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BOSTON MARATHON 2025

Jonathan Thomsen

Bib: 30140•M

0:00
0:00
/ mi
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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
26:49
Rank: #20633
Start → 5K
26:49 | 8:38/mi
10K· 6.21 mi
52:13
Rank: #19255 (+1378)
5K → 10K
25:24 | 8:11/mi
15K· 9.32 mi
1:17:20
Rank: #18382 (+873)
10K → 15K
25:07 | 8:05/mi
20K· 12.43 mi
1:42:51
Rank: #17847 (+535)
15K → 20K
25:31 | 8:13/mi
Half· 13.11 mi
1:48:25
Rank: #17805 (+42)
20K → Half
5:34 | 8:10/mi
25K· 15.53 mi
2:08:53
Rank: #17578 (+227)
Half → 25K
20:28 | 8:26/mi
30K· 18.64 mi
2:37:16
Rank: #17706 (-128)
25K → 30K
28:23 | 9:08/mi
20M
2:50:08
Rank: #17824 (-118)
30K → 20M
12:52 | 9:28/mi
21M
3:00:20
Rank: #17937 (-113)
20M → 21M
10:12 | 10:12/mi
35K· 21.75 mi
3:06:53
Rank: #17876 (+61)
21M → 35K
6:33 | 8:45/mi
23M
3:19:10
Rank: #18031 (-155)
35K → 23M
12:17 | 9:49/mi
24M
3:28:18
Rank: #18018 (+13)
23M → 24M
9:08 | 9:08/mi
40K· 24.85 mi
3:37:14
Rank: #18250 (-232)
24M → 40K
8:56 | 10:27/mi
25.2M
3:41:02
Rank: #18323 (-73)
40K → 25.2M
3:48 | 11:01/mi
Finish· 26.22 mi
3:49:52
Rank: #18293 (+30)
25.2M → Finish
8:50 | 8:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:25
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time2:01:27
Pace9:16 /mi
📊Positive Split: 12.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4726:498:3826:49
8:38
-
10K
6.21 mi12:13:1152:138:2425:24
8:11
-0:27
15K
9.32 mi12:38:181:17:208:1825:07
8:05
-0:06
20K
12.43 mi13:03:491:42:518:1725:31
8:13
+0:08
Half
13.11 mi13:09:231:48:258:165:34
8:10
-0:03
25K
15.53 mi13:29:512:08:538:1820:28
8:26
+0:16
30K
18.64 mi13:58:142:37:168:2628:23
9:08
+0:42
20M
20.00 mi14:11:062:50:088:3012:52
9:28
+0:20
21M
21.00 mi14:21:183:00:208:3510:12
10:12
+0:44
35K
21.75 mi14:27:513:06:538:366:33
8:45
-1:27
23M
23.00 mi14:40:083:19:108:4012:17
9:49
+1:04
24M
24.00 mi14:49:163:28:188:419:08
9:08
-0:41
40K
24.85 mi14:58:123:37:148:448:56
10:27
+1:19
25.2M
25.20 mi15:02:003:41:028:463:48
11:01
+0:34
Finish
26.22 mi15:10:503:49:528:468:50
8:40
-2:21

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

8:05 /mi

Average Pace

8:46 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:36

35% of race

Time at Steady Pace

1:40:11

44% of race

Time at Slower Pace

48:05

21% of race

Average Pace: 8:46 /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 mi11:47:4726:498:3826:49
8:38
#20633
10K
6.21 mi12:13:1152:138:2425:24
8:11
#19255
15K
9.32 mi12:38:181:17:208:1825:07
8:05
#18382
20K
12.43 mi13:03:491:42:518:1725:31
8:13
#17847
Half
13.11 mi13:09:231:48:258:165:34
8:10
#17805
25K
15.53 mi13:29:512:08:538:1820:28
8:26
#17578
30K
18.64 mi13:58:142:37:168:2628:23
9:08
#17706
20M
20.00 mi14:11:062:50:088:3012:52
9:28
#17824
21M
21.00 mi14:21:183:00:208:3510:12
10:12
#17937
35K
21.75 mi14:27:513:06:538:366:33
8:45
#17876
23M
23.00 mi14:40:083:19:108:4012:17
9:49
#18031
24M
24.00 mi14:49:163:28:188:419:08
9:08
#18018
40K
24.85 mi14:58:123:37:148:448:56
10:27
#18250
25.2M
25.20 mi15:02:003:41:028:463:48
11:01
#18323
Finish
26.22 mi15:10:503:49:528:468:50
8:40
#18293
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20633126981269816633(Top 59%)11066(Top 69%)11066(Top 196%)
10K6.21 mi3.10 mi19255+137812157+54112157+54117714(Top 62%)11537(Top 72%)11537(Top 204%)
15K9.32 mi3.11 mi18382+87311773+38411773+38416633(Top 59%)11066(Top 69%)11066(Top 196%)
20K12.43 mi3.11 mi17847+53511549+22411549+22416376(Top 58%)10910(Top 68%)10910(Top 193%)
Half13.11 mi0.68 mi17805+4211518+3111518+3117001(Top 60%)11192(Top 69%)11192(Top 198%)
25K15.53 mi2.42 mi17578+22711422+9611422+9616814(Top 59%)11024(Top 68%)11024(Top 195%)
30K18.64 mi3.11 mi17706-12811421+111421+118321(Top 65%)11519(Top 72%)11519(Top 204%)
20M20.00 mi1.36 mi17824-11811445-2411445-2419021(Top 67%)11701(Top 73%)11701(Top 207%)
21M21.00 mi1.00 mi17937-11311489-4411489-4419006(Top 67%)11617(Top 72%)11617(Top 206%)
35K21.75 mi0.75 mi17876+6111451+3811451+3817003(Top 60%)10618(Top 66%)10618(Top 188%)
23M23.00 mi1.25 mi18031-15511472-2111472-2119814(Top 70%)11814(Top 73%)11814(Top 209%)
24M24.00 mi1.00 mi18018+1311441+3111441+3118026(Top 63%)10937(Top 68%)10937(Top 194%)
40K24.85 mi0.85 mi18250-23211516-7511516-7521755(Top 77%)12630(Top 78%)12630(Top 224%)
25.2M25.20 mi0.35 mi18323-7311530-1411530-1420655(Top 73%)12102(Top 75%)12102(Top 214%)
Finish26.22 mi1.02 mi18293+3011503+2711503+2717260(Top 61%)10528(Top 65%)10528(Top 187%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

16633

Males

11066

M18-39

11066

5K→10K

3.1 - 6.2 mi

Top 62%
×5stories
+79ft-138ft

Overall

17714

Males

11537

M18-39

11537

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

16633

Males

11066

M18-39

11066

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

16376

Males

10910

M18-39

10910

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

17001

Males

11192

M18-39

11192

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

16814

Males

11024

M18-39

11024

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

18321

Males

11519

M18-39

11519

30K→20M

18.6 - 20.0 mi

Top 67%
×5stories
+64ft-50ft

Overall

19021

Males

11701

M18-39

11701

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

19006

Males

11617

M18-39

11617

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

17003

Males

10618

M18-39

10618

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

19814

Males

11814

M18-39

11814

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

18026

Males

10937

M18-39

10937

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21755

Males

12630

M18-39

12630

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

20655

Males

12102

M18-39

12102

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

17260

Males

10528

M18-39

10528

Passing Analysis

Category:
Athletes Passed
3823
Passed By
1483
Net Change
+2340
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20633
5K → 10K139113+1378#20633#19255
10K → 15K88512+873#19255#18382
15K → 20K55015+535#18382#17847
20K → Half5715+42#17847#17805
Half → 25K27346+227#17805#17578
25K → 30K178306-128#17578#17706
30K → 20M86204-118#17706#17824
20M → 21M65178-113#17824#17937
21M → 35K9029+61#17937#17876
35K → 23M64219-155#17876#18031
23M → 24M7461+13#18031#18018
24M → 40K27259-232#18018#18250
40K → 25.2M1184-73#18250#18323
25.2M → Finish7242+30#18323#18293
TOTALS38231483+2340
📊

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