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BOSTON MARATHON 2025

Derek Nowak

Bib: 28931•M

PA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
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
7:46/mi
24:08
↑ 97↓ 3451.5%
10K· 6.21 mi
7:49/mi
48:25
↑ 79↓ 1380.4%
15K· 9.32 mi
8:07/mi
1:13:39
↑ 67↓ 78
20K· 12.43 mi
8:41/mi
1:40:39
↑ 106↓ 860.1%
Half· 13.11 mi
9:13/mi
1:46:56
↑ 19↓ 370.5%
25K· 15.53 mi
10:04/mi
2:11:20
↑ 66↓ 880.2%
30K· 18.64 mi
12:14/mi
2:49:20
↑ 181↓ 1480.2%
20M
13:04/mi
3:07:06
↑ 64↓ 500.2%
21M
15:55/mi
3:23:01
↑ 106↓ 241.6%
35K· 21.75 mi
14:09/mi
3:33:36
↑ 17↓ 861.7%
23M
14:43/mi
3:52:02
↑ 23↓ 630.6%
24M
13:34/mi
4:05:36
↓ 821.3%
40K· 24.85 mi
14:41/mi
4:18:09
↓ 200.3%
25.2M
13:38/mi
4:22:51
↑ 13↓ 160.2%
Finish· 26.22 mi
11:34/mi
4:34:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:56
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time2:47:42
Pace12:48 /mi
📊Positive Split: 56.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:0024:087:4624:08
7:46
-
10K
6.21 mi12:11:1748:257:4824:17
7:49
+0:03
15K
9.32 mi12:36:311:13:397:5425:14
8:07
+0:18
20K
12.43 mi13:03:311:40:398:0627:00
8:41
+0:34
Half
13.11 mi13:09:481:46:568:096:17
9:13
+0:32
25K
15.53 mi13:34:122:11:208:2724:24
10:04
+0:51
30K
18.64 mi14:12:122:49:209:0538:00
12:14
+2:10
20M
20.00 mi14:29:583:07:069:2117:46
13:04
+0:50
21M
21.00 mi14:45:533:23:019:4015:55
15:55
+2:51
35K
21.75 mi14:56:283:33:369:4910:35
14:09
-1:46
23M
23.00 mi15:14:543:52:0210:0518:26
14:43
+0:34
24M
24.00 mi15:28:284:05:3610:1413:34
13:34
-1:09
40K
24.85 mi15:41:014:18:0910:2312:33
14:41
+1:07
25.2M
25.20 mi15:45:434:22:5110:264:42
13:38
-1:03
Finish
26.22 mi15:57:304:34:3810:2911:47
11:34
-2:04

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

7:46 /mi

Average Pace

10:29 /mi

Slowest Pace

15:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:20

48% of race

Time at Steady Pace

1:21:07

30% of race

Time at Slower Pace

1:02:11

23% of race

Average Pace: 10:28 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:47:0024:087:4624:08
7:46
#14512
10K
6.21 mi12:11:1748:257:4824:17
7:49
#14714
15K
9.32 mi12:36:311:13:397:5425:14
8:07
#15513
20K
12.43 mi13:03:311:40:398:0627:00
8:41
#16674
Half
13.11 mi13:09:481:46:568:096:17
9:13
#17054
25K
15.53 mi13:34:122:11:208:2724:24
10:04
#18620
30K
18.64 mi14:12:122:49:209:0538:00
12:14
#21262
20M
20.00 mi14:29:583:07:069:2117:46
13:04
#22105
21M
21.00 mi14:45:533:23:019:4015:55
15:55
#22776
35K
21.75 mi14:56:283:33:369:4910:35
14:09
#23140
23M
23.00 mi15:14:543:52:0210:0518:26
14:43
#23716
24M
24.00 mi15:28:284:05:3610:1413:34
13:34
#24000
40K
24.85 mi15:41:014:18:0910:2312:33
14:41
#24283
25.2M
25.20 mi15:45:434:22:5110:264:42
13:38
#24318
Finish
26.22 mi15:57:304:34:3810:2911:47
11:34
#24423
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi14512102501025016889(Top 59%)11178(Top 69%)11178(Top 198%)
10K6.21 mi3.10 mi14714-20210299-4910299-4914964(Top 53%)10413(Top 65%)10413(Top 185%)
15K9.32 mi3.11 mi15513-79910613-31410613-31416889(Top 59%)11178(Top 69%)11178(Top 198%)
20K12.43 mi3.11 mi16674-116111084-47111084-47119366(Top 68%)12200(Top 76%)12200(Top 216%)
Half13.11 mi0.68 mi17054-38011227-14311227-14322628(Top 80%)13631(Top 85%)13631(Top 242%)
25K15.53 mi2.42 mi18620-156611865-63811865-63823420(Top 82%)13923(Top 86%)13923(Top 247%)
30K18.64 mi3.11 mi21262-264212979-111412979-111425861(Top 91%)14922(Top 93%)14922(Top 264%)
20M20.00 mi1.36 mi22105-84313348-36913348-36926522(Top 93%)15152(Top 94%)15152(Top 269%)
21M21.00 mi1.00 mi22776-67113614-26613614-26627769(Top 98%)15759(Top 98%)15759(Top 279%)
35K21.75 mi0.75 mi23140-36413774-16013774-16027755(Top 98%)15699(Top 97%)15699(Top 278%)
23M23.00 mi1.25 mi23716-57614012-23814012-23827777(Top 98%)15718(Top 98%)15718(Top 279%)
24M24.00 mi1.00 mi24000-28414132-12014132-12027379(Top 96%)15472(Top 96%)15472(Top 274%)
40K24.85 mi0.85 mi24283-28314256-12414256-12427610(Top 97%)15613(Top 97%)15613(Top 277%)
25.2M25.20 mi0.35 mi24318-3514265-914265-925835(Top 91%)14660(Top 91%)14660(Top 260%)
Finish26.22 mi1.02 mi24423-10514300-3514300-3526233(Top 92%)14898(Top 93%)14898(Top 264%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16889

Males

11178

M18-39

11178

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14964

Males

10413

M18-39

10413

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16889

Males

11178

M18-39

11178

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

19366

Males

12200

M18-39

12200

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

22628

Males

13631

M18-39

13631

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

23420

Males

13923

M18-39

13923

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

25861

Males

14922

M18-39

14922

30K→20M

18.6 - 20.0 mi

Top 93%
×5story building
+64ft-50ft

Overall

26522

Males

15152

M18-39

15152

20M→21M

20.0 - 21.0 mi

Top 98%
×8story building
+106ft-24ft

Overall

27769

Males

15759

M18-39

15759

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

27755

Males

15699

M18-39

15699

35K→23M

21.8 - 23.0 mi

Top 98%
×5story building
+23ft-63ft

Overall

27777

Males

15718

M18-39

15718

23M→24M

23.0 - 24.0 mi

Top 96%
×6story building
+12ft-82ft

Overall

27379

Males

15472

M18-39

15472

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

27610

Males

15613

M18-39

15613

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

25835

Males

14660

M18-39

14660

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

26233

Males

14898

M18-39

14898

Passing Analysis

Category:
Athletes Passed
385
Passed By
10296
Net Change
-9911
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14512
5K → 10K214416-202#14512#14714
10K → 15K49848-799#14714#15513
15K → 20K361197-1161#15513#16674
20K → Half3383-380#16674#17054
Half → 25K121578-1566#17054#18620
25K → 30K102652-2642#18620#21262
30K → 20M7850-843#21262#22105
20M → 21M8679-671#22105#22776
21M → 35K6370-364#22776#23140
35K → 23M10586-576#23140#23716
23M → 24M6290-284#23716#24000
24M → 40K4287-283#24000#24283
40K → 25.2M641-35#24283#24318
25.2M → Finish14119-105#24318#24423
TOTALS38510296-9911
📊

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