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BOSTON MARATHON 2025

Per Filip Kron

Bib: 3773•M

IL

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 7%
Division (M18-39)
#0 / 5642
Top 17%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:03
Rank: #3464
Start → 5K
20:03 | 6:27/mi
10K· 6.21 mi
39:48
Rank: #3096 (+368)
5K → 10K
19:45 | 6:21/mi
15K· 9.32 mi
59:25
Rank: #2838 (+258)
10K → 15K
19:37 | 6:19/mi
20K· 12.43 mi
1:18:41
Rank: #2437 (+401)
15K → 20K
19:16 | 6:12/mi
Half· 13.11 mi
1:22:49
Rank: #2357 (+80)
20K → Half
4:08 | 6:03/mi
25K· 15.53 mi
1:37:29
Rank: #2067 (+290)
Half → 25K
14:40 | 6:03/mi
30K· 18.64 mi
1:56:59
Rank: #1829 (+238)
25K → 30K
19:30 | 6:17/mi
20M
2:05:36
Rank: #1734 (+95)
30K → 20M
8:37 | 6:20/mi
21M
2:12:12
Rank: #1648 (+86)
20M → 21M
6:36 | 6:36/mi
35K· 21.75 mi
2:16:39
Rank: #1580 (+68)
21M → 35K
4:27 | 5:57/mi
23M
2:24:33
Rank: #1485 (+95)
35K → 23M
7:54 | 6:19/mi
24M
2:30:22
Rank: #1365 (+120)
23M → 24M
5:49 | 5:49/mi
40K· 24.85 mi
2:35:25
Rank: #1296 (+69)
24M → 40K
5:03 | 5:54/mi
25.2M
2:37:38
Rank: #1260 (+36)
40K → 25.2M
2:13 | 6:26/mi
Finish· 26.22 mi
2:43:31
Rank: #1185 (+75)
25.2M → Finish
5:53 | 5:46/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:22:49
Pace6:19 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:20:42
Pace6:09 /mi
📊Negative Split: 2.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0620:036:2720:03
6:27
-
10K
6.21 mi10:42:5139:486:2419:45
6:21
-0:06
15K
9.32 mi11:02:2859:256:2219:37
6:19
-0:02
20K
12.43 mi11:21:441:18:416:2019:16
6:12
-0:07
Half
13.11 mi11:25:521:22:496:194:08
6:03
-0:09
25K
15.53 mi11:40:321:37:296:1714:40
6:03
0:00
30K
18.64 mi12:00:021:56:596:1719:30
6:17
+0:14
20M
20.00 mi12:08:392:05:366:178:37
6:20
+0:03
21M
21.00 mi12:15:152:12:126:186:36
6:36
+0:16
35K
21.75 mi12:19:422:16:396:174:27
5:57
-0:39
23M
23.00 mi12:27:362:24:336:177:54
6:19
+0:22
24M
24.00 mi12:33:252:30:226:165:49
5:49
-0:30
40K
24.85 mi12:38:282:35:256:155:03
5:54
+0:05
25.2M
25.20 mi12:40:412:37:386:152:13
6:26
+0:32
Finish
26.22 mi12:46:342:43:316:145:53
5:46
-0:40

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

5:46 /mi

Average Pace

6:14 /mi

Slowest Pace

6:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:54

70% of race

Time at Steady Pace

48:37

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:14 /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 mi10:23:0620:036:2720:03
6:27
#3464
10K
6.21 mi10:42:5139:486:2419:45
6:21
#3096
15K
9.32 mi11:02:2859:256:2219:37
6:19
#2838
20K
12.43 mi11:21:441:18:416:2019:16
6:12
#2437
Half
13.11 mi11:25:521:22:496:194:08
6:03
#2357
25K
15.53 mi11:40:321:37:296:1714:40
6:03
#2067
30K
18.64 mi12:00:021:56:596:1719:30
6:17
#1829
20M
20.00 mi12:08:392:05:366:178:37
6:20
#1734
21M
21.00 mi12:15:152:12:126:186:36
6:36
#1648
35K
21.75 mi12:19:422:16:396:174:27
5:57
#1580
23M
23.00 mi12:27:362:24:336:177:54
6:19
#1485
24M
24.00 mi12:33:252:30:226:165:49
5:49
#1365
40K
24.85 mi12:38:282:35:256:155:03
5:54
#1296
25.2M
25.20 mi12:40:412:37:386:152:13
6:26
#1260
Finish
26.22 mi12:46:342:43:316:145:53
5:46
#1185
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3464329132912395(Top 8%)2285(Top 14%)2285(Top 40%)
10K6.21 mi3.10 mi3096+3682944+3472944+3472760(Top 10%)2628(Top 16%)2628(Top 47%)
15K9.32 mi3.11 mi2838+2582706+2382706+2382395(Top 8%)2285(Top 14%)2285(Top 40%)
20K12.43 mi3.11 mi2437+4012325+3812325+3811584(Top 6%)1504(Top 9%)1504(Top 27%)
Half13.11 mi0.68 mi2357+802248+772248+771357(Top 5%)1289(Top 8%)1289(Top 23%)
25K15.53 mi2.42 mi2067+2901970+2781970+278929(Top 3%)875(Top 5%)875(Top 16%)
30K18.64 mi3.11 mi1829+2381740+2301740+2301137(Top 4%)1071(Top 7%)1071(Top 19%)
20M20.00 mi1.36 mi1734+951648+921648+921070(Top 4%)1009(Top 6%)1009(Top 18%)
21M21.00 mi1.00 mi1648+861562+861562+86909(Top 3%)859(Top 5%)859(Top 15%)
35K21.75 mi0.75 mi1580+681496+661496+66636(Top 2%)595(Top 4%)595(Top 11%)
23M23.00 mi1.25 mi1485+951404+921404+92904(Top 3%)851(Top 5%)851(Top 15%)
24M24.00 mi1.00 mi1365+1201286+1181286+118299(Top 1%)277(Top 2%)277(Top 5%)
40K24.85 mi0.85 mi1296+691220+661220+66299(Top 1%)276(Top 2%)276(Top 5%)
25.2M25.20 mi0.35 mi1260+361184+361184+36370(Top 1%)344(Top 2%)344(Top 6%)
Finish26.22 mi1.02 mi1185+751115+691115+69478(Top 2%)449(Top 3%)449(Top 8%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2395

Males

2285

M18-39

2285

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2760

Males

2628

M18-39

2628

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2395

Males

2285

M18-39

2285

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1584

Males

1504

M18-39

1504

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1357

Males

1289

M18-39

1289

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

929

Males

875

M18-39

875

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1137

Males

1071

M18-39

1071

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1070

Males

1009

M18-39

1009

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

909

Males

859

M18-39

859

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

636

Males

595

M18-39

595

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

904

Males

851

M18-39

851

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

299

Males

277

M18-39

277

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

299

Males

276

M18-39

276

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

370

Males

344

M18-39

344

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

478

Males

449

M18-39

449

Passing Analysis

Category:
Athletes Passed
2325
Passed By
46
Net Change
+2279
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3464
5K → 10K38820+368#3464#3096
10K → 15K26911+258#3096#2838
15K → 20K4010+401#2838#2437
20K → Half800+80#2437#2357
Half → 25K2900+290#2357#2067
25K → 30K2413+238#2067#1829
30K → 20M972+95#1829#1734
20M → 21M915+86#1734#1648
21M → 35K691+68#1648#1580
35K → 23M983+95#1580#1485
23M → 24M1211+120#1485#1365
24M → 40K690+69#1365#1296
40K → 25.2M360+36#1296#1260
25.2M → Finish750+75#1260#1185
TOTALS232546+2279
📊

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