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BOSTON MARATHON 2025

Brian Ditzler

Bib: 1306•M

PR

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 14%
Gender (Male)
#0 / 16105
Top 22%
Masters (Masters Men)
#0 / 10463
Top 9%
Division (M45-49)
#0 / 2386
Top 11%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:20
Rank: #1989
Start → 5K
19:20 | 6:13/mi
10K· 6.21 mi
38:35
Rank: #1923 (+66)
5K → 10K
19:15 | 6:12/mi
15K· 9.32 mi
57:45
Rank: #1831 (+92)
10K → 15K
19:10 | 6:10/mi
20K· 12.43 mi
1:17:06
Rank: #1776 (+55)
15K → 20K
19:21 | 6:14/mi
Half· 13.11 mi
1:21:21
Rank: #1793 (-17)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:36:45
Rank: #1828 (-35)
Half → 25K
15:24 | 6:21/mi
30K· 18.64 mi
1:57:42
Rank: #2003 (-175)
25K → 30K
20:57 | 6:45/mi
20M
2:07:03
Rank: #2084 (-81)
30K → 20M
9:21 | 6:53/mi
21M
2:14:48
Rank: #2239 (-155)
20M → 21M
7:45 | 7:45/mi
35K· 21.75 mi
2:20:02
Rank: #2309 (-70)
21M → 35K
5:14 | 7:00/mi
23M
2:29:47
Rank: #2583 (-274)
35K → 23M
9:45 | 7:47/mi
24M
2:38:11
Rank: #2949 (-366)
23M → 24M
8:24 | 8:24/mi
40K· 24.85 mi
2:46:17
Rank: #3449 (-500)
24M → 40K
8:06 | 9:28/mi
25.2M
2:49:44
Rank: #3663 (-214)
40K → 25.2M
3:27 | 10:00/mi
Finish· 26.22 mi
2:57:25
Rank: #3863 (-200)
25.2M → Finish
7:41 | 7:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:21
Pace6:12 /mi
2nd Half
Distance13.11 mi
Time1:36:04
Pace7:20 /mi
📊Positive Split: 18.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4319:206:1319:20
6:13
-
10K
6.21 mi10:41:5838:356:1319:15
6:12
-0:01
15K
9.32 mi11:01:0857:456:1219:10
6:10
-0:02
20K
12.43 mi11:20:291:17:066:1219:21
6:14
+0:04
Half
13.11 mi11:24:441:21:216:124:15
6:14
0:00
25K
15.53 mi11:40:081:36:456:1415:24
6:21
+0:07
30K
18.64 mi12:01:051:57:426:1920:57
6:45
+0:24
20M
20.00 mi12:10:262:07:036:219:21
6:53
+0:08
21M
21.00 mi12:18:112:14:486:257:45
7:45
+0:52
35K
21.75 mi12:23:252:20:026:265:14
7:00
-0:45
23M
23.00 mi12:33:102:29:476:319:45
7:47
+0:47
24M
24.00 mi12:41:342:38:116:358:24
8:24
+0:37
40K
24.85 mi12:49:402:46:176:418:06
9:28
+1:04
25.2M
25.20 mi12:53:072:49:446:443:27
10:00
+0:32
Finish
26.22 mi13:00:482:57:256:467:41
7:32
-2:28

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

6:10 /mi

Average Pace

6:46 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:21

46% of race

Time at Steady Pace

50:56

29% of race

Time at Slower Pace

45:08

25% of race

Average Pace: 6:46 /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 mi10:22:4319:206:1319:20
6:13
#1989
10K
6.21 mi10:41:5838:356:1319:15
6:12
#1923
15K
9.32 mi11:01:0857:456:1219:10
6:10
#1831
20K
12.43 mi11:20:291:17:066:1219:21
6:14
#1776
Half
13.11 mi11:24:441:21:216:124:15
6:14
#1793
25K
15.53 mi11:40:081:36:456:1415:24
6:21
#1828
30K
18.64 mi12:01:051:57:426:1920:57
6:45
#2003
20M
20.00 mi12:10:262:07:036:219:21
6:53
#2084
21M
21.00 mi12:18:112:14:486:257:45
7:45
#2239
35K
21.75 mi12:23:252:20:026:265:14
7:00
#2309
23M
23.00 mi12:33:102:29:476:319:45
7:47
#2583
24M
24.00 mi12:41:342:38:116:358:24
8:24
#2949
40K
24.85 mi12:49:402:46:176:418:06
9:28
#3449
25.2M
25.20 mi12:53:072:49:446:443:27
10:00
#3663
Finish
26.22 mi13:00:482:57:256:467:41
7:32
#3863
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi1989189218921695(Top 6%)1609(Top 10%)1609(Top 67%)
10K6.21 mi3.10 mi1923+661831+611831+611893(Top 7%)1800(Top 11%)1800(Top 75%)
15K9.32 mi3.11 mi1831+921743+881743+881695(Top 6%)1609(Top 10%)1609(Top 67%)
20K12.43 mi3.11 mi1776+551689+541689+541693(Top 6%)1611(Top 10%)1611(Top 68%)
Half13.11 mi0.68 mi1793-171704-151704-152140(Top 8%)2044(Top 13%)2044(Top 86%)
25K15.53 mi2.42 mi1828-351740-361740-362108(Top 7%)2006(Top 12%)2006(Top 84%)
30K18.64 mi3.11 mi2003-1751907-1671907-1673105(Top 11%)2914(Top 18%)2914(Top 122%)
20M20.00 mi1.36 mi2084-811984-771984-773378(Top 12%)3124(Top 19%)3124(Top 131%)
21M21.00 mi1.00 mi2239-1552137-1532137-1535870(Top 21%)4970(Top 31%)4970(Top 208%)
35K21.75 mi0.75 mi2309-702200-632200-635260(Top 19%)4542(Top 28%)4542(Top 190%)
23M23.00 mi1.25 mi2583-2742458-2582458-2588456(Top 30%)6404(Top 40%)6404(Top 268%)
24M24.00 mi1.00 mi2949-3662789-3312789-33113817(Top 49%)9042(Top 56%)9042(Top 379%)
40K24.85 mi0.85 mi3449-5003234-4453234-44518570(Top 65%)11097(Top 69%)11097(Top 465%)
25.2M25.20 mi0.35 mi3663-2143417-1833417-18316939(Top 60%)10304(Top 64%)10304(Top 432%)
Finish26.22 mi1.02 mi3863-2003574-1573574-1579421(Top 33%)6649(Top 41%)6649(Top 279%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1695

Males

1609

M45-49

1609

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1893

Males

1800

M45-49

1800

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1695

Males

1609

M45-49

1609

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1693

Males

1611

M45-49

1611

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2140

Males

2044

M45-49

2044

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

2108

Males

2006

M45-49

2006

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

3105

Males

2914

M45-49

2914

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3378

Males

3124

M45-49

3124

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5870

Males

4970

M45-49

4970

21M→35K

21.0 - 21.8 mi

Top 19%
×7stories
+17ft-86ft

Overall

5260

Males

4542

M45-49

4542

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

8456

Males

6404

M45-49

6404

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

13817

Males

9042

M45-49

9042

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18570

Males

11097

M45-49

11097

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

16939

Males

10304

M45-49

10304

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

9421

Males

6649

M45-49

6649

Passing Analysis

Category:
Athletes Passed
503
Passed By
2377
Net Change
-1874
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1989
5K → 10K14882+66#1989#1923
10K → 15K10917+92#1923#1831
15K → 20K8631+55#1831#1776
20K → Half320-17#1776#1793
Half → 25K3974-35#1793#1828
25K → 30K38213-175#1828#2003
30K → 20M1899-81#2003#2084
20M → 21M15170-155#2084#2239
21M → 35K1080-70#2239#2309
35K → 23M8282-274#2309#2583
23M → 24M4370-366#2583#2949
24M → 40K4504-500#2949#3449
40K → 25.2M3217-214#3449#3663
25.2M → Finish18218-200#3663#3863
TOTALS5032377-1874
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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