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BOSTON MARATHON 2025

David Langford

Bib: 10185•M

AR

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

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
7:41/mi
23:52
↑ 97↓ 3451.5%
10K· 6.21 mi
8:02/mi
48:50
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:13:26
↑ 67↓ 78
20K· 12.43 mi
8:08/mi
1:38:43
↑ 106↓ 860.1%
Half· 13.11 mi
7:50/mi
1:44:04
↑ 19↓ 370.5%
25K· 15.53 mi
8:13/mi
2:04:00
↑ 66↓ 880.2%
30K· 18.64 mi
8:44/mi
2:31:09
↑ 181↓ 1480.2%
20M
8:56/mi
2:43:18
↑ 64↓ 500.2%
21M
8:57/mi
2:52:15
↑ 106↓ 241.6%
35K· 21.75 mi
7:55/mi
2:58:10
↑ 17↓ 861.7%
23M
8:15/mi
3:08:30
↑ 23↓ 630.6%
24M
8:15/mi
3:16:45
↓ 821.3%
40K· 24.85 mi
8:49/mi
3:24:17
↓ 200.3%
25.2M
9:40/mi
3:27:37
↑ 13↓ 160.2%
Finish· 26.22 mi
7:56/mi
3:35:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:04
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time1:51:38
Pace8:31 /mi
📊Positive Split: 7.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4023:527:4123:52
7:41
-
10K
6.21 mi11:14:3848:507:5224:58
8:02
+0:21
15K
9.32 mi11:39:141:13:267:5324:36
7:55
-0:07
20K
12.43 mi12:04:311:38:437:5725:17
8:08
+0:13
Half
13.11 mi12:09:521:44:047:565:21
7:50
-0:18
25K
15.53 mi12:29:482:04:007:5919:56
8:13
+0:23
30K
18.64 mi12:56:572:31:098:0727:09
8:44
+0:31
20M
20.00 mi13:09:062:43:188:1012:09
8:56
+0:12
21M
21.00 mi13:18:032:52:158:128:57
8:57
+0:01
35K
21.75 mi13:23:582:58:108:125:55
7:55
-1:02
23M
23.00 mi13:34:183:08:308:1210:20
8:15
+0:20
24M
24.00 mi13:42:333:16:458:128:15
8:15
0:00
40K
24.85 mi13:50:053:24:178:137:32
8:49
+0:34
25.2M
25.20 mi13:53:253:27:378:143:20
9:40
+0:51
Finish
26.22 mi14:01:303:35:428:148:05
7:56
-1:44

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

7:41 /mi

Average Pace

8:14 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:07:49

31% of race

Time at Steady Pace

1:28:46

41% of race

Time at Slower Pace

59:07

27% of race

Average Pace: 8:14 /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 mi10:49:4023:527:4123:52
7:41
#13800
10K
6.21 mi11:14:3848:507:5224:58
8:02
#15318
15K
9.32 mi11:39:141:13:267:5324:36
7:55
#15315
20K
12.43 mi12:04:311:38:437:5725:17
8:08
#15488
Half
13.11 mi12:09:521:44:047:565:21
7:50
#15424
25K
15.53 mi12:29:482:04:007:5919:56
8:13
#15403
30K
18.64 mi12:56:572:31:098:0727:09
8:44
#15564
20M
20.00 mi13:09:062:43:188:1012:09
8:56
#15591
21M
21.00 mi13:18:032:52:158:128:57
8:57
#15409
35K
21.75 mi13:23:582:58:108:125:55
7:55
#15233
23M
23.00 mi13:34:183:08:308:1210:20
8:15
#14986
24M
24.00 mi13:42:333:16:458:128:15
8:15
#14865
40K
24.85 mi13:50:053:24:178:137:32
8:49
#14873
25.2M
25.20 mi13:53:253:27:378:143:20
9:40
#14870
Finish
26.22 mi14:01:303:35:428:148:05
7:56
#14746
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi138009986998615363(Top 54%)10528(Top 65%)10528(Top 441%)
10K6.21 mi3.10 mi15318-151810541-55510541-55516730(Top 59%)11123(Top 69%)11123(Top 466%)
15K9.32 mi3.11 mi15315+310531+1010531+1015363(Top 54%)10528(Top 65%)10528(Top 441%)
20K12.43 mi3.11 mi15488-17310593-6210593-6215889(Top 56%)10694(Top 66%)10694(Top 448%)
Half13.11 mi0.68 mi15424+6410556+3710556+3714561(Top 51%)10142(Top 63%)10142(Top 425%)
25K15.53 mi2.42 mi15403+2110522+3410522+3415427(Top 54%)10410(Top 65%)10410(Top 436%)
30K18.64 mi3.11 mi15564-16110542-2010542-2016215(Top 57%)10574(Top 66%)10574(Top 443%)
20M20.00 mi1.36 mi15591-2710520+2210520+2216455(Top 58%)10557(Top 66%)10557(Top 442%)
21M21.00 mi1.00 mi15409+18210410+11010410+11013197(Top 46%)8953(Top 56%)8953(Top 375%)
35K21.75 mi0.75 mi15233+17610320+9010320+9011626(Top 41%)8161(Top 51%)8161(Top 342%)
23M23.00 mi1.25 mi14986+24710185+13510185+13511694(Top 41%)8078(Top 50%)8078(Top 339%)
24M24.00 mi1.00 mi14865+12110097+8810097+8812969(Top 46%)8617(Top 54%)8617(Top 361%)
40K24.85 mi0.85 mi14873-810071+2610071+2615225(Top 54%)9536(Top 59%)9536(Top 400%)
25.2M25.20 mi0.35 mi14870+310063+810063+815383(Top 54%)9578(Top 59%)9578(Top 401%)
Finish26.22 mi1.02 mi14746+1249979+849979+8412411(Top 44%)8244(Top 51%)8244(Top 346%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15363

Males

10528

M45-49

10528

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16730

Males

11123

M45-49

11123

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15363

Males

10528

M45-49

10528

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15889

Males

10694

M45-49

10694

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

14561

Males

10142

M45-49

10142

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

15427

Males

10410

M45-49

10410

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

16215

Males

10574

M45-49

10574

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

16455

Males

10557

M45-49

10557

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

13197

Males

8953

M45-49

8953

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

11626

Males

8161

M45-49

8161

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

11694

Males

8078

M45-49

8078

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12969

Males

8617

M45-49

8617

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15225

Males

9536

M45-49

9536

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15383

Males

9578

M45-49

9578

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

12411

Males

8244

M45-49

8244

Passing Analysis

Category:
Athletes Passed
2005
Passed By
2951
Net Change
-946
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13800
5K → 10K351553-1518#13800#15318
10K → 15K206203+3#15318#15315
15K → 20K158331-173#15315#15488
20K → Half739+64#15488#15424
Half → 25K187166+21#15424#15403
25K → 30K193354-161#15403#15564
30K → 20M109136-27#15564#15591
20M → 21M21129+182#15591#15409
21M → 35K1804+176#15409#15233
35K → 23M2558+247#15233#14986
23M → 24M14625+121#14986#14865
24M → 40K7482-8#14865#14873
40K → 25.2M3936+3#14873#14870
25.2M → Finish13915+124#14870#14746
TOTALS20052951-946
📊

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