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BOSTON MARATHON 2025

Christopher Stjernholm

Bib: 6450•M

CO

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 40%
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
20:44
Rank: #5232
Start → 5K
20:44 | 6:40/mi
10K· 6.21 mi
41:43
Rank: #5517 (-285)
5K → 10K
20:59 | 6:45/mi
15K· 9.32 mi
1:02:36
Rank: #5417 (+100)
10K → 15K
20:53 | 6:43/mi
20K· 12.43 mi
1:23:50
Rank: #5437 (-20)
15K → 20K
21:14 | 6:50/mi
Half· 13.11 mi
1:28:27
Rank: #5459 (-22)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:45:31
Rank: #5654 (-195)
Half → 25K
17:04 | 7:02/mi
30K· 18.64 mi
2:10:29
Rank: #6664 (-1010)
25K → 30K
24:58 | 8:02/mi
20M
2:22:24
Rank: #7195 (-531)
30K → 20M
11:55 | 8:46/mi
21M
2:32:10
Rank: #7721 (-526)
20M → 21M
9:46 | 9:46/mi
35K· 21.75 mi
2:39:08
Rank: #8204 (-483)
21M → 35K
6:58 | 9:19/mi
23M
2:51:24
Rank: #9090 (-886)
35K → 23M
12:16 | 9:48/mi
24M
3:01:19
Rank: #9839 (-749)
23M → 24M
9:55 | 9:55/mi
40K· 24.85 mi
3:10:04
Rank: #10456 (-617)
24M → 40K
8:45 | 10:14/mi
25.2M
3:13:54
Rank: #10684 (-228)
40K → 25.2M
3:50 | 11:07/mi
Finish· 26.22 mi
3:24:12
Rank: #11406 (-722)
25.2M → Finish
10:18 | 10:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:27
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:55:45
Pace8:50 /mi
📊Positive Split: 30.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:1020:446:4020:44
6:40
-
10K
6.21 mi10:47:0941:436:4320:59
6:45
+0:05
15K
9.32 mi11:08:021:02:366:4320:53
6:43
-0:02
20K
12.43 mi11:29:161:23:506:4521:14
6:50
+0:07
Half
13.11 mi11:33:531:28:276:454:37
6:46
-0:04
25K
15.53 mi11:50:571:45:316:4817:04
7:02
+0:16
30K
18.64 mi12:15:552:10:297:0024:58
8:02
+1:00
20M
20.00 mi12:27:502:22:247:0711:55
8:46
+0:44
21M
21.00 mi12:37:362:32:107:159:46
9:46
+1:00
35K
21.75 mi12:44:342:39:087:196:58
9:19
-0:27
23M
23.00 mi12:56:502:51:247:2712:16
9:48
+0:29
24M
24.00 mi13:06:453:01:197:339:55
9:55
+0:07
40K
24.85 mi13:15:303:10:047:398:45
10:14
+0:19
25.2M
25.20 mi13:19:203:13:547:423:50
11:07
+0:53
Finish
26.22 mi13:29:383:24:127:4810:18
10:06
-1:01

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

6:40 /mi

Average Pace

7:48 /mi

Slowest Pace

11:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:31

52% of race

Time at Steady Pace

43:51

21% of race

Time at Slower Pace

54:50

27% of race

Average Pace: 7:47 /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 mi10:26:1020:446:4020:44
6:40
#5232
10K
6.21 mi10:47:0941:436:4320:59
6:45
#5517
15K
9.32 mi11:08:021:02:366:4320:53
6:43
#5417
20K
12.43 mi11:29:161:23:506:4521:14
6:50
#5437
Half
13.11 mi11:33:531:28:276:454:37
6:46
#5459
25K
15.53 mi11:50:571:45:316:4817:04
7:02
#5654
30K
18.64 mi12:15:552:10:297:0024:58
8:02
#6664
20M
20.00 mi12:27:502:22:247:0711:55
8:46
#7195
21M
21.00 mi12:37:362:32:107:159:46
9:46
#7721
35K
21.75 mi12:44:342:39:087:196:58
9:19
#8204
23M
23.00 mi12:56:502:51:247:2712:16
9:48
#9090
24M
24.00 mi13:06:453:01:197:339:55
9:55
#9839
40K
24.85 mi13:15:303:10:047:398:45
10:14
#10456
25.2M
25.20 mi13:19:203:13:547:423:50
11:07
#10684
Finish
26.22 mi13:29:383:24:127:4810:18
10:06
#11406
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5232487448745303(Top 19%)4902(Top 30%)4902(Top 87%)
10K6.21 mi3.10 mi5517-2855101-2275101-2275905(Top 21%)5406(Top 34%)5406(Top 96%)
15K9.32 mi3.11 mi5417+1005014+875014+875303(Top 19%)4902(Top 30%)4902(Top 87%)
20K12.43 mi3.11 mi5437-205022-85022-85658(Top 20%)5161(Top 32%)5161(Top 91%)
Half13.11 mi0.68 mi5459-225039-175039-175896(Top 21%)5383(Top 33%)5383(Top 95%)
25K15.53 mi2.42 mi5654-1955190-1515190-1516581(Top 23%)5826(Top 36%)5826(Top 103%)
30K18.64 mi3.11 mi6664-10105955-7655955-76511632(Top 41%)8489(Top 53%)8489(Top 150%)
20M20.00 mi1.36 mi7195-5316319-3646319-36415452(Top 54%)10115(Top 63%)10115(Top 179%)
21M21.00 mi1.00 mi7721-5266636-3176636-31717303(Top 61%)10819(Top 67%)10819(Top 192%)
35K21.75 mi0.75 mi8204-4836918-2826918-28219587(Top 69%)11764(Top 73%)11764(Top 209%)
23M23.00 mi1.25 mi9090-8867386-4687386-46819771(Top 70%)11789(Top 73%)11789(Top 209%)
24M24.00 mi1.00 mi9839-7497756-3707756-37021094(Top 74%)12384(Top 77%)12384(Top 219%)
40K24.85 mi0.85 mi10456-6178038-2828038-28221152(Top 74%)12350(Top 77%)12350(Top 219%)
25.2M25.20 mi0.35 mi10684-2288130-928130-9220933(Top 74%)12241(Top 76%)12241(Top 217%)
Finish26.22 mi1.02 mi11406-7228420-2908420-29023217(Top 82%)13376(Top 83%)13376(Top 237%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5303

Males

4902

M18-39

4902

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5905

Males

5406

M18-39

5406

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5303

Males

4902

M18-39

4902

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5658

Males

5161

M18-39

5161

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5896

Males

5383

M18-39

5383

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6581

Males

5826

M18-39

5826

25K→30K

15.5 - 18.6 mi

Top 41%
×9stories
+181ft-148ft

Overall

11632

Males

8489

M18-39

8489

30K→20M

18.6 - 20.0 mi

Top 54%
×5stories
+64ft-50ft

Overall

15452

Males

10115

M18-39

10115

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

17303

Males

10819

M18-39

10819

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

19587

Males

11764

M18-39

11764

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

19771

Males

11789

M18-39

11789

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

21094

Males

12384

M18-39

12384

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21152

Males

12350

M18-39

12350

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

20933

Males

12241

M18-39

12241

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

23217

Males

13376

M18-39

13376

Passing Analysis

Category:
Athletes Passed
573
Passed By
6745
Net Change
-6174
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5232
5K → 10K83368-285#5232#5517
10K → 15K16969+100#5517#5417
15K → 20K119139-20#5417#5437
20K → Half2547-22#5437#5459
Half → 25K68263-195#5459#5654
25K → 30K341044-1010#5654#6664
30K → 20M18549-531#6664#7195
20M → 21M9535-526#7195#7721
21M → 35K7490-483#7721#8204
35K → 23M15901-886#8204#9090
23M → 24M6755-749#9090#9839
24M → 40K8623-617#9839#10456
40K → 25.2M8236-228#10456#10684
25.2M → Finish4726-722#10684#11406
TOTALS5736745-6174
📊

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