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BOSTON MARATHON 2025

Jefferson Lansford

Bib: 7015•M

MD

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 17%
Gender (Male)
#0 / 16105
Top 28%
Division (M18-39)
#0 / 5642
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
6:39/mi
20:40
↑ 97↓ 3451.5%
10K· 6.21 mi
6:31/mi
40:54
↑ 79↓ 1380.4%
15K· 9.32 mi
6:30/mi
1:01:05
↑ 67↓ 78
20K· 12.43 mi
6:34/mi
1:21:30
↑ 106↓ 860.1%
Half· 13.11 mi
6:30/mi
1:25:56
↑ 19↓ 370.5%
25K· 15.53 mi
6:39/mi
1:42:04
↑ 66↓ 880.2%
30K· 18.64 mi
6:56/mi
2:03:37
↑ 181↓ 1480.2%
20M
7:12/mi
2:13:24
↑ 64↓ 500.2%
21M
7:49/mi
2:21:13
↑ 106↓ 241.6%
35K· 21.75 mi
7:00/mi
2:26:27
↑ 17↓ 861.7%
23M
7:29/mi
2:35:49
↑ 23↓ 630.6%
24M
7:38/mi
2:43:27
↓ 821.3%
40K· 24.85 mi
7:57/mi
2:50:15
↓ 200.3%
25.2M
8:42/mi
2:53:15
↑ 13↓ 160.2%
Finish· 26.22 mi
7:43/mi
3:01:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:56
Pace6:33 /mi
2nd Half
Distance13.11 mi
Time1:35:11
Pace7:16 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:4920:406:3920:40
6:39
-
10K
6.21 mi10:47:0340:546:3520:14
6:31
-0:08
15K
9.32 mi11:07:141:01:056:3320:11
6:30
-0:01
20K
12.43 mi11:27:391:21:306:3320:25
6:34
+0:04
Half
13.11 mi11:32:051:25:566:334:26
6:30
-0:04
25K
15.53 mi11:48:131:42:046:3416:08
6:39
+0:09
30K
18.64 mi12:09:462:03:376:3821:33
6:56
+0:17
20M
20.00 mi12:19:332:13:246:409:47
7:12
+0:16
21M
21.00 mi12:27:222:21:136:437:49
7:49
+0:37
35K
21.75 mi12:32:362:26:276:445:14
7:00
-0:49
23M
23.00 mi12:41:582:35:496:469:22
7:29
+0:29
24M
24.00 mi12:49:362:43:276:497:38
7:38
+0:09
40K
24.85 mi12:56:242:50:156:516:48
7:57
+0:19
25.2M
25.20 mi12:59:242:53:156:533:00
8:42
+0:45
Finish
26.22 mi13:07:163:01:076:557:52
7:43
-0:59

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

6:30 /mi

Average Pace

6:55 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:04

56% of race

Time at Steady Pace

36:34

20% of race

Time at Slower Pace

42:29

23% of race

Average Pace: 6:54 /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 mi10:26:4920:406:3920:40
6:39
#5033
10K
6.21 mi10:47:0340:546:3520:14
6:31
#4353
15K
9.32 mi11:07:141:01:056:3320:11
6:30
#4053
20K
12.43 mi11:27:391:21:306:3320:25
6:34
#3867
Half
13.11 mi11:32:051:25:566:334:26
6:30
#3857
25K
15.53 mi11:48:131:42:046:3416:08
6:39
#3818
30K
18.64 mi12:09:462:03:376:3821:33
6:56
#3838
20M
20.00 mi12:19:332:13:246:409:47
7:12
#3911
21M
21.00 mi12:27:222:21:136:437:49
7:49
#4030
35K
21.75 mi12:32:362:26:276:445:14
7:00
#4071
23M
23.00 mi12:41:582:35:496:469:22
7:29
#4186
24M
24.00 mi12:49:362:43:276:497:38
7:38
#4397
40K
24.85 mi12:56:242:50:156:516:48
7:57
#4616
25.2M
25.20 mi12:59:242:53:156:533:00
8:42
#4725
Finish
26.22 mi13:07:163:01:076:557:52
7:43
#4941
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5033469946993547(Top 12%)3354(Top 21%)3354(Top 59%)
10K6.21 mi3.10 mi4353+6804093+6064093+6063819(Top 13%)3600(Top 22%)3600(Top 64%)
15K9.32 mi3.11 mi4053+3003822+2713822+2713547(Top 12%)3354(Top 21%)3354(Top 59%)
20K12.43 mi3.11 mi3867+1863644+1783644+1783531(Top 12%)3341(Top 21%)3341(Top 59%)
Half13.11 mi0.68 mi3857+103634+103634+103655(Top 13%)3455(Top 21%)3455(Top 61%)
25K15.53 mi2.42 mi3818+393598+363598+363815(Top 13%)3575(Top 22%)3575(Top 63%)
30K18.64 mi3.11 mi3838-203616-183616-184312(Top 15%)3955(Top 25%)3955(Top 70%)
20M20.00 mi1.36 mi3911-733673-573673-575175(Top 18%)4605(Top 29%)4605(Top 82%)
21M21.00 mi1.00 mi4030-1193773-1003773-1006247(Top 22%)5215(Top 32%)5215(Top 92%)
35K21.75 mi0.75 mi4071-413801-283801-285284(Top 19%)4566(Top 28%)4566(Top 81%)
23M23.00 mi1.25 mi4186-1153888-873888-876498(Top 23%)5283(Top 33%)5283(Top 94%)
24M24.00 mi1.00 mi4397-2114059-1714059-1718596(Top 30%)6416(Top 40%)6416(Top 114%)
40K24.85 mi0.85 mi4616-2194240-1814240-1819785(Top 34%)6920(Top 43%)6920(Top 123%)
25.2M25.20 mi0.35 mi4725-1094331-914331-919881(Top 35%)6857(Top 43%)6857(Top 122%)
Finish26.22 mi1.02 mi4941-2164501-1704501-17010789(Top 38%)7381(Top 46%)7381(Top 131%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21story building
+97ft-345ft

Overall

3547

Males

3354

M18-39

3354

5K→10K

3.1 - 6.2 mi

Top 13%
×5story building
+79ft-138ft

Overall

3819

Males

3600

M18-39

3600

10K→15K

6.2 - 9.3 mi

Top 12%
×3story building
+67ft-78ft

Overall

3547

Males

3354

M18-39

3354

15K→20K

9.3 - 12.4 mi

Top 12%
×5story building
+106ft-86ft

Overall

3531

Males

3341

M18-39

3341

20K→Half

12.4 - 13.1 mi

Top 13%
×2story building
+19ft-37ft

Overall

3655

Males

3455

M18-39

3455

Half→25K

13.1 - 15.5 mi

Top 13%
×4story building
+66ft-88ft

Overall

3815

Males

3575

M18-39

3575

25K→30K

15.5 - 18.6 mi

Top 15%
×9story building
+181ft-148ft

Overall

4312

Males

3955

M18-39

3955

30K→20M

18.6 - 20.0 mi

Top 18%
×5story building
+64ft-50ft

Overall

5175

Males

4605

M18-39

4605

20M→21M

20.0 - 21.0 mi

Top 22%
×8story building
+106ft-24ft

Overall

6247

Males

5215

M18-39

5215

21M→35K

21.0 - 21.8 mi

Top 19%
×7story building
+17ft-86ft

Overall

5284

Males

4566

M18-39

4566

35K→23M

21.8 - 23.0 mi

Top 23%
×5story building
+23ft-63ft

Overall

6498

Males

5283

M18-39

5283

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

8596

Males

6416

M18-39

6416

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9785

Males

6920

M18-39

6920

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9881

Males

6857

M18-39

6857

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10789

Males

7381

M18-39

7381

Passing Analysis

Category:
Athletes Passed
1604
Passed By
1512
Net Change
+92
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5033
5K → 10K6888+680#5033#4353
10K → 15K31313+300#4353#4053
15K → 20K20519+186#4053#3867
20K → Half177+10#3867#3857
Half → 25K9152+39#3857#3818
25K → 30K102122-20#3818#3838
30K → 20M38111-73#3838#3911
20M → 21M35154-119#3911#4030
21M → 35K3172-41#4030#4071
35K → 23M38153-115#4071#4186
23M → 24M17228-211#4186#4397
24M → 40K18237-219#4397#4616
40K → 25.2M7116-109#4616#4725
25.2M → Finish4220-216#4725#4941
TOTALS16041512+92
📊

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