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BOSTON MARATHON 2025

Warren Grobler

Bib: 6821•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 23%
Gender (Male)
#0 / 16105
Top 36%
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
6:41/mi
20:47
↑ 97↓ 3451.5%
10K· 6.21 mi
6:39/mi
41:27
↑ 79↓ 1380.4%
15K· 9.32 mi
6:43/mi
1:02:20
↑ 67↓ 78
20K· 12.43 mi
6:41/mi
1:23:07
↑ 106↓ 860.1%
Half· 13.11 mi
6:40/mi
1:27:40
↑ 19↓ 370.5%
25K· 15.53 mi
6:47/mi
1:44:06
↑ 66↓ 880.2%
30K· 18.64 mi
6:57/mi
2:05:42
↑ 181↓ 1480.2%
20M
7:03/mi
2:15:17
↑ 64↓ 500.2%
21M
7:44/mi
2:23:01
↑ 106↓ 241.6%
35K· 21.75 mi
7:02/mi
2:28:17
↑ 17↓ 861.7%
23M
7:26/mi
2:37:36
↑ 23↓ 630.6%
24M
7:36/mi
2:45:12
↓ 821.3%
40K· 24.85 mi
9:37/mi
2:53:25
↓ 200.3%
25.2M
10:09/mi
2:56:55
↑ 13↓ 160.2%
Finish· 26.22 mi
11:28/mi
3:08:36
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:40
Pace6:41 /mi
2nd Half
Distance13.11 mi
Time1:40:56
Pace7:42 /mi
📊Positive Split: 15.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:5320:476:4120:47
6:41
-
10K
6.21 mi10:47:3341:276:4020:40
6:39
-0:02
15K
9.32 mi11:08:261:02:206:4120:53
6:43
+0:04
20K
12.43 mi11:29:131:23:076:4120:47
6:41
-0:02
Half
13.11 mi11:33:461:27:406:414:33
6:40
-0:01
25K
15.53 mi11:50:121:44:066:4216:26
6:47
+0:07
30K
18.64 mi12:11:482:05:426:4521:36
6:57
+0:10
20M
20.00 mi12:21:232:15:176:469:35
7:03
+0:06
21M
21.00 mi12:29:072:23:016:497:44
7:44
+0:41
35K
21.75 mi12:34:232:28:176:495:16
7:02
-0:42
23M
23.00 mi12:43:422:37:366:519:19
7:26
+0:24
24M
24.00 mi12:51:182:45:126:537:36
7:36
+0:10
40K
24.85 mi12:59:312:53:256:598:13
9:37
+2:01
25.2M
25.20 mi13:03:012:56:557:013:30
10:09
+0:32
Finish
26.22 mi13:14:423:08:367:1211:41
11:28
+1:19

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

6:39 /mi

Average Pace

7:12 /mi

Slowest Pace

11:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:45:12

88% of race

Time at Slower Pace

23:24

12% of race

Average Pace: 7:12 /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 mi10:26:5320:476:4120:47
6:41
#5362
10K
6.21 mi10:47:3341:276:4020:40
6:39
#5118
15K
9.32 mi11:08:261:02:206:4120:53
6:43
#5141
20K
12.43 mi11:29:131:23:076:4120:47
6:41
#4892
Half
13.11 mi11:33:461:27:406:414:33
6:40
#4896
25K
15.53 mi11:50:121:44:066:4216:26
6:47
#4816
30K
18.64 mi12:11:482:05:426:4521:36
6:57
#4682
20M
20.00 mi12:21:232:15:176:469:35
7:03
#4637
21M
21.00 mi12:29:072:23:016:497:44
7:44
#4692
35K
21.75 mi12:34:232:28:176:495:16
7:02
#4707
23M
23.00 mi12:43:422:37:366:519:19
7:26
#4804
24M
24.00 mi12:51:182:45:126:537:36
7:36
#5007
40K
24.85 mi12:59:312:53:256:598:13
9:37
#5444
25.2M
25.20 mi13:03:012:56:557:013:30
10:09
#5579
Finish
26.22 mi13:14:423:08:367:1211:41
11:28
#6652
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5362498649865298(Top 19%)4897(Top 30%)4897(Top 87%)
10K6.21 mi3.10 mi5118+2444770+2164770+2164910(Top 17%)4586(Top 28%)4586(Top 81%)
15K9.32 mi3.11 mi5141-234785-154785-155298(Top 19%)4897(Top 30%)4897(Top 87%)
20K12.43 mi3.11 mi4892+2494560+2254560+2254355(Top 15%)4073(Top 25%)4073(Top 72%)
Half13.11 mi0.68 mi4896-44563-34563-35068(Top 18%)4697(Top 29%)4697(Top 83%)
25K15.53 mi2.42 mi4816+804479+844479+844718(Top 17%)4347(Top 27%)4347(Top 77%)
30K18.64 mi3.11 mi4682+1344349+1304349+1304410(Top 16%)4038(Top 25%)4038(Top 72%)
20M20.00 mi1.36 mi4637+454300+494300+494436(Top 16%)4042(Top 25%)4042(Top 72%)
21M21.00 mi1.00 mi4692-554346-464346-465836(Top 21%)4955(Top 31%)4955(Top 88%)
35K21.75 mi0.75 mi4707-15434643465649(Top 20%)4837(Top 30%)4837(Top 86%)
23M23.00 mi1.25 mi4804-974417-714417-716296(Top 22%)5153(Top 32%)5153(Top 91%)
24M24.00 mi1.00 mi5007-2034579-1624579-1628388(Top 30%)6317(Top 39%)6317(Top 112%)
40K24.85 mi0.85 mi5444-4374923-3444923-34419099(Top 67%)11360(Top 71%)11360(Top 201%)
25.2M25.20 mi0.35 mi5579-1355018-955018-9517585(Top 62%)10608(Top 66%)10608(Top 188%)
Finish26.22 mi1.02 mi6652-10735760-7425760-74226083(Top 92%)14825(Top 92%)14825(Top 263%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21story building
+97ft-345ft

Overall

5298

Males

4897

M18-39

4897

5K→10K

3.1 - 6.2 mi

Top 17%
×5story building
+79ft-138ft

Overall

4910

Males

4586

M18-39

4586

10K→15K

6.2 - 9.3 mi

Top 19%
×3story building
+67ft-78ft

Overall

5298

Males

4897

M18-39

4897

15K→20K

9.3 - 12.4 mi

Top 15%
×5story building
+106ft-86ft

Overall

4355

Males

4073

M18-39

4073

20K→Half

12.4 - 13.1 mi

Top 18%
×2story building
+19ft-37ft

Overall

5068

Males

4697

M18-39

4697

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4718

Males

4347

M18-39

4347

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4410

Males

4038

M18-39

4038

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4436

Males

4042

M18-39

4042

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

5836

Males

4955

M18-39

4955

21M→35K

21.0 - 21.8 mi

Top 20%
×7story building
+17ft-86ft

Overall

5649

Males

4837

M18-39

4837

35K→23M

21.8 - 23.0 mi

Top 22%
×5story building
+23ft-63ft

Overall

6296

Males

5153

M18-39

5153

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

8388

Males

6317

M18-39

6317

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

19099

Males

11360

M18-39

11360

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17585

Males

10608

M18-39

10608

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

26083

Males

14825

M18-39

14825

Passing Analysis

Category:
Athletes Passed
1390
Passed By
2680
Net Change
-1290
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5362
5K → 10K32480+244#5362#5118
10K → 15K127150-23#5118#5141
15K → 20K26819+249#5141#4892
20K → Half2226-4#4892#4896
Half → 25K14060+80#4896#4816
25K → 30K22389+134#4816#4682
30K → 20M9651+45#4682#4637
20M → 21M55110-55#4637#4692
21M → 35K4257-15#4692#4707
35K → 23M55152-97#4707#4804
23M → 24M20223-203#4804#5007
24M → 40K11448-437#5007#5444
40K → 25.2M6141-135#5444#5579
25.2M → Finish11074-1073#5579#6652
TOTALS13902680-1290
📊

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