3422
25.2M
25.20 mi12:50:202:49:406:443:30
10:09
#3646
Finish
26.22 mi12:58:252:57:456:478:05
7:56
#3969
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1779169016901819(Top 6%)1730(Top 11%)1730(Top 31%)
10K6.21 mi3.10 mi1683+961602+881602+881620(Top 6%)1542(Top 10%)1542(Top 27%)
15K9.32 mi3.11 mi1713-301629-271629-271819(Top 6%)1730(Top 11%)1730(Top 31%)
20K12.43 mi3.11 mi1777-641690-611690-612027(Top 7%)1932(Top 12%)1932(Top 34%)
Half13.11 mi0.68 mi1774+31686+41686+41776(Top 6%)1692(Top 11%)1692(Top 30%)
25K15.53 mi2.42 mi1803-291715-291715-292053(Top 7%)1956(Top 12%)1956(Top 35%)
30K18.64 mi3.11 mi1987-1841892-1771892-1773133(Top 11%)2940(Top 18%)2940(Top 52%)
20M20.00 mi1.36 mi2135-1482033-1412033-1414521(Top 16%)4105(Top 25%)4105(Top 73%)
21M21.00 mi1.00 mi2391-2562279-2462279-2468735(Top 31%)6654(Top 41%)6654(Top 118%)
35K21.75 mi0.75 mi2564-1732442-1632442-1638134(Top 29%)6357(Top 39%)6357(Top 113%)
23M23.00 mi1.25 mi2897-3332745-3032745-30310568(Top 37%)7504(Top 47%)7504(Top 133%)
24M24.00 mi1.00 mi3185-2883006-2613006-26111547(Top 41%)7912(Top 49%)7912(Top 140%)
40K24.85 mi0.85 mi3422-2373209-2033209-20311026(Top 39%)7562(Top 47%)7562(Top 134%)
25.2M25.20 mi0.35 mi3646-2243401-1923401-19217583(Top 62%)10606(Top 66%)10606(Top 188%)
Finish26.22 mi1.02 mi3969-3233668-2673668-26712364(Top 44%)8197(Top 51%)8197(Top 145%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21story building
+97ft-345ft

Overall

1819

Males

1730

M18-39

1730

5K→10K

3.1 - 6.2 mi

Top 6%
×5story building
+79ft-138ft

Overall

1620

Males

1542

M18-39

1542

10K→15K

6.2 - 9.3 mi

Top 6%
×3story building
+67ft-78ft

Overall

1819

Males

1730

M18-39

1730

15K→20K

9.3 - 12.4 mi

Top 7%
×5story building
+106ft-86ft

Overall

2027

Males

1932

M18-39

1932

20K→Half

12.4 - 13.1 mi

Top 6%
×2story building
+19ft-37ft

Overall

1776

Males

1692

M18-39

1692

Half→25K

13.1 - 15.5 mi

Top 7%
×4story building
+66ft-88ft

Overall

2053

Males

1956

M18-39

1956

25K→30K

15.5 - 18.6 mi

Top 11%
×9story building
+181ft-148ft

Overall

3133

Males

2940

M18-39

2940

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4521

Males

4105

M18-39

4105

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8735

Males

6654

M18-39

6654

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

8134

Males

6357

M18-39

6357

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

10568

Males

7504

M18-39

7504

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11547

Males

7912

M18-39

7912

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

11026

Males

7562

M18-39

7562

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17583

Males

10606

M18-39

10606

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

12364

Males

8197

M18-39

8197

Passing Analysis

Category:
Athletes Passed
382
Passed By
2572
Net Change
-2190
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1779
5K → 10K13741+96#1779#1683
10K → 15K5080-30#1683#1713
15K → 20K40104-64#1713#1777
20K → Half118+3#1777#1774
Half → 25K4372-29#1774#1803
25K → 30K38222-184#1803#1987
30K → 20M8156-148#1987#2135
20M → 21M12268-256#2135#2391
21M → 35K7180-173#2391#2564
35K → 23M10343-333#2564#2897
23M → 24M7295-288#2897#3185
24M → 40K8245-237#3185#3422
40K → 25.2M4228-224#3422#3646
25.2M → Finish7330-323#3646#3969
TOTALS3822572-2190
📊

Passing Visuals

Category:
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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