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BOSTON MARATHON 2025

Rolph De Groot

Bib: 8959•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 20%
Gender (Male)
#0 / 16105
Top 31%
Masters (Masters Men)
#0 / 10463
Top 17%
Division (M45-49)
#0 / 2386
Top 23%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:45
Rank: #2815
Start → 5K
19:45 | 6:21/mi
10K· 6.21 mi
39:51
Rank: #3163 (-348)
5K → 10K
20:06 | 6:28/mi
15K· 9.32 mi
1:00:36
Rank: #3710 (-547)
10K → 15K
20:45 | 6:41/mi
20K· 12.43 mi
1:21:51
Rank: #4057 (-347)
15K → 20K
21:15 | 6:50/mi
Half· 13.11 mi
1:26:28
Rank: #4138 (-81)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:43:19
Rank: #4385 (-247)
Half → 25K
16:51 | 6:57/mi
30K· 18.64 mi
2:05:50
Rank: #4749 (-364)
25K → 30K
22:31 | 7:15/mi
20M
2:15:52
Rank: #4872 (-123)
30K → 20M
10:02 | 7:23/mi
21M
2:23:48
Rank: #5003 (-131)
20M → 21M
7:56 | 7:56/mi
35K· 21.75 mi
2:29:10
Rank: #5058 (-55)
21M → 35K
5:22 | 7:10/mi
23M
2:38:45
Rank: #5202 (-144)
35K → 23M
9:35 | 7:39/mi
24M
2:46:14
Rank: #5277 (-75)
23M → 24M
7:29 | 7:29/mi
40K· 24.85 mi
2:52:56
Rank: #5338 (-61)
24M → 40K
6:42 | 7:50/mi
25.2M
2:55:59
Rank: #5382 (-44)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:04:07
Rank: #5550 (-168)
25.2M → Finish
8:08 | 7:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:28
Pace6:36 /mi
2nd Half
Distance13.11 mi
Time1:37:39
Pace7:27 /mi
📊Positive Split: 12.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:44:5519:456:2119:45
6:21
-
10K
6.21 mi11:05:0139:516:2520:06
6:28
+0:07
15K
9.32 mi11:25:461:00:366:3020:45
6:41
+0:13
20K
12.43 mi11:47:011:21:516:3521:15
6:50
+0:09
Half
13.11 mi11:51:381:26:286:364:37
6:46
-0:04
25K
15.53 mi12:08:291:43:196:3916:51
6:57
+0:11
30K
18.64 mi12:31:002:05:506:4522:31
7:15
+0:18
20M
20.00 mi12:41:022:15:526:4810:02
7:23
+0:08
21M
21.00 mi12:48:582:23:486:517:56
7:56
+0:33
35K
21.75 mi12:54:202:29:106:525:22
7:10
-0:46
23M
23.00 mi13:03:552:38:456:549:35
7:39
+0:29
24M
24.00 mi13:11:242:46:146:567:29
7:29
-0:10
40K
24.85 mi13:18:062:52:566:576:42
7:50
+0:21
25.2M
25.20 mi13:21:092:55:596:593:03
8:51
+1:01
Finish
26.22 mi13:29:173:04:077:028:08
7:59
-0:52

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

6:21 /mi

Average Pace

7:02 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:28

47% of race

Time at Steady Pace

1:02:15

34% of race

Time at Slower Pace

35:24

19% of race

Average Pace: 7:01 /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 mi10:44:5519:456:2119:45
6:21
#2815
10K
6.21 mi11:05:0139:516:2520:06
6:28
#3163
15K
9.32 mi11:25:461:00:366:3020:45
6:41
#3710
20K
12.43 mi11:47:011:21:516:3521:15
6:50
#4057
Half
13.11 mi11:51:381:26:286:364:37
6:46
#4138
25K
15.53 mi12:08:291:43:196:3916:51
6:57
#4385
30K
18.64 mi12:31:002:05:506:4522:31
7:15
#4749
20M
20.00 mi12:41:022:15:526:4810:02
7:23
#4872
21M
21.00 mi12:48:582:23:486:517:56
7:56
#5003
35K
21.75 mi12:54:202:29:106:525:22
7:10
#5058
23M
23.00 mi13:03:552:38:456:549:35
7:39
#5202
24M
24.00 mi13:11:242:46:146:567:29
7:29
#5277
40K
24.85 mi13:18:062:52:566:576:42
7:50
#5338
25.2M
25.20 mi13:21:092:55:596:593:03
8:51
#5382
Finish
26.22 mi13:29:173:04:077:028:08
7:59
#5550
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi2815268026804893(Top 17%)4564(Top 28%)4564(Top 191%)
10K6.21 mi3.10 mi3163-3483008-3283008-3283526(Top 12%)3341(Top 21%)3341(Top 140%)
15K9.32 mi3.11 mi3710-5473509-5013509-5014893(Top 17%)4564(Top 28%)4564(Top 191%)
20K12.43 mi3.11 mi4057-3473820-3113820-3115693(Top 20%)5191(Top 32%)5191(Top 218%)
Half13.11 mi0.68 mi4138-813893-733893-735858(Top 21%)5345(Top 33%)5345(Top 224%)
25K15.53 mi2.42 mi4385-2474110-2174110-2175987(Top 21%)5391(Top 33%)5391(Top 226%)
30K18.64 mi3.11 mi4749-3644401-2914401-2916156(Top 22%)5429(Top 34%)5429(Top 228%)
20M20.00 mi1.36 mi4872-1234504-1034504-1036283(Top 22%)5388(Top 33%)5388(Top 226%)
21M21.00 mi1.00 mi5003-1314604-1004604-1006971(Top 25%)5661(Top 35%)5661(Top 237%)
35K21.75 mi0.75 mi5058-554644-404644-406430(Top 23%)5344(Top 33%)5344(Top 224%)
23M23.00 mi1.25 mi5202-1444753-1094753-1097583(Top 27%)5913(Top 37%)5913(Top 248%)
24M24.00 mi1.00 mi5277-754804-514804-517543(Top 27%)5832(Top 36%)5832(Top 244%)
40K24.85 mi0.85 mi5338-614843-394843-398974(Top 32%)6498(Top 40%)6498(Top 272%)
25.2M25.20 mi0.35 mi5382-444867-244867-2410808(Top 38%)7361(Top 46%)7361(Top 309%)
Finish26.22 mi1.02 mi5550-1684984-1174984-11712721(Top 45%)8384(Top 52%)8384(Top 351%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4893

Males

4564

M45-49

4564

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3526

Males

3341

M45-49

3341

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4893

Males

4564

M45-49

4564

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5693

Males

5191

M45-49

5191

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5858

Males

5345

M45-49

5345

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5987

Males

5391

M45-49

5391

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

6156

Males

5429

M45-49

5429

30K→20M

18.6 - 20.0 mi

Top 22%
×5stories
+64ft-50ft

Overall

6283

Males

5388

M45-49

5388

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6971

Males

5661

M45-49

5661

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6430

Males

5344

M45-49

5344

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7583

Males

5913

M45-49

5913

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

7543

Males

5832

M45-49

5832

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8974

Males

6498

M45-49

6498

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10808

Males

7361

M45-49

7361

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

12721

Males

8384

M45-49

8384

Passing Analysis

Category:
Athletes Passed
424
Passed By
3159
Net Change
-2735
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2815
5K → 10K36384-348#2815#3163
10K → 15K10557-547#3163#3710
15K → 20K29376-347#3710#4057
20K → Half384-81#4057#4138
Half → 25K35282-247#4138#4385
25K → 30K64428-364#4385#4749
30K → 20M40163-123#4749#4872
20M → 21M33164-131#4872#5003
21M → 35K3388-55#5003#5058
35K → 23M53197-144#5058#5202
23M → 24M30105-75#5202#5277
24M → 40K3495-61#5277#5338
40K → 25.2M953-44#5338#5382
25.2M → Finish15183-168#5382#5550
TOTALS4243159-2735
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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