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BOSTON MARATHON 2025

Sebastian Duda

Bib: 29847•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 3%
Gender (Male)
#0 / 16105
Top 5%
Division (M18-39)
#0 / 5642
Top 12%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:28
Rank: #912
Start → 5K
5:57/mi
18:28 split
10K· 6.21 mi
37:41
Rank: #1274 (-362)
5K → 10K
6:11/mi
19:13 split
15K· 9.32 mi
56:53
Rank: #1409 (-135)
10K → 15K
6:11/mi
19:12 split
20K· 12.43 mi
1:16:07
Rank: #1424 (-15)
15K → 20K
6:11/mi
19:14 split
Half· 13.11 mi
1:20:11
Rank: #1401 (+23)
20K → Half
5:58/mi
4:04 split
25K· 15.53 mi
1:34:55
Rank: #1314 (+87)
Half → 25K
6:05/mi
14:44 split
30K· 18.64 mi
1:54:15
Rank: #1226 (+88)
25K → 30K
6:13/mi
19:20 split
20M
2:02:42
Rank: #1163 (+63)
30K → 20M
6:13/mi
8:27 split
21M
2:09:22
Rank: #1134 (+29)
20M → 21M
6:40/mi
6:40 split
35K· 21.75 mi
2:13:49
Rank: #1096 (+38)
21M → 35K
5:57/mi
4:27 split
23M
2:21:15
Rank: #976 (+120)
35K → 23M
5:56/mi
7:26 split
24M
2:27:00
Rank: #929 (+47)
23M → 24M
5:45/mi
5:45 split
40K· 24.85 mi
2:32:06
Rank: #886 (+43)
24M → 40K
5:58/mi
5:06 split
25.2M
2:34:22
Rank: #867 (+19)
40K → 25.2M
6:34/mi
2:16 split
Finish· 26.22 mi
2:40:18
Rank: #835 (+32)
25.2M → Finish
5:49/mi
5:56 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:20:11
Pace6:07 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:20:07
Pace6:07 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:35:4318:285:5718:28
5:57
-
10K
6.21 mi11:54:5637:416:0419:13
6:11
+0:14
15K
9.32 mi12:14:0856:536:0619:12
6:11
0:00
20K
12.43 mi12:33:221:16:076:0719:14
6:11
0:00
Half
13.11 mi12:37:261:20:116:074:04
5:58
-0:13
25K
15.53 mi12:52:101:34:556:0714:44
6:05
+0:07
30K
18.64 mi13:11:301:54:156:0819:20
6:13
+0:08
20M
20.00 mi13:19:572:02:426:088:27
6:13
0:00
21M
21.00 mi13:26:372:09:226:106:40
6:40
+0:27
35K
21.75 mi13:31:042:13:496:094:27
5:57
-0:43
23M
23.00 mi13:38:302:21:156:087:26
5:56
-0:01
24M
24.00 mi13:44:152:27:006:085:45
5:45
-0:11
40K
24.85 mi13:49:212:32:066:075:06
5:58
+0:13
25.2M
25.20 mi13:51:372:34:226:082:16
6:34
+0:36
Finish
26.22 mi13:57:332:40:186:075:56
5:49
-0:45

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

5:45 /mi

Average Pace

6:07 /mi

Slowest Pace

6:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:22

94% of race

Time at Steady Pace

8:56

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:07 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:35:4318:285:5718:28
5:57
#912
10K
6.21 mi11:54:5637:416:0419:13
6:11
#1274
15K
9.32 mi12:14:0856:536:0619:12
6:11
#1409
20K
12.43 mi12:33:221:16:076:0719:14
6:11
#1424
Half
13.11 mi12:37:261:20:116:074:04
5:58
#1401
25K
15.53 mi12:52:101:34:556:0714:44
6:05
#1314
30K
18.64 mi13:11:301:54:156:0819:20
6:13
#1226
20M
20.00 mi13:19:572:02:426:088:27
6:13
#1163
21M
21.00 mi13:26:372:09:226:106:40
6:40
#1134
35K
21.75 mi13:31:042:13:496:094:27
5:57
#1096
23M
23.00 mi13:38:302:21:156:087:26
5:56
#976
24M
24.00 mi13:44:152:27:006:085:45
5:45
#929
40K
24.85 mi13:49:212:32:066:075:06
5:58
#886
25.2M
25.20 mi13:51:372:34:226:082:16
6:34
#867
Finish
26.22 mi13:57:332:40:186:075:56
5:49
#835
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9128548541735(Top 6%)1648(Top 10%)1648(Top 29%)
10K6.21 mi3.10 mi1274-3621211-3571211-3571820(Top 6%)1728(Top 11%)1728(Top 31%)
15K9.32 mi3.11 mi1409-1351338-1271338-1271735(Top 6%)1648(Top 10%)1648(Top 29%)
20K12.43 mi3.11 mi1424-151350-121350-121534(Top 5%)1455(Top 9%)1455(Top 26%)
Half13.11 mi0.68 mi1401+231329+211329+211001(Top 4%)948(Top 6%)948(Top 17%)
25K15.53 mi2.42 mi1314+871244+851244+851011(Top 4%)954(Top 6%)954(Top 17%)
30K18.64 mi3.11 mi1226+881158+861158+86980(Top 3%)922(Top 6%)922(Top 16%)
20M20.00 mi1.36 mi1163+631097+611097+61775(Top 3%)732(Top 5%)732(Top 13%)
21M21.00 mi1.00 mi1134+291069+281069+281090(Top 4%)1029(Top 6%)1029(Top 18%)
35K21.75 mi0.75 mi1096+381033+361033+36622(Top 2%)581(Top 4%)581(Top 10%)
23M23.00 mi1.25 mi976+120918+115918+115279(Top 1.0%)260(Top 2%)260(Top 5%)
24M24.00 mi1.00 mi929+47872+46872+46239(Top 0.8%)219(Top 1%)219(Top 4%)
40K24.85 mi0.85 mi886+43830+42830+42351(Top 1%)325(Top 2%)325(Top 6%)
25.2M25.20 mi0.35 mi867+19812+18812+18561(Top 2%)521(Top 3%)521(Top 9%)
Finish26.22 mi1.02 mi835+32781+31781+31551(Top 2%)516(Top 3%)516(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21story building
+97ft-345ft

Overall

1735

Males

1648

M18-39

1648

5K→10K

3.1 - 6.2 mi

Top 6%
×5story building
+79ft-138ft

Overall

1820

Males

1728

M18-39

1728

10K→15K

6.2 - 9.3 mi

Top 6%
×3story building
+67ft-78ft

Overall

1735

Males

1648

M18-39

1648

15K→20K

9.3 - 12.4 mi

Top 5%
×5story building
+106ft-86ft

Overall

1534

Males

1455

M18-39

1455

20K→Half

12.4 - 13.1 mi

Top 4%
×2story building
+19ft-37ft

Overall

1001

Males

948

M18-39

948

Half→25K

13.1 - 15.5 mi

Top 4%
×4story building
+66ft-88ft

Overall

1011

Males

954

M18-39

954

25K→30K

15.5 - 18.6 mi

Top 3%
×9story building
+181ft-148ft

Overall

980

Males

922

M18-39

922

30K→20M

18.6 - 20.0 mi

Top 3%
×5story building
+64ft-50ft

Overall

775

Males

732

M18-39

732

20M→21M

20.0 - 21.0 mi

Top 4%
×8story building
+106ft-24ft

Overall

1090

Males

1029

M18-39

1029

21M→35K

21.0 - 21.8 mi

Top 2%
×7story building
+17ft-86ft

Overall

622

Males

581

M18-39

581

35K→23M

21.8 - 23.0 mi

Top 1.0%
×5story building
+23ft-63ft

Overall

279

Males

260

M18-39

260

23M→24M

23.0 - 24.0 mi

Top 0.8%
×6story building
+12ft-82ft

Overall

239

Males

219

M18-39

219

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

351

Males

325

M18-39

325

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

561

Males

521

M18-39

521

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2story building
+22ft-21ft

Overall

551

Males

516

M18-39

516

Passing Analysis

Category:
Athletes Passed
692
Passed By
615
Net Change
+77
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#912
5K → 10K3365-362#912#1274
10K → 15K19154-135#1274#1409
15K → 20K4459-15#1409#1424
20K → Half230+23#1424#1401
Half → 25K925+87#1401#1314
25K → 30K968+88#1314#1226
30K → 20M663+63#1226#1163
20M → 21M4415+29#1163#1134
21M → 35K380+38#1134#1096
35K → 23M1200+120#1096#976
23M → 24M481+47#976#929
24M → 40K441+43#929#886
40K → 25.2M201+19#886#867
25.2M → Finish353+32#867#835
TOTALS692615+77
📊

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