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BOSTON MARATHON 2025

Jon Day

Bib: 1494•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Masters (Masters Men)
#0 / 10463
Top 5%
Division (M40-44)
#0 / 2247
Top 13%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:09
Rank: #3741
Start → 5K
6:29/mi
20:09 split
10K· 6.21 mi
39:18
Rank: #2596 (+1145)
5K → 10K
6:10/mi
19:09 split
15K· 9.32 mi
58:47
Rank: #2438 (+158)
10K → 15K
6:16/mi
19:29 split
20K· 12.43 mi
1:18:45
Rank: #2474 (-36)
15K → 20K
6:26/mi
19:58 split
Half· 13.11 mi
1:23:04
Rank: #2482 (-8)
20K → Half
6:20/mi
4:19 split
25K· 15.53 mi
1:38:54
Rank: #2555 (-73)
Half → 25K
6:32/mi
15:50 split
30K· 18.64 mi
1:59:46
Rank: #2582 (-27)
25K → 30K
6:43/mi
20:52 split
20M
2:08:57
Rank: #2561 (+21)
30K → 20M
6:45/mi
9:11 split
21M
2:16:12
Rank: #2588 (-27)
20M → 21M
7:15/mi
7:15 split
35K· 21.75 mi
2:21:14
Rank: #2601 (-13)
21M → 35K
6:44/mi
5:02 split
23M
2:29:53
Rank: #2613 (-12)
35K → 23M
6:55/mi
8:39 split
24M
2:36:41
Rank: #2613
23M → 24M
6:48/mi
6:48 split
40K· 24.85 mi
2:42:33
Rank: #2601 (+12)
24M → 40K
6:52/mi
5:52 split
25.2M
2:45:07
Rank: #2599 (+2)
40K → 25.2M
7:27/mi
2:34 split
Finish· 26.22 mi
2:51:50
Rank: #2598 (+1)
25.2M → Finish
6:35/mi
6:43 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:04
Pace6:20 /mi
2nd Half
Distance13.11 mi
Time1:28:46
Pace6:46 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:5320:096:2920:09
6:29
-
10K
6.21 mi10:40:0239:186:1919:09
6:10
-0:19
15K
9.32 mi10:59:3158:476:1819:29
6:16
+0:06
20K
12.43 mi11:19:291:18:456:2019:58
6:26
+0:10
Half
13.11 mi11:23:481:23:046:204:19
6:20
-0:06
25K
15.53 mi11:39:381:38:546:2215:50
6:32
+0:12
30K
18.64 mi12:00:301:59:466:2520:52
6:43
+0:11
20M
20.00 mi12:09:412:08:576:279:11
6:45
+0:02
21M
21.00 mi12:16:562:16:126:297:15
7:15
+0:30
35K
21.75 mi12:21:582:21:146:305:02
6:44
-0:31
23M
23.00 mi12:30:372:29:536:318:39
6:55
+0:11
24M
24.00 mi12:37:252:36:416:326:48
6:48
-0:07
40K
24.85 mi12:43:172:42:336:325:52
6:52
+0:04
25.2M
25.20 mi12:45:512:45:076:332:34
7:27
+0:35
Finish
26.22 mi12:52:342:51:506:346:43
6:35
-0:52

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

6:34 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:54

58% of race

Time at Steady Pace

54:28

32% of race

Time at Slower Pace

18:28

11% of race

Average Pace: 6:33 /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 mi10:20:5320:096:2920:09
6:29
#3741
10K
6.21 mi10:40:0239:186:1919:09
6:10
#2596
15K
9.32 mi10:59:3158:476:1819:29
6:16
#2438
20K
12.43 mi11:19:291:18:456:2019:58
6:26
#2474
Half
13.11 mi11:23:481:23:046:204:19
6:20
#2482
25K
15.53 mi11:39:381:38:546:2215:50
6:32
#2555
30K
18.64 mi12:00:301:59:466:2520:52
6:43
#2582
20M
20.00 mi12:09:412:08:576:279:11
6:45
#2561
21M
21.00 mi12:16:562:16:126:297:15
7:15
#2588
35K
21.75 mi12:21:582:21:146:305:02
6:44
#2601
23M
23.00 mi12:30:372:29:536:318:39
6:55
#2613
24M
24.00 mi12:37:252:36:416:326:48
6:48
#2613
40K
24.85 mi12:43:172:42:336:325:52
6:52
#2601
25.2M
25.20 mi12:45:512:45:076:332:34
7:27
#2599
Finish
26.22 mi12:52:342:51:506:346:43
6:35
#2598
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3741354435442219(Top 8%)2115(Top 13%)2115(Top 94%)
10K6.21 mi3.10 mi2596+11452474+10702474+10701753(Top 6%)1669(Top 10%)1669(Top 74%)
15K9.32 mi3.11 mi2438+1582328+1462328+1462219(Top 8%)2115(Top 13%)2115(Top 94%)
20K12.43 mi3.11 mi2474-362361-332361-332684(Top 9%)2554(Top 16%)2554(Top 114%)
Half13.11 mi0.68 mi2482-82369-82369-82702(Top 10%)2585(Top 16%)2585(Top 115%)
25K15.53 mi2.42 mi2555-732439-702439-703056(Top 11%)2901(Top 18%)2901(Top 129%)
30K18.64 mi3.11 mi2582-272466-272466-272969(Top 10%)2796(Top 17%)2796(Top 124%)
20M20.00 mi1.36 mi2561+212445+212445+212734(Top 10%)2563(Top 16%)2563(Top 114%)
21M21.00 mi1.00 mi2588-272467-222467-223383(Top 12%)3105(Top 19%)3105(Top 138%)
35K21.75 mi0.75 mi2601-132477-102477-103687(Top 13%)3334(Top 21%)3334(Top 148%)
23M23.00 mi1.25 mi2613-122483-62483-63256(Top 11%)2967(Top 18%)2967(Top 132%)
24M24.00 mi1.00 mi26132480+32480+33518(Top 12%)3153(Top 20%)3153(Top 140%)
40K24.85 mi0.85 mi2601+122468+122468+123162(Top 11%)2835(Top 18%)2835(Top 126%)
25.2M25.20 mi0.35 mi2599+22463+52463+53179(Top 11%)2820(Top 18%)2820(Top 126%)
Finish26.22 mi1.02 mi2598+12458+52458+53295(Top 12%)2903(Top 18%)2903(Top 129%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2219

Males

2115

M40-44

2115

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1753

Males

1669

M40-44

1669

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2219

Males

2115

M40-44

2115

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2684

Males

2554

M40-44

2554

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2702

Males

2585

M40-44

2585

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3056

Males

2901

M40-44

2901

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2969

Males

2796

M40-44

2796

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2734

Males

2563

M40-44

2563

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3383

Males

3105

M40-44

3105

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3687

Males

3334

M40-44

3334

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3256

Males

2967

M40-44

2967

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3518

Males

3153

M40-44

3153

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3162

Males

2835

M40-44

2835

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3179

Males

2820

M40-44

2820

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3295

Males

2903

M40-44

2903

Passing Analysis

Category:
Athletes Passed
1827
Passed By
684
Net Change
+1143
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3741
5K → 10K11461+1145#3741#2596
10K → 15K18426+158#2596#2438
15K → 20K5995-36#2438#2474
20K → Half1220-8#2474#2482
Half → 25K36109-73#2482#2555
25K → 30K79106-27#2555#2582
30K → 20M6443+21#2582#2561
20M → 21M3764-27#2561#2588
21M → 35K3043-13#2588#2601
35K → 23M4860-12#2601#2613
23M → 24M42420#2613#2613
24M → 40K3826+12#2613#2601
40K → 25.2M1816+2#2601#2599
25.2M → Finish3433+1#2599#2598
TOTALS1827684+1143
📊

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