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BOSTON MARATHON 2025

Lars Hellerslien

Bib: 28636•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:12
Rank: #24891
Start → 5K
30:12 | 9:43/mi
10K· 6.21 mi
58:51
Rank: #24098 (+793)
5K → 10K
28:39 | 9:13/mi
15K· 9.32 mi
1:28:03
Rank: #23891 (+207)
10K → 15K
29:12 | 9:24/mi
20K· 12.43 mi
1:57:10
Rank: #23566 (+325)
15K → 20K
29:07 | 9:22/mi
Half· 13.11 mi
2:03:29
Rank: #23516 (+50)
20K → Half
6:19 | 9:16/mi
25K· 15.53 mi
2:26:23
Rank: #23182 (+334)
Half → 25K
22:54 | 9:27/mi
30K· 18.64 mi
2:57:28
Rank: #22854 (+328)
25K → 30K
31:05 | 10:00/mi
20M
3:11:20
Rank: #22772 (+82)
30K → 20M
13:52 | 10:12/mi
21M
3:22:09
Rank: #22645 (+127)
20M → 21M
10:49 | 10:49/mi
35K· 21.75 mi
3:29:31
Rank: #22579 (+66)
21M → 35K
7:22 | 9:51/mi
23M
3:42:18
Rank: #22496 (+83)
35K → 23M
12:47 | 10:13/mi
24M
3:52:22
Rank: #22432 (+64)
23M → 24M
10:04 | 10:04/mi
40K· 24.85 mi
4:01:01
Rank: #22363 (+69)
24M → 40K
8:39 | 10:07/mi
25.2M
4:04:47
Rank: #22331 (+32)
40K → 25.2M
3:46 | 10:55/mi
Finish· 26.22 mi
4:14:30
Rank: #22289 (+42)
25.2M → Finish
9:43 | 9:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:29
Pace9:25 /mi
2nd Half
Distance13.11 mi
Time2:11:01
Pace10:00 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:0530:129:4330:12
9:43
-
10K
6.21 mi12:16:4458:519:2828:39
9:13
-0:30
15K
9.32 mi12:45:561:28:039:2729:12
9:24
+0:11
20K
12.43 mi13:15:031:57:109:2629:07
9:22
-0:02
Half
13.11 mi13:21:222:03:299:256:19
9:16
-0:06
25K
15.53 mi13:44:162:26:239:2522:54
9:27
+0:11
30K
18.64 mi14:15:212:57:289:3131:05
10:00
+0:33
20M
20.00 mi14:29:133:11:209:3413:52
10:12
+0:12
21M
21.00 mi14:40:023:22:099:3810:49
10:49
+0:37
35K
21.75 mi14:47:243:29:319:387:22
9:51
-0:58
23M
23.00 mi15:00:113:42:189:4012:47
10:13
+0:22
24M
24.00 mi15:10:153:52:229:4110:04
10:04
-0:09
40K
24.85 mi15:18:544:01:019:428:39
10:07
+0:03
25.2M
25.20 mi15:22:404:04:479:433:46
10:55
+0:48
Finish
26.22 mi15:32:234:14:309:439:43
9:32
-1:23

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

9:13 /mi

Average Pace

9:43 /mi

Slowest Pace

10:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:33:16

84% of race

Time at Steady Pace

37:28

15% of race

Time at Slower Pace

3:46

1% of race

Average Pace: 9:42 /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 mi11:48:0530:129:4330:12
9:43
#24891
10K
6.21 mi12:16:4458:519:2828:39
9:13
#24098
15K
9.32 mi12:45:561:28:039:2729:12
9:24
#23891
20K
12.43 mi13:15:031:57:109:2629:07
9:22
#23566
Half
13.11 mi13:21:222:03:299:256:19
9:16
#23516
25K
15.53 mi13:44:162:26:239:2522:54
9:27
#23182
30K
18.64 mi14:15:212:57:289:3131:05
10:00
#22854
20M
20.00 mi14:29:133:11:209:3413:52
10:12
#22772
21M
21.00 mi14:40:023:22:099:3810:49
10:49
#22645
35K
21.75 mi14:47:243:29:319:387:22
9:51
#22579
23M
23.00 mi15:00:113:42:189:4012:47
10:13
#22496
24M
24.00 mi15:10:153:52:229:4110:04
10:04
#22432
40K
24.85 mi15:18:544:01:019:428:39
10:07
#22363
25.2M
25.20 mi15:22:404:04:479:433:46
10:55
#22331
Finish
26.22 mi15:32:234:14:309:439:43
9:32
#22289
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi24891146721467223469(Top 83%)14046(Top 87%)14046(Top 589%)
10K6.21 mi3.10 mi24098+79314299+37314299+37323273(Top 82%)13929(Top 86%)13929(Top 584%)
15K9.32 mi3.11 mi23891+20714212+8714212+8723469(Top 83%)14046(Top 87%)14046(Top 589%)
20K12.43 mi3.11 mi23566+32514062+15014062+15022481(Top 79%)13569(Top 84%)13569(Top 569%)
Half13.11 mi0.68 mi23516+5014044+1814044+1822791(Top 80%)13695(Top 85%)13695(Top 574%)
25K15.53 mi2.42 mi23182+33413887+15713887+15721681(Top 76%)13156(Top 82%)13156(Top 551%)
30K18.64 mi3.11 mi22854+32813692+19513692+19521610(Top 76%)12992(Top 81%)12992(Top 545%)
20M20.00 mi1.36 mi22772+8213623+6913623+6921587(Top 76%)12856(Top 80%)12856(Top 539%)
21M21.00 mi1.00 mi22645+12713557+6613557+6620889(Top 74%)12443(Top 77%)12443(Top 522%)
35K21.75 mi0.75 mi22579+6613512+4513512+4521456(Top 76%)12652(Top 79%)12652(Top 530%)
23M23.00 mi1.25 mi22496+8313451+6113451+6121143(Top 74%)12465(Top 77%)12465(Top 522%)
24M24.00 mi1.00 mi22432+6413398+5313398+5321534(Top 76%)12608(Top 78%)12608(Top 528%)
40K24.85 mi0.85 mi22363+6913341+5713341+5720831(Top 73%)12207(Top 76%)12207(Top 512%)
25.2M25.20 mi0.35 mi22331+3213325+1613325+1620380(Top 72%)11980(Top 74%)11980(Top 502%)
Finish26.22 mi1.02 mi22289+4213289+3613289+3621292(Top 75%)12433(Top 77%)12433(Top 521%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23469

Males

14046

M45-49

14046

5K→10K

3.1 - 6.2 mi

Top 82%
×5stories
+79ft-138ft

Overall

23273

Males

13929

M45-49

13929

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23469

Males

14046

M45-49

14046

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

22481

Males

13569

M45-49

13569

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

22791

Males

13695

M45-49

13695

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

21681

Males

13156

M45-49

13156

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

21610

Males

12992

M45-49

12992

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

21587

Males

12856

M45-49

12856

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

20889

Males

12443

M45-49

12443

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

21456

Males

12652

M45-49

12652

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

21143

Males

12465

M45-49

12465

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

21534

Males

12608

M45-49

12608

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20831

Males

12207

M45-49

12207

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20380

Males

11980

M45-49

11980

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

21292

Males

12433

M45-49

12433

Passing Analysis

Category:
Athletes Passed
2896
Passed By
294
Net Change
+2602
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24891
5K → 10K80613+793#24891#24098
10K → 15K26962+207#24098#23891
15K → 20K34419+325#23891#23566
20K → Half544+50#23566#23516
Half → 25K34410+334#23516#23182
25K → 30K35931+328#23182#22854
30K → 20M12442+82#22854#22772
20M → 21M14114+127#22772#22645
21M → 35K8216+66#22645#22579
35K → 23M11229+83#22579#22496
23M → 24M8622+64#22496#22432
24M → 40K789+69#22432#22363
40K → 25.2M353+32#22363#22331
25.2M → Finish6220+42#22331#22289
TOTALS2896294+2602
📊

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