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BOSTON MARATHON 2025

Grant Lofdahl

Bib: 12755•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 37%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 40%
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:27/mi
23:09
↑ 97↓ 3451.5%
10K· 6.21 mi
7:16/mi
45:44
↑ 79↓ 1380.4%
15K· 9.32 mi
7:25/mi
1:08:45
↑ 67↓ 78
20K· 12.43 mi
7:28/mi
1:31:58
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:37:01
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:55:06
↑ 66↓ 880.2%
30K· 18.64 mi
7:40/mi
2:18:56
↑ 181↓ 1480.2%
20M
7:49/mi
2:29:34
↑ 64↓ 500.2%
21M
8:28/mi
2:38:02
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:43:56
↑ 17↓ 861.7%
23M
8:14/mi
2:54:15
↑ 23↓ 630.6%
24M
8:09/mi
3:02:24
↓ 821.3%
40K· 24.85 mi
8:29/mi
3:09:39
↓ 200.3%
25.2M
9:34/mi
3:12:57
↑ 13↓ 160.2%
Finish· 26.22 mi
8:38/mi
3:21:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:01
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:44:44
Pace7:59 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4023:097:2723:09
7:27
-
10K
6.21 mi11:14:1545:447:2222:35
7:16
-0:11
15K
9.32 mi11:37:161:08:457:2323:01
7:25
+0:09
20K
12.43 mi12:00:291:31:587:2423:13
7:28
+0:03
Half
13.11 mi12:05:321:37:017:245:03
7:24
-0:04
25K
15.53 mi12:23:371:55:067:2518:05
7:27
+0:03
30K
18.64 mi12:47:272:18:567:2723:50
7:40
+0:13
20M
20.00 mi12:58:052:29:347:2910:38
7:49
+0:09
21M
21.00 mi13:06:332:38:027:328:28
8:28
+0:39
35K
21.75 mi13:12:272:43:567:325:54
7:53
-0:35
23M
23.00 mi13:22:462:54:157:3510:19
8:14
+0:21
24M
24.00 mi13:30:553:02:247:368:09
8:09
-0:05
40K
24.85 mi13:38:103:09:397:387:15
8:29
+0:20
25.2M
25.20 mi13:41:283:12:577:393:18
9:34
+1:05
Finish
26.22 mi13:50:163:21:457:428:48
8:38
-0:56

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

7:16 /mi

Average Pace

7:42 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:06

57% of race

Time at Steady Pace

40:22

20% of race

Time at Slower Pace

46:17

23% of race

Average Pace: 7:42 /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 mi10:51:4023:097:2723:09
7:27
#11789
10K
6.21 mi11:14:1545:447:2222:35
7:16
#10854
15K
9.32 mi11:37:161:08:457:2323:01
7:25
#10849
20K
12.43 mi12:00:291:31:587:2423:13
7:28
#10763
Half
13.11 mi12:05:321:37:017:245:03
7:24
#10768
25K
15.53 mi12:23:371:55:067:2518:05
7:27
#10534
30K
18.64 mi12:47:272:18:567:2723:50
7:40
#10178
20M
20.00 mi12:58:052:29:347:2910:38
7:49
#10040
21M
21.00 mi13:06:332:38:027:328:28
8:28
#10043
35K
21.75 mi13:12:272:43:567:325:54
7:53
#10066
23M
23.00 mi13:22:462:54:157:3510:19
8:14
#10151
24M
24.00 mi13:30:553:02:247:368:09
8:09
#10211
40K
24.85 mi13:38:103:09:397:387:15
8:29
#10316
25.2M
25.20 mi13:41:283:12:577:393:18
9:34
#10395
Finish
26.22 mi13:50:163:21:457:428:48
8:38
#10648
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi117899084908410950(Top 39%)8569(Top 53%)8569(Top 359%)
10K6.21 mi3.10 mi10854+9358591+4938591+49310082(Top 35%)8192(Top 51%)8192(Top 343%)
15K9.32 mi3.11 mi10849+58571+208571+2010950(Top 39%)8569(Top 53%)8569(Top 359%)
20K12.43 mi3.11 mi10763+868511+608511+6010520(Top 37%)8271(Top 51%)8271(Top 347%)
Half13.11 mi0.68 mi10768-58511851110836(Top 38%)8461(Top 53%)8461(Top 355%)
25K15.53 mi2.42 mi10534+2348357+1548357+1549605(Top 34%)7656(Top 48%)7656(Top 321%)
30K18.64 mi3.11 mi10178+3568102+2558102+2558992(Top 32%)7138(Top 44%)7138(Top 299%)
20M20.00 mi1.36 mi10040+1388004+988004+989190(Top 32%)7101(Top 44%)7101(Top 298%)
21M21.00 mi1.00 mi10043-37964+407964+4010228(Top 36%)7478(Top 46%)7478(Top 313%)
35K21.75 mi0.75 mi10066-237940+247940+2411426(Top 40%)8060(Top 50%)8060(Top 338%)
23M23.00 mi1.25 mi10151-857941-17941-111607(Top 41%)8035(Top 50%)8035(Top 337%)
24M24.00 mi1.00 mi10211-607942-17942-112218(Top 43%)8274(Top 51%)8274(Top 347%)
40K24.85 mi0.85 mi10316-1057958-167958-1613265(Top 47%)8640(Top 54%)8640(Top 362%)
25.2M25.20 mi0.35 mi10395-797984-267984-2614859(Top 52%)9317(Top 58%)9317(Top 390%)
Finish26.22 mi1.02 mi10648-2538077-938077-9317033(Top 60%)10398(Top 65%)10398(Top 436%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

10950

Males

8569

M45-49

8569

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

10082

Males

8192

M45-49

8192

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

10950

Males

8569

M45-49

8569

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10520

Males

8271

M45-49

8271

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10836

Males

8461

M45-49

8461

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9605

Males

7656

M45-49

7656

25K→30K

15.5 - 18.6 mi

Top 32%
×9story building
+181ft-148ft

Overall

8992

Males

7138

M45-49

7138

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

9190

Males

7101

M45-49

7101

20M→21M

20.0 - 21.0 mi

Top 36%
×8story building
+106ft-24ft

Overall

10228

Males

7478

M45-49

7478

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

11426

Males

8060

M45-49

8060

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

11607

Males

8035

M45-49

8035

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

12218

Males

8274

M45-49

8274

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13265

Males

8640

M45-49

8640

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14859

Males

9317

M45-49

9317

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

17033

Males

10398

M45-49

10398

Passing Analysis

Category:
Athletes Passed
2671
Passed By
1527
Net Change
+1141
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11789
5K → 10K97136+935#11789#10854
10K → 15K176171+5#10854#10849
15K → 20K210124+86#10849#10763
20K → Half3136-5#10763#10768
Half → 25K28450+234#10768#10534
25K → 30K41255+356#10534#10178
30K → 20M18042+138#10178#10040
20M → 21M110112-3#10040#10043
21M → 35K5880-23#10043#10066
35K → 23M79164-85#10066#10151
23M → 24M65125-60#10151#10211
24M → 40K59164-105#10211#10316
40K → 25.2M1493-79#10316#10395
25.2M → Finish22275-253#10395#10648
TOTALS26711527+1141
📊

Passing Visuals

Category:
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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