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BOSTON MARATHON 2025

Mattias Karlsson

Bib: 1917•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Male)
#0 / 16105
Top 13%
Division (M18-39)
#0 / 5642
Top 31%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:23
Rank: #838
Start → 5K
18:23 | 5:55/mi
10K· 6.21 mi
37:09
Rank: #1014 (-176)
5K → 10K
18:46 | 6:02/mi
15K· 9.32 mi
55:57
Rank: #1061 (-47)
10K → 15K
18:48 | 6:03/mi
20K· 12.43 mi
1:15:21
Rank: #1187 (-126)
15K → 20K
19:24 | 6:15/mi
Half· 13.11 mi
1:19:39
Rank: #1228 (-41)
20K → Half
4:18 | 6:18/mi
25K· 15.53 mi
1:34:57
Rank: #1322 (-94)
Half → 25K
15:18 | 6:19/mi
30K· 18.64 mi
1:55:22
Rank: #1439 (-117)
25K → 30K
20:25 | 6:34/mi
20M
2:04:31
Rank: #1491 (-52)
30K → 20M
9:09 | 6:44/mi
21M
2:11:40
Rank: #1544 (-53)
20M → 21M
7:09 | 7:09/mi
35K· 21.75 mi
2:16:37
Rank: #1571 (-27)
21M → 35K
4:57 | 6:37/mi
23M
2:25:13
Rank: #1605 (-34)
35K → 23M
8:36 | 6:52/mi
24M
2:32:44
Rank: #1811 (-206)
23M → 24M
7:31 | 7:31/mi
40K· 24.85 mi
2:39:27
Rank: #1981 (-170)
24M → 40K
6:43 | 7:51/mi
25.2M
2:42:30
Rank: #2085 (-104)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
2:49:49
Rank: #2234 (-149)
25.2M → Finish
7:19 | 7:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:39
Pace6:05 /mi
2nd Half
Distance13.11 mi
Time1:30:10
Pace6:53 /mi
📊Positive Split: 13.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:4718:235:5518:23
5:55
-
10K
6.21 mi10:37:3337:095:5918:46
6:02
+0:07
15K
9.32 mi10:56:2155:576:0018:48
6:03
+0:01
20K
12.43 mi11:15:451:15:216:0419:24
6:15
+0:12
Half
13.11 mi11:20:031:19:396:054:18
6:18
+0:03
25K
15.53 mi11:35:211:34:576:0715:18
6:19
+0:01
30K
18.64 mi11:55:461:55:226:1120:25
6:34
+0:15
20M
20.00 mi12:04:552:04:316:149:09
6:44
+0:10
21M
21.00 mi12:12:042:11:406:167:09
7:09
+0:25
35K
21.75 mi12:17:012:16:376:174:57
6:37
-0:32
23M
23.00 mi12:25:372:25:136:198:36
6:52
+0:15
24M
24.00 mi12:33:082:32:446:227:31
7:31
+0:39
40K
24.85 mi12:39:512:39:276:256:43
7:51
+0:20
25.2M
25.20 mi12:42:542:42:306:273:03
8:51
+1:00
Finish
26.22 mi12:50:132:49:496:297:19
7:11
-1:40

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

5:55 /mi

Average Pace

6:29 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

55:57

33% of race

Time at Steady Pace

1:22:07

48% of race

Time at Slower Pace

31:45

19% of race

Average Pace: 6:29 /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 mi10:18:4718:235:5518:23
5:55
#838
10K
6.21 mi10:37:3337:095:5918:46
6:02
#1014
15K
9.32 mi10:56:2155:576:0018:48
6:03
#1061
20K
12.43 mi11:15:451:15:216:0419:24
6:15
#1187
Half
13.11 mi11:20:031:19:396:054:18
6:18
#1228
25K
15.53 mi11:35:211:34:576:0715:18
6:19
#1322
30K
18.64 mi11:55:461:55:226:1120:25
6:34
#1439
20M
20.00 mi12:04:552:04:316:149:09
6:44
#1491
21M
21.00 mi12:12:042:11:406:167:09
7:09
#1544
35K
21.75 mi12:17:012:16:376:174:57
6:37
#1571
23M
23.00 mi12:25:372:25:136:198:36
6:52
#1605
24M
24.00 mi12:33:082:32:446:227:31
7:31
#1811
40K
24.85 mi12:39:512:39:276:256:43
7:51
#1981
25.2M
25.20 mi12:42:542:42:306:273:03
8:51
#2085
Finish
26.22 mi12:50:132:49:496:297:19
7:11
#2234
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi8387847841198(Top 4%)1136(Top 7%)1136(Top 20%)
10K6.21 mi3.10 mi1014-176955-171955-1711236(Top 4%)1172(Top 7%)1172(Top 21%)
15K9.32 mi3.11 mi1061-471001-461001-461198(Top 4%)1136(Top 7%)1136(Top 20%)
20K12.43 mi3.11 mi1187-1261126-1251126-1251772(Top 6%)1684(Top 10%)1684(Top 30%)
Half13.11 mi0.68 mi1228-411162-361162-362495(Top 9%)2384(Top 15%)2384(Top 42%)
25K15.53 mi2.42 mi1322-941251-891251-891908(Top 7%)1814(Top 11%)1814(Top 32%)
30K18.64 mi3.11 mi1439-1171361-1101361-1102276(Top 8%)2155(Top 13%)2155(Top 38%)
20M20.00 mi1.36 mi1491-521411-501411-502596(Top 9%)2438(Top 15%)2438(Top 43%)
21M21.00 mi1.00 mi1544-531462-511462-512870(Top 10%)2656(Top 16%)2656(Top 47%)
35K21.75 mi0.75 mi1571-271487-251487-253008(Top 11%)2763(Top 17%)2763(Top 49%)
23M23.00 mi1.25 mi1605-341519-321519-323023(Top 11%)2762(Top 17%)2762(Top 49%)
24M24.00 mi1.00 mi1811-2061715-1961715-1967753(Top 27%)5947(Top 37%)5947(Top 105%)
40K24.85 mi0.85 mi1981-1701879-1641879-1649108(Top 32%)6555(Top 41%)6555(Top 116%)
25.2M25.20 mi0.35 mi2085-1041979-1001979-10010765(Top 38%)7319(Top 45%)7319(Top 130%)
Finish26.22 mi1.02 mi2234-1492119-1402119-1406869(Top 24%)5235(Top 33%)5235(Top 93%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1198

Males

1136

M18-39

1136

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1236

Males

1172

M18-39

1172

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1198

Males

1136

M18-39

1136

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1772

Males

1684

M18-39

1684

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2495

Males

2384

M18-39

2384

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1908

Males

1814

M18-39

1814

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2276

Males

2155

M18-39

2155

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2596

Males

2438

M18-39

2438

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2870

Males

2656

M18-39

2656

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3008

Males

2763

M18-39

2763

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3023

Males

2762

M18-39

2762

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

7753

Males

5947

M18-39

5947

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

9108

Males

6555

M18-39

6555

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10765

Males

7319

M18-39

7319

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6869

Males

5235

M18-39

5235

Passing Analysis

Category:
Athletes Passed
186
Passed By
1582
Net Change
-1396
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#838
5K → 10K9185-176#838#1014
10K → 15K1562-47#1014#1061
15K → 20K12138-126#1061#1187
20K → Half142-41#1187#1228
Half → 25K22116-94#1228#1322
25K → 30K23140-117#1322#1439
30K → 20M2072-52#1439#1491
20M → 21M1669-53#1491#1544
21M → 35K1845-27#1544#1571
35K → 23M3468-34#1571#1605
23M → 24M3209-206#1605#1811
24M → 40K7177-170#1811#1981
40K → 25.2M0104-104#1981#2085
25.2M → Finish6155-149#2085#2234
TOTALS1861582-1396
📊

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