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BOSTON MARATHON 2025

Chad Rosenberg

Bib: 28750•M

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
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
9:36/mi
29:49
↑ 97↓ 3451.5%
10K· 6.21 mi
9:36/mi
59:39
↑ 79↓ 1380.4%
15K· 9.32 mi
9:46/mi
1:30:01
↑ 67↓ 78
20K· 12.43 mi
9:45/mi
2:00:19
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
2:06:13
↑ 19↓ 370.5%
25K· 15.53 mi
10:55/mi
2:32:41
↑ 66↓ 880.2%
30K· 18.64 mi
11:47/mi
3:09:18
↑ 181↓ 1480.2%
20M
12:31/mi
3:26:19
↑ 64↓ 500.2%
21M
13:25/mi
3:39:44
↑ 106↓ 241.6%
35K· 21.75 mi
12:06/mi
3:48:47
↑ 17↓ 861.7%
23M
10:48/mi
4:02:18
↑ 23↓ 630.6%
24M
10:58/mi
4:13:16
↓ 821.3%
40K· 24.85 mi
11:17/mi
4:22:55
↓ 200.3%
25.2M
12:11/mi
4:27:07
↑ 13↓ 160.2%
Finish· 26.22 mi
10:04/mi
4:37:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:13
Pace9:38 /mi
2nd Half
Distance13.11 mi
Time2:31:10
Pace11:32 /mi
📊Positive Split: 19.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:3129:499:3629:49
9:36
-
10K
6.21 mi12:23:2159:399:3629:50
9:36
0:00
15K
9.32 mi12:53:431:30:019:3930:22
9:46
+0:10
20K
12.43 mi13:24:012:00:199:4130:18
9:45
-0:01
Half
13.11 mi13:29:552:06:139:385:54
8:39
-1:06
25K
15.53 mi13:56:232:32:419:5026:28
10:55
+2:16
30K
18.64 mi14:33:003:09:1810:0936:37
11:47
+0:52
20M
20.00 mi14:50:013:26:1910:1917:01
12:31
+0:44
21M
21.00 mi15:03:263:39:4410:2813:25
13:25
+0:54
35K
21.75 mi15:12:293:48:4710:319:03
12:06
-1:19
23M
23.00 mi15:26:004:02:1810:3213:31
10:48
-1:18
24M
24.00 mi15:36:584:13:1610:3310:58
10:58
+0:10
40K
24.85 mi15:46:374:22:5510:359:39
11:17
+0:19
25.2M
25.20 mi15:50:494:27:0710:364:12
12:11
+0:54
Finish
26.22 mi16:01:054:37:2310:3510:16
10:04
-2:07

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

8:39 /mi

Average Pace

10:35 /mi

Slowest Pace

13:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:29

49% of race

Time at Steady Pace

1:00:36

22% of race

Time at Slower Pace

1:20:18

29% of race

Average Pace: 10:35 /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 mi11:53:3129:499:3629:49
9:36
#24549
10K
6.21 mi12:23:2159:399:3629:50
9:36
#24453
15K
9.32 mi12:53:431:30:019:3930:22
9:46
#24457
20K
12.43 mi13:24:012:00:199:4130:18
9:45
#24255
Half
13.11 mi13:29:552:06:139:385:54
8:39
#24089
25K
15.53 mi13:56:232:32:419:5026:28
10:55
#24323
30K
18.64 mi14:33:003:09:1810:0936:37
11:47
#24562
20M
20.00 mi14:50:013:26:1910:1917:01
12:31
#24721
21M
21.00 mi15:03:263:39:4410:2813:25
13:25
#24786
35K
21.75 mi15:12:293:48:4710:319:03
12:06
#24848
23M
23.00 mi15:26:004:02:1810:3213:31
10:48
#24758
24M
24.00 mi15:36:584:13:1610:3310:58
10:58
#24734
40K
24.85 mi15:46:374:22:5510:359:39
11:17
#24697
25.2M
25.20 mi15:50:494:27:0710:364:12
12:11
#24687
Finish
26.22 mi16:01:054:37:2310:3510:16
10:04
#24642
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi24549145071450724493(Top 86%)14478(Top 90%)14478(Top 725%)
10K6.21 mi3.10 mi24453+9614466+4114466+4124366(Top 86%)14411(Top 89%)14411(Top 722%)
15K9.32 mi3.11 mi24457-414458+814458+824493(Top 86%)14478(Top 90%)14478(Top 725%)
20K12.43 mi3.11 mi24255+20214357+10114357+10123633(Top 83%)14073(Top 87%)14073(Top 705%)
Half13.11 mi0.68 mi24089+16614284+7314284+7320061(Top 71%)12502(Top 78%)12502(Top 626%)
25K15.53 mi2.42 mi24323-23414367-8314367-8325084(Top 88%)14682(Top 91%)14682(Top 736%)
30K18.64 mi3.11 mi24562-23914462-9514462-9525286(Top 89%)14670(Top 91%)14670(Top 735%)
20M20.00 mi1.36 mi24721-15914518-5614518-5625931(Top 91%)14887(Top 92%)14887(Top 746%)
21M21.00 mi1.00 mi24786-6514540-2214540-2225573(Top 90%)14663(Top 91%)14663(Top 735%)
35K21.75 mi0.75 mi24848-6214556-1614556-1625996(Top 92%)14828(Top 92%)14828(Top 743%)
23M23.00 mi1.25 mi24758+9014500+5614500+5622741(Top 80%)13221(Top 82%)13221(Top 662%)
24M24.00 mi1.00 mi24734+2414468+3214468+3223924(Top 84%)13791(Top 86%)13791(Top 691%)
40K24.85 mi0.85 mi24697+3714441+2714441+2723736(Top 84%)13630(Top 85%)13630(Top 683%)
25.2M25.20 mi0.35 mi24687+1014433+814433+823564(Top 83%)13554(Top 84%)13554(Top 679%)
Finish26.22 mi1.02 mi24642+4514406+2714406+2723145(Top 81%)13350(Top 83%)13350(Top 669%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

24493

Males

14478

M50-54

14478

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

24366

Males

14411

M50-54

14411

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

24493

Males

14478

M50-54

14478

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

23633

Males

14073

M50-54

14073

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

20061

Males

12502

M50-54

12502

Half→25K

13.1 - 15.5 mi

Top 88%
×4story building
+66ft-88ft

Overall

25084

Males

14682

M50-54

14682

25K→30K

15.5 - 18.6 mi

Top 89%
×9story building
+181ft-148ft

Overall

25286

Males

14670

M50-54

14670

30K→20M

18.6 - 20.0 mi

Top 91%
×5story building
+64ft-50ft

Overall

25931

Males

14887

M50-54

14887

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

25573

Males

14663

M50-54

14663

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

25996

Males

14828

M50-54

14828

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22741

Males

13221

M50-54

13221

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

23924

Males

13791

M50-54

13791

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23736

Males

13630

M50-54

13630

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23564

Males

13554

M50-54

13554

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2story building
+22ft-21ft

Overall

23145

Males

13350

M50-54

13350

Passing Analysis

Category:
Athletes Passed
1276
Passed By
1369
Net Change
-93
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24549
5K → 10K255159+96#24549#24453
10K → 15K141145-4#24453#24457
15K → 20K24644+202#24457#24255
20K → Half1660+166#24255#24089
Half → 25K57291-234#24089#24323
25K → 30K65304-239#24323#24562
30K → 20M20179-159#24562#24721
20M → 21M2893-65#24721#24786
21M → 35K2183-62#24786#24848
35K → 23M977+90#24848#24758
23M → 24M5632+24#24758#24734
24M → 40K5114+37#24734#24697
40K → 25.2M177+10#24697#24687
25.2M → Finish5611+45#24687#24642
TOTALS12761369-93
📊

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