Boston Marathon logo
BOSTON MARATHON 2025

Kim Lambrechts

Bib: 27533•M

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
8:30/mi
26:26
↑ 97↓ 3451.5%
10K· 6.21 mi
8:39/mi
53:18
↑ 79↓ 1380.4%
15K· 9.32 mi
8:53/mi
1:20:53
↑ 67↓ 78
20K· 12.43 mi
9:03/mi
1:49:00
↑ 106↓ 860.1%
Half· 13.11 mi
8:51/mi
1:55:02
↑ 19↓ 370.5%
25K· 15.53 mi
9:20/mi
2:17:39
↑ 66↓ 880.2%
30K· 18.64 mi
11:52/mi
2:54:32
↑ 181↓ 1480.2%
20M
11:34/mi
3:10:15
↑ 64↓ 500.2%
21M
12:38/mi
3:22:53
↑ 106↓ 241.6%
35K· 21.75 mi
11:50/mi
3:31:44
↑ 17↓ 861.7%
23M
12:02/mi
3:46:48
↑ 23↓ 630.6%
24M
11:37/mi
3:58:25
↓ 821.3%
40K· 24.85 mi
12:40/mi
4:09:15
↓ 200.3%
25.2M
13:06/mi
4:13:46
↑ 13↓ 160.2%
Finish· 26.22 mi
11:27/mi
4:25:26
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:02
Pace8:46 /mi
2nd Half
Distance13.11 mi
Time2:30:24
Pace11:28 /mi
📊Positive Split: 30.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:3726:268:3026:26
8:30
-
10K
6.21 mi12:09:2953:188:3526:52
8:39
+0:09
15K
9.32 mi12:37:041:20:538:4127:35
8:53
+0:14
20K
12.43 mi13:05:111:49:008:4628:07
9:03
+0:10
Half
13.11 mi13:11:131:55:028:466:02
8:51
-0:12
25K
15.53 mi13:33:502:17:398:5222:37
9:20
+0:29
30K
18.64 mi14:10:432:54:329:2236:53
11:52
+2:32
20M
20.00 mi14:26:263:10:159:3115:43
11:34
-0:18
21M
21.00 mi14:39:043:22:539:4012:38
12:38
+1:04
35K
21.75 mi14:47:553:31:449:448:51
11:50
-0:48
23M
23.00 mi15:02:593:46:489:5215:04
12:02
+0:12
24M
24.00 mi15:14:363:58:259:5611:37
11:37
-0:25
40K
24.85 mi15:25:264:09:1510:0210:50
12:40
+1:03
25.2M
25.20 mi15:29:574:13:4610:044:31
13:06
+0:26
Finish
26.22 mi15:41:374:25:2610:0811:40
11:27
-1:39

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

8:30 /mi

Average Pace

10:08 /mi

Slowest Pace

13:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:39

52% of race

Time at Steady Pace

1:39:48

38% of race

Time at Slower Pace

27:59

11% of race

Average Pace: 10:07 /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 mi11:42:3726:268:3026:26
8:30
#19925
10K
6.21 mi12:09:2953:188:3526:52
8:39
#20286
15K
9.32 mi12:37:041:20:538:4127:35
8:53
#20628
20K
12.43 mi13:05:111:49:008:4628:07
9:03
#20774
Half
13.11 mi13:11:131:55:028:466:02
8:51
#20798
25K
15.53 mi13:33:502:17:398:5222:37
9:20
#20914
30K
18.64 mi14:10:432:54:329:2236:53
11:52
#22373
20M
20.00 mi14:26:263:10:159:3115:43
11:34
#22599
21M
21.00 mi14:39:043:22:539:4012:38
12:38
#22760
35K
21.75 mi14:47:553:31:449:448:51
11:50
#22904
23M
23.00 mi15:02:593:46:489:5215:04
12:02
#23083
24M
24.00 mi15:14:363:58:259:5611:37
11:37
#23194
40K
24.85 mi15:25:264:09:1510:0210:50
12:40
#23330
25.2M
25.20 mi15:29:574:13:4610:044:31
13:06
#23378
Finish
26.22 mi15:41:374:25:2610:0811:40
11:27
#23537
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi19925124141241421446(Top 76%)13145(Top 82%)13145(Top 798%)
10K6.21 mi3.10 mi20286-36112588-17412588-17420585(Top 72%)12736(Top 79%)12736(Top 773%)
15K9.32 mi3.11 mi20628-34212748-16012748-16021446(Top 76%)13145(Top 82%)13145(Top 798%)
20K12.43 mi3.11 mi20774-14612806-5812806-5821223(Top 75%)13002(Top 81%)13002(Top 789%)
Half13.11 mi0.68 mi20798-2412819-1312819-1321119(Top 74%)12969(Top 81%)12969(Top 787%)
25K15.53 mi2.42 mi20914-11612864-4512864-4521297(Top 75%)12985(Top 81%)12985(Top 788%)
30K18.64 mi3.11 mi22373-145913479-61513479-61525412(Top 89%)14723(Top 91%)14723(Top 893%)
20M20.00 mi1.36 mi22599-22613550-7113550-7124653(Top 87%)14296(Top 89%)14296(Top 867%)
21M21.00 mi1.00 mi22760-16113605-5513605-5524572(Top 87%)14172(Top 88%)14172(Top 860%)
35K21.75 mi0.75 mi22904-14413657-5213657-5225608(Top 90%)14635(Top 91%)14635(Top 888%)
23M23.00 mi1.25 mi23083-17913715-5813715-5825165(Top 89%)14416(Top 90%)14416(Top 875%)
24M24.00 mi1.00 mi23194-11113740-2513740-2525089(Top 88%)14349(Top 89%)14349(Top 871%)
40K24.85 mi0.85 mi23330-13613797-5713797-5725890(Top 91%)14733(Top 91%)14733(Top 894%)
25.2M25.20 mi0.35 mi23378-4813814-1713814-1725177(Top 89%)14330(Top 89%)14330(Top 870%)
Finish26.22 mi1.02 mi23537-15913868-5413868-5426053(Top 92%)14809(Top 92%)14809(Top 899%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21446

Males

13145

M55-59

13145

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20585

Males

12736

M55-59

12736

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21446

Males

13145

M55-59

13145

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

21223

Males

13002

M55-59

13002

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

21119

Males

12969

M55-59

12969

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

21297

Males

12985

M55-59

12985

25K→30K

15.5 - 18.6 mi

Top 89%
×9story building
+181ft-148ft

Overall

25412

Males

14723

M55-59

14723

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

24653

Males

14296

M55-59

14296

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

24572

Males

14172

M55-59

14172

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

25608

Males

14635

M55-59

14635

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

25165

Males

14416

M55-59

14416

23M→24M

23.0 - 24.0 mi

Top 88%
×6story building
+12ft-82ft

Overall

25089

Males

14349

M55-59

14349

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

25890

Males

14733

M55-59

14733

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

25177

Males

14330

M55-59

14330

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

26053

Males

14809

M55-59

14809

Passing Analysis

Category:
Athletes Passed
701
Passed By
4313
Net Change
-3612
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19925
5K → 10K140501-361#19925#20286
10K → 15K96438-342#20286#20628
15K → 20K134280-146#20628#20774
20K → Half2145-24#20774#20798
Half → 25K116232-116#20798#20914
25K → 30K191478-1459#20914#22373
30K → 20M30256-226#22373#22599
20M → 21M34195-161#22599#22760
21M → 35K15159-144#22760#22904
35K → 23M29208-179#22904#23083
23M → 24M27138-111#23083#23194
24M → 40K21157-136#23194#23330
40K → 25.2M1159-48#23330#23378
25.2M → Finish8167-159#23378#23537
TOTALS7014313-3612
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing