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BOSTON MARATHON 2025

Shane Kronstedt

Bib: 26977•M

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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:35
Rank: #24307
Start → 5K
29:35 | 9:31/mi
10K· 6.21 mi
58:05
Rank: #23718 (+589)
5K → 10K
28:30 | 9:10/mi
15K· 9.32 mi
1:26:19
Rank: #23313 (+405)
10K → 15K
28:14 | 9:05/mi
20K· 12.43 mi
1:55:08
Rank: #23031 (+282)
15K → 20K
28:49 | 9:17/mi
Half· 13.11 mi
2:01:17
Rank: #22965 (+66)
20K → Half
6:09 | 9:01/mi
25K· 15.53 mi
2:23:51
Rank: #22650 (+315)
Half → 25K
22:34 | 9:18/mi
30K· 18.64 mi
2:54:29
Rank: #22363 (+287)
25K → 30K
30:38 | 9:52/mi
20M
3:08:46
Rank: #22370 (-7)
30K → 20M
14:17 | 10:31/mi
21M
3:19:48
Rank: #22300 (+70)
20M → 21M
11:02 | 11:02/mi
35K· 21.75 mi
3:27:39
Rank: #22329 (-29)
21M → 35K
7:51 | 10:30/mi
23M
3:42:05
Rank: #22469 (-140)
35K → 23M
14:26 | 11:32/mi
24M
3:53:44
Rank: #22601 (-132)
23M → 24M
11:39 | 11:39/mi
40K· 24.85 mi
4:04:27
Rank: #22780 (-179)
24M → 40K
10:43 | 12:32/mi
25.2M
4:09:06
Rank: #22859 (-79)
40K → 25.2M
4:39 | 13:29/mi
Finish· 26.22 mi
4:19:34
Rank: #22911 (-52)
25.2M → Finish
10:28 | 10:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:17
Pace9:15 /mi
2nd Half
Distance13.11 mi
Time2:18:17
Pace10:33 /mi
📊Positive Split: 14.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:1229:359:3129:35
9:31
-
10K
6.21 mi12:14:4258:059:2128:30
9:10
-0:21
15K
9.32 mi12:42:561:26:199:1628:14
9:05
-0:05
20K
12.43 mi13:11:451:55:089:1628:49
9:17
+0:12
Half
13.11 mi13:17:542:01:179:156:09
9:01
-0:16
25K
15.53 mi13:40:282:23:519:1622:34
9:18
+0:17
30K
18.64 mi14:11:062:54:299:2230:38
9:52
+0:34
20M
20.00 mi14:25:233:08:469:2614:17
10:31
+0:39
21M
21.00 mi14:36:253:19:489:3111:02
11:02
+0:31
35K
21.75 mi14:44:163:27:399:337:51
10:30
-0:32
23M
23.00 mi14:58:423:42:059:3914:26
11:32
+1:02
24M
24.00 mi15:10:213:53:449:4411:39
11:39
+0:07
40K
24.85 mi15:21:044:04:279:5010:43
12:32
+0:53
25.2M
25.20 mi15:25:434:09:069:534:39
13:29
+0:57
Finish
26.22 mi15:36:114:19:349:5410:28
10:16
-3:13

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

9:01 /mi

Average Pace

9:54 /mi

Slowest Pace

13:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:51

55% of race

Time at Steady Pace

1:03:14

24% of race

Time at Slower Pace

52:29

20% of race

Average Pace: 9:54 /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 mi11:46:1229:359:3129:35
9:31
#24307
10K
6.21 mi12:14:4258:059:2128:30
9:10
#23718
15K
9.32 mi12:42:561:26:199:1628:14
9:05
#23313
20K
12.43 mi13:11:451:55:089:1628:49
9:17
#23031
Half
13.11 mi13:17:542:01:179:156:09
9:01
#22965
25K
15.53 mi13:40:282:23:519:1622:34
9:18
#22650
30K
18.64 mi14:11:062:54:299:2230:38
9:52
#22363
20M
20.00 mi14:25:233:08:469:2614:17
10:31
#22370
21M
21.00 mi14:36:253:19:489:3111:02
11:02
#22300
35K
21.75 mi14:44:163:27:399:337:51
10:30
#22329
23M
23.00 mi14:58:423:42:059:3914:26
11:32
#22469
24M
24.00 mi15:10:213:53:449:4411:39
11:39
#22601
40K
24.85 mi15:21:044:04:279:5010:43
12:32
#22780
25.2M
25.20 mi15:25:434:09:069:534:39
13:29
#22859
Finish
26.22 mi15:36:114:19:349:5410:28
10:16
#22911
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24307143901439022407(Top 79%)13567(Top 84%)13567(Top 240%)
10K6.21 mi3.10 mi23718+58914118+27214118+27223087(Top 81%)13845(Top 86%)13845(Top 245%)
15K9.32 mi3.11 mi23313+40513951+16713951+16722407(Top 79%)13567(Top 84%)13567(Top 240%)
20K12.43 mi3.11 mi23031+28213821+13013821+13022200(Top 78%)13444(Top 83%)13444(Top 238%)
Half13.11 mi0.68 mi22965+6613799+2213799+2221875(Top 77%)13299(Top 83%)13299(Top 236%)
25K15.53 mi2.42 mi22650+31513639+16013639+16021213(Top 75%)12950(Top 80%)12950(Top 230%)
30K18.64 mi3.11 mi22363+28713473+16613473+16621188(Top 75%)12800(Top 79%)12800(Top 227%)
20M20.00 mi1.36 mi22370-713451+2213451+2222446(Top 79%)13258(Top 82%)13258(Top 235%)
21M21.00 mi1.00 mi22300+7013406+4513406+4521487(Top 76%)12734(Top 79%)12734(Top 226%)
35K21.75 mi0.75 mi22329-2913404+213404+223143(Top 81%)13459(Top 84%)13459(Top 239%)
23M23.00 mi1.25 mi22469-14013437-3313437-3324307(Top 86%)13997(Top 87%)13997(Top 248%)
24M24.00 mi1.00 mi22601-13213467-3013467-3025151(Top 89%)14376(Top 89%)14376(Top 255%)
40K24.85 mi0.85 mi22780-17913535-6813535-6825697(Top 90%)14635(Top 91%)14635(Top 259%)
25.2M25.20 mi0.35 mi22859-7913563-2813563-2825644(Top 90%)14558(Top 90%)14558(Top 258%)
Finish26.22 mi1.02 mi22911-5213578-1513578-1523720(Top 84%)13625(Top 85%)13625(Top 241%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

22407

Males

13567

M18-39

13567

5K→10K

3.1 - 6.2 mi

Top 81%
×5stories
+79ft-138ft

Overall

23087

Males

13845

M18-39

13845

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

22407

Males

13567

M18-39

13567

15K→20K

9.3 - 12.4 mi

Top 78%
×5stories
+106ft-86ft

Overall

22200

Males

13444

M18-39

13444

20K→Half

12.4 - 13.1 mi

Top 77%
×2stories
+19ft-37ft

Overall

21875

Males

13299

M18-39

13299

Half→25K

13.1 - 15.5 mi

Top 75%
×4stories
+66ft-88ft

Overall

21213

Males

12950

M18-39

12950

25K→30K

15.5 - 18.6 mi

Top 75%
×9stories
+181ft-148ft

Overall

21188

Males

12800

M18-39

12800

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

22446

Males

13258

M18-39

13258

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

21487

Males

12734

M18-39

12734

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

23143

Males

13459

M18-39

13459

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

24307

Males

13997

M18-39

13997

23M→24M

23.0 - 24.0 mi

Top 89%
×6stories
+12ft-82ft

Overall

25151

Males

14376

M18-39

14376

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25697

Males

14635

M18-39

14635

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25644

Males

14558

M18-39

14558

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2stories
+22ft-21ft

Overall

23720

Males

13625

M18-39

13625

Passing Analysis

Category:
Athletes Passed
2444
Passed By
1048
Net Change
+1396
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24307
5K → 10K64455+589#24307#23718
10K → 15K43328+405#23718#23313
15K → 20K31533+282#23313#23031
20K → Half704+66#23031#22965
Half → 25K33520+315#22965#22650
25K → 30K33851+287#22650#22363
30K → 20M7279-7#22363#22370
20M → 21M10939+70#22370#22300
21M → 35K3261-29#22300#22329
35K → 23M37177-140#22329#22469
23M → 24M27159-132#22469#22601
24M → 40K7186-179#22601#22780
40K → 25.2M483-79#22780#22859
25.2M → Finish2173-52#22859#22911
TOTALS24441048+1396
📊

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