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BOSTON MARATHON 2025

Flemming Dalsgaard

Bib: 30223•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:24
Rank: #26609
Start → 5K
32:24 | 10:26/mi
10K· 6.21 mi
1:03:25
Rank: #25923 (+686)
5K → 10K
31:01 | 9:59/mi
15K· 9.32 mi
1:34:51
Rank: #25671 (+252)
10K → 15K
31:26 | 10:07/mi
20K· 12.43 mi
2:06:05
Rank: #25329 (+342)
15K → 20K
31:14 | 10:03/mi
Half· 13.11 mi
2:12:44
Rank: #25267 (+62)
20K → Half
6:39 | 9:45/mi
25K· 15.53 mi
2:37:20
Rank: #24977 (+290)
Half → 25K
24:36 | 10:09/mi
30K· 18.64 mi
3:09:08
Rank: #24549 (+428)
25K → 30K
31:48 | 10:14/mi
20M
3:23:18
Rank: #24406 (+143)
30K → 20M
14:10 | 10:25/mi
21M
3:34:42
Rank: #24287 (+119)
20M → 21M
11:24 | 11:24/mi
35K· 21.75 mi
3:42:56
Rank: #24279 (+8)
21M → 35K
8:14 | 11:00/mi
23M
3:56:55
Rank: #24251 (+28)
35K → 23M
13:59 | 11:10/mi
24M
4:07:12
Rank: #24173 (+78)
23M → 24M
10:17 | 10:17/mi
40K· 24.85 mi
4:16:36
Rank: #24141 (+32)
24M → 40K
9:24 | 11:00/mi
25.2M
4:20:55
Rank: #24146 (-5)
40K → 25.2M
4:19 | 12:31/mi
Finish· 26.22 mi
4:30:32
Rank: #24077 (+69)
25.2M → Finish
9:37 | 9:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:12:44
Pace10:07 /mi
2nd Half
Distance13.11 mi
Time2:17:48
Pace10:31 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:2332:2410:2632:24
10:26
-
10K
6.21 mi12:27:241:03:2510:1231:01
9:59
-0:27
15K
9.32 mi12:58:501:34:5110:1131:26
10:07
+0:08
20K
12.43 mi13:30:042:06:0510:0931:14
10:03
-0:04
Half
13.11 mi13:36:432:12:4410:076:39
9:45
-0:18
25K
15.53 mi14:01:192:37:2010:0824:36
10:09
+0:24
30K
18.64 mi14:33:073:09:0810:0931:48
10:14
+0:05
20M
20.00 mi14:47:173:23:1810:1014:10
10:25
+0:11
21M
21.00 mi14:58:413:34:4210:1311:24
11:24
+0:59
35K
21.75 mi15:06:553:42:5610:158:14
11:00
-0:24
23M
23.00 mi15:20:543:56:5510:1813:59
11:10
+0:10
24M
24.00 mi15:31:114:07:1210:1810:17
10:17
-0:53
40K
24.85 mi15:40:354:16:3610:199:24
11:00
+0:43
25.2M
25.20 mi15:44:544:20:5510:214:19
12:31
+1:31
Finish
26.22 mi15:54:314:30:3210:209:37
9:26
-3:05

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

9:26 /mi

Average Pace

10:20 /mi

Slowest Pace

12:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

16:16

6% of race

Time at Steady Pace

3:26:56

76% of race

Time at Slower Pace

47:20

17% of race

Average Pace: 10:19 /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 mi11:56:2332:2410:2632:24
10:26
#26609
10K
6.21 mi12:27:241:03:2510:1231:01
9:59
#25923
15K
9.32 mi12:58:501:34:5110:1131:26
10:07
#25671
20K
12.43 mi13:30:042:06:0510:0931:14
10:03
#25329
Half
13.11 mi13:36:432:12:4410:076:39
9:45
#25267
25K
15.53 mi14:01:192:37:2010:0824:36
10:09
#24977
30K
18.64 mi14:33:073:09:0810:0931:48
10:14
#24549
20M
20.00 mi14:47:173:23:1810:1014:10
10:25
#24406
21M
21.00 mi14:58:413:34:4210:1311:24
11:24
#24287
35K
21.75 mi15:06:553:42:5610:158:14
11:00
#24279
23M
23.00 mi15:20:543:56:5510:1813:59
11:10
#24251
24M
24.00 mi15:31:114:07:1210:1810:17
10:17
#24173
40K
24.85 mi15:40:354:16:3610:199:24
11:00
#24141
25.2M
25.20 mi15:44:544:20:5510:214:19
12:31
#24146
Finish
26.22 mi15:54:314:30:3210:209:37
9:26
#24077
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi26609154371543725235(Top 89%)14809(Top 92%)14809(Top 742%)
10K6.21 mi3.10 mi25923+68615129+30815129+30825277(Top 89%)14826(Top 92%)14826(Top 743%)
15K9.32 mi3.11 mi25671+25215006+12315006+12325235(Top 89%)14809(Top 92%)14809(Top 742%)
20K12.43 mi3.11 mi25329+34214841+16514841+16524341(Top 86%)14376(Top 89%)14376(Top 720%)
Half13.11 mi0.68 mi25267+6214815+2614815+2624229(Top 85%)14331(Top 89%)14331(Top 718%)
25K15.53 mi2.42 mi24977+29014679+13614679+13623601(Top 83%)14009(Top 87%)14009(Top 702%)
30K18.64 mi3.11 mi24549+42814456+22314456+22322262(Top 78%)13290(Top 83%)13290(Top 666%)
20M20.00 mi1.36 mi24406+14314379+7714379+7722230(Top 78%)13154(Top 82%)13154(Top 659%)
21M21.00 mi1.00 mi24287+11914299+8014299+8022396(Top 79%)13152(Top 82%)13152(Top 659%)
35K21.75 mi0.75 mi24279+814287+1214287+1224204(Top 85%)13972(Top 87%)13972(Top 700%)
23M23.00 mi1.25 mi24251+2814259+2814259+2823602(Top 83%)13639(Top 85%)13639(Top 683%)
24M24.00 mi1.00 mi24173+7814202+5714202+5722191(Top 78%)12907(Top 80%)12907(Top 647%)
40K24.85 mi0.85 mi24141+3214177+2514177+2523136(Top 81%)13308(Top 83%)13308(Top 667%)
25.2M25.20 mi0.35 mi24146-514174+314174+324218(Top 85%)13881(Top 86%)13881(Top 695%)
Finish26.22 mi1.02 mi24077+6914138+3614138+3620963(Top 74%)12276(Top 76%)12276(Top 615%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21stories
+97ft-345ft

Overall

25235

Males

14809

M50-54

14809

5K→10K

3.1 - 6.2 mi

Top 89%
×5stories
+79ft-138ft

Overall

25277

Males

14826

M50-54

14826

10K→15K

6.2 - 9.3 mi

Top 89%
×3stories
+67ft-78ft

Overall

25235

Males

14809

M50-54

14809

15K→20K

9.3 - 12.4 mi

Top 86%
×5stories
+106ft-86ft

Overall

24341

Males

14376

M50-54

14376

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

24229

Males

14331

M50-54

14331

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

23601

Males

14009

M50-54

14009

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

22262

Males

13290

M50-54

13290

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

22230

Males

13154

M50-54

13154

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

22396

Males

13152

M50-54

13152

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

24204

Males

13972

M50-54

13972

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

23602

Males

13639

M50-54

13639

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

22191

Males

12907

M50-54

12907

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

23136

Males

13308

M50-54

13308

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24218

Males

13881

M50-54

13881

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

20963

Males

12276

M50-54

12276

Passing Analysis

Category:
Athletes Passed
2749
Passed By
217
Net Change
+2532
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26609
5K → 10K69711+686#26609#25923
10K → 15K28331+252#25923#25671
15K → 20K3508+342#25671#25329
20K → Half631+62#25329#25267
Half → 25K2933+290#25267#24977
25K → 30K4302+428#24977#24549
30K → 20M1496+143#24549#24406
20M → 21M13516+119#24406#24287
21M → 35K3830+8#24287#24279
35K → 23M7345+28#24279#24251
23M → 24M8810+78#24251#24173
24M → 40K5927+32#24173#24141
40K → 25.2M1520-5#24141#24146
25.2M → Finish767+69#24146#24077
TOTALS2749217+2532
📊

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