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BOSTON MARATHON 2025

Jeffrey Bywater

OR

Bib: 32388 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:03/mi
28:06
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:11/mi
56:39
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:31/mi
1:23:07
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:49/mi
1:50:29
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:34/mi
1:56:20
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:25/mi
2:19:09
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:18/mi
2:48:02
↑ 181↓ 1480.2%
138 ft elev
20M
9:09/mi
3:00:28
↑ 64↓ 500.2%
148 ft elev
21M
9:45/mi
3:10:13
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:04/mi
3:17:00
↑ 17↓ 861.7%
156 ft elev
23M
9:06/mi
3:28:24
↑ 23↓ 630.6%
116 ft elev
24M
8:59/mi
3:37:23
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:53/mi
3:44:59
↓ 200.3%
20 ft elev
25.2M
9:40/mi
3:48:19
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:19/mi
3:56:48
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:20
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time2:00:28
Pace9:11 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:4028:069:0328:06
9:03
-
10K
6.21 mi12:22:1356:399:0728:33
9:11
+0:08
15K
9.32 mi12:48:411:23:078:5526:28
8:31
-0:40
20K
12.43 mi13:16:031:50:298:5327:22
8:49
+0:18
Half
13.11 mi13:21:541:56:208:525:51
8:34
-0:15
25K
15.53 mi13:44:432:19:098:5722:49
9:25
+0:51
30K
18.64 mi14:13:362:48:029:0128:53
9:18
-0:07
20M
20.00 mi14:26:023:00:289:0112:26
9:09
-0:09
21M
21.00 mi14:35:473:10:139:039:45
9:45
+0:36
35K
21.75 mi14:42:343:17:009:036:47
9:04
-0:41
23M
23.00 mi14:53:583:28:249:0411:24
9:06
+0:02
24M
24.00 mi15:02:573:37:239:038:59
8:59
-0:07
40K
24.85 mi15:10:333:44:599:037:36
8:53
-0:06
25.2M
25.20 mi15:13:533:48:199:043:20
9:40
+0:47
Finish
26.22 mi15:22:223:56:489:028:29
8:19
-1:21

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

8:19 /mi

Average Pace

9:02 /mi

Slowest Pace

9:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:02

55% of race

Time at Steady Pace

1:45:46

45% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:02 /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 mi11:53:4028:069:0328:06
9:03
#22606
10K
6.21 mi12:22:1356:399:0728:33
9:11
#22875
15K
9.32 mi12:48:411:23:078:5526:28
8:31
#21894
20K
12.43 mi13:16:031:50:298:5327:22
8:49
#21389
Half
13.11 mi13:21:541:56:208:525:51
8:34
#21291
25K
15.53 mi13:44:432:19:098:5722:49
9:25
#21367
30K
18.64 mi14:13:362:48:029:0128:53
9:18
#20935
20M
20.00 mi14:26:023:00:289:0112:26
9:09
#20655
21M
21.00 mi14:35:473:10:139:039:45
9:45
#20470
35K
21.75 mi14:42:343:17:009:036:47
9:04
#20389
23M
23.00 mi14:53:583:28:249:0411:24
9:06
#20187
24M
24.00 mi15:02:573:37:239:038:59
8:59
#20085
40K
24.85 mi15:10:333:44:599:037:36
8:53
#19933
25.2M
25.20 mi15:13:533:48:199:043:20
9:40
#19859
Finish
26.22 mi15:22:223:56:489:028:29
8:19
#19703
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi226061358113581194331224412244
10K6.21 mi3.10 mi22875-26913726-14513726-145231461387113871
15K9.32 mi3.11 mi21894+98113293+43313293+433194331224412244
20K12.43 mi3.11 mi21389+50513075+21813075+218199681244912449
Half13.11 mi0.68 mi21291+9813037+3813037+38196541232812328
25K15.53 mi2.42 mi21367-7613054-1713054-17215691310713107
30K18.64 mi3.11 mi20935+43212825+22912825+229190921187411874
20M20.00 mi1.36 mi20655+28012679+14612679+146175261105411054
21M21.00 mi1.00 mi20470+18512575+10412575+104172491080810808
35K21.75 mi0.75 mi20389+8112528+4712528+47185541128511285
23M23.00 mi1.25 mi20187+20212414+11412414+114168371044910449
24M24.00 mi1.00 mi20085+10212348+6612348+66172761060610606
40K24.85 mi0.85 mi19933+15212258+9012258+901569497739773
25.2M25.20 mi0.35 mi19859+7412214+4412214+441542696219621
Finish26.22 mi1.02 mi19703+15612128+8612128+861507095209520

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

19433

Males

12244

M45-49

12244

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

23146

Males

13871

M45-49

13871

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

19433

Males

12244

M45-49

12244

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

19968

Males

12449

M45-49

12449

20K→Half

12.4 - 13.1 mi

Top 69%
×2story building
+19ft-37ft

Overall

19654

Males

12328

M45-49

12328

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21569

Males

13107

M45-49

13107

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

19092

Males

11874

M45-49

11874

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

17526

Males

11054

M45-49

11054

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

17249

Males

10808

M45-49

10808

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

18554

Males

11285

M45-49

11285

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

16837

Males

10449

M45-49

10449

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

17276

Males

10606

M45-49

10606

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15694

Males

9773

M45-49

9773

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15426

Males

9621

M45-49

9621

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

15070

Males

9520

M45-49

9520

Passing Analysis

Category:
Athletes Passed
3644
Passed By
741
Net Change
+2903
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22606
5K → 10K140409-269#22606#22875
10K → 15K9865+981#22875#21894
15K → 20K52318+505#21894#21389
20K → Half1079+98#21389#21291
Half → 25K128204-76#21291#21367
25K → 30K45321+432#21367#20935
30K → 20M29010+280#20935#20655
20M → 21M1949+185#20655#20470
21M → 35K9918+81#20470#20389
35K → 23M21715+202#20389#20187
23M → 24M11513+102#20187#20085
24M → 40K1542+152#20085#19933
40K → 25.2M751+74#19933#19859
25.2M → Finish1637+156#19859#19703
TOTALS3644741+2903

Passing Charts

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