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BOSTON MARATHON 2025

Ken Zimmerman

Bib: 7976•M

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 34%
Gender (Male)
#0 / 16105
Top 47%
Masters (Masters Men)
#0 / 10463
Top 36%
Division (M55-59)
#0 / 1648
Top 18%
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
6:53/mi
21:22
↑ 97↓ 3451.5%
10K· 6.21 mi
7:08/mi
43:33
↑ 79↓ 1380.4%
15K· 9.32 mi
6:57/mi
1:05:10
↑ 67↓ 78
20K· 12.43 mi
7:00/mi
1:26:55
↑ 106↓ 860.1%
Half· 13.11 mi
6:53/mi
1:31:37
↑ 19↓ 370.5%
25K· 15.53 mi
7:07/mi
1:48:52
↑ 66↓ 880.2%
30K· 18.64 mi
7:21/mi
2:11:42
↑ 181↓ 1480.2%
20M
7:42/mi
2:22:10
↑ 64↓ 500.2%
21M
8:31/mi
2:30:41
↑ 106↓ 241.6%
35K· 21.75 mi
8:49/mi
2:37:17
↑ 17↓ 861.7%
23M
8:28/mi
2:47:53
↑ 23↓ 630.6%
24M
8:56/mi
2:56:49
↓ 821.3%
40K· 24.85 mi
9:40/mi
3:05:05
↓ 200.3%
25.2M
10:47/mi
3:08:48
↑ 13↓ 160.2%
Finish· 26.22 mi
9:45/mi
3:18:44
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:37
Pace6:59 /mi
2nd Half
Distance13.11 mi
Time1:47:07
Pace8:10 /mi
📊Positive Split: 16.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:30:0621:226:5321:22
6:53
-
10K
6.21 mi10:52:1743:337:0122:11
7:08
+0:15
15K
9.32 mi11:13:541:05:107:0021:37
6:57
-0:11
20K
12.43 mi11:35:391:26:557:0021:45
7:00
+0:03
Half
13.11 mi11:40:211:31:376:594:42
6:53
-0:07
25K
15.53 mi11:57:361:48:527:0017:15
7:07
+0:14
30K
18.64 mi12:20:262:11:427:0422:50
7:21
+0:14
20M
20.00 mi12:30:542:22:107:0610:28
7:42
+0:21
21M
21.00 mi12:39:252:30:417:118:31
8:31
+0:49
35K
21.75 mi12:46:012:37:177:146:36
8:49
+0:18
23M
23.00 mi12:56:372:47:537:1810:36
8:28
-0:21
24M
24.00 mi13:05:332:56:497:228:56
8:56
+0:28
40K
24.85 mi13:13:493:05:057:278:16
9:40
+0:44
25.2M
25.20 mi13:17:323:08:487:303:43
10:47
+1:07
Finish
26.22 mi13:27:283:18:447:359:56
9:45
-1:02

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

6:53 /mi

Average Pace

7:35 /mi

Slowest Pace

10:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:09:26

35% of race

Time at Steady Pace

1:12:44

37% of race

Time at Slower Pace

56:34

28% of race

Average Pace: 7:35 /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 mi10:30:0621:226:5321:22
6:53
#6894
10K
6.21 mi10:52:1743:337:0122:11
7:08
#7917
15K
9.32 mi11:13:541:05:107:0021:37
6:57
#7703
20K
12.43 mi11:35:391:26:557:0021:45
7:00
#7458
Half
13.11 mi11:40:211:31:376:594:42
6:53
#7417
25K
15.53 mi11:57:361:48:527:0017:15
7:07
#7316
30K
18.64 mi12:20:262:11:427:0422:50
7:21
#7117
20M
20.00 mi12:30:542:22:107:0610:28
7:42
#7121
21M
21.00 mi12:39:252:30:417:118:31
8:31
#7232
35K
21.75 mi12:46:012:37:177:146:36
8:49
#7556
23M
23.00 mi12:56:372:47:537:1810:36
8:28
#7805
24M
24.00 mi13:05:332:56:497:228:56
8:56
#8240
40K
24.85 mi13:13:493:05:057:278:16
9:40
#8778
25.2M
25.20 mi13:17:323:08:487:303:43
10:47
#9032
Finish
26.22 mi13:27:283:18:447:359:56
9:45
#9741
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi6894623062307359(Top 26%)6522(Top 40%)6522(Top 396%)
10K6.21 mi3.10 mi7917-10236926-6966926-6968993(Top 32%)7599(Top 47%)7599(Top 461%)
15K9.32 mi3.11 mi7703+2146779+1476779+1477359(Top 26%)6522(Top 40%)6522(Top 396%)
20K12.43 mi3.11 mi7458+2456601+1786601+1786871(Top 24%)6110(Top 38%)6110(Top 371%)
Half13.11 mi0.68 mi7417+416570+316570+316850(Top 24%)6115(Top 38%)6115(Top 371%)
25K15.53 mi2.42 mi7316+1016479+916479+917070(Top 25%)6172(Top 38%)6172(Top 375%)
30K18.64 mi3.11 mi7117+1996297+1826297+1826753(Top 24%)5822(Top 36%)5822(Top 353%)
20M20.00 mi1.36 mi7121-46270+276270+278360(Top 29%)6653(Top 41%)6653(Top 404%)
21M21.00 mi1.00 mi7232-1116311-416311-4110546(Top 37%)7635(Top 47%)7635(Top 463%)
35K21.75 mi0.75 mi7556-3246498-1876498-18717321(Top 61%)10725(Top 67%)10725(Top 651%)
23M23.00 mi1.25 mi7805-2496617-1196617-11913071(Top 46%)8722(Top 54%)8722(Top 529%)
24M24.00 mi1.00 mi8240-4356855-2386855-23816981(Top 60%)10438(Top 65%)10438(Top 633%)
40K24.85 mi0.85 mi8778-5387131-2767131-27619319(Top 68%)11466(Top 71%)11466(Top 696%)
25.2M25.20 mi0.35 mi9032-2547270-1397270-13919903(Top 70%)11725(Top 73%)11725(Top 711%)
Finish26.22 mi1.02 mi9741-7097606-3367606-33622056(Top 78%)12809(Top 80%)12809(Top 777%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21story building
+97ft-345ft

Overall

7359

Males

6522

M55-59

6522

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8993

Males

7599

M55-59

7599

10K→15K

6.2 - 9.3 mi

Top 26%
×3story building
+67ft-78ft

Overall

7359

Males

6522

M55-59

6522

15K→20K

9.3 - 12.4 mi

Top 24%
×5story building
+106ft-86ft

Overall

6871

Males

6110

M55-59

6110

20K→Half

12.4 - 13.1 mi

Top 24%
×2story building
+19ft-37ft

Overall

6850

Males

6115

M55-59

6115

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

7070

Males

6172

M55-59

6172

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6753

Males

5822

M55-59

5822

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

8360

Males

6653

M55-59

6653

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

10546

Males

7635

M55-59

7635

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

17321

Males

10725

M55-59

10725

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13071

Males

8722

M55-59

8722

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

16981

Males

10438

M55-59

10438

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19319

Males

11466

M55-59

11466

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19903

Males

11725

M55-59

11725

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

22056

Males

12809

M55-59

12809

Passing Analysis

Category:
Athletes Passed
1268
Passed By
4115
Net Change
-2847
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6894
5K → 10K201043-1023#6894#7917
10K → 15K26046+214#7917#7703
15K → 20K26924+245#7703#7458
20K → Half5110+41#7458#7417
Half → 25K15352+101#7417#7316
25K → 30K27778+199#7316#7117
30K → 20M9498-4#7117#7121
20M → 21M54165-111#7121#7232
21M → 35K9333-324#7232#7556
35K → 23M45294-249#7556#7805
23M → 24M17452-435#7805#8240
24M → 40K15553-538#8240#8778
40K → 25.2M3257-254#8778#9032
25.2M → Finish1710-709#9032#9741
TOTALS12684115-2847
📊

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