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BOSTON MARATHON 2025

Christian Groff

Bib: 3432•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Male)
#0 / 16105
Top 14%
Division (M18-39)
#0 / 5642
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:52
Rank: #5565
Start → 5K
20:52 | 6:43/mi
10K· 6.21 mi
41:43
Rank: #5489 (+76)
5K → 10K
20:51 | 6:43/mi
15K· 9.32 mi
1:03:01
Rank: #5811 (-322)
10K → 15K
21:18 | 6:51/mi
20K· 12.43 mi
1:23:43
Rank: #5332 (+479)
15K → 20K
20:42 | 6:40/mi
Half· 13.11 mi
1:28:17
Rank: #5314 (+18)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:44:26
Rank: #4996 (+318)
Half → 25K
16:09 | 6:40/mi
30K· 18.64 mi
2:04:59
Rank: #4354 (+642)
25K → 30K
20:33 | 6:37/mi
20M
2:13:50
Rank: #4048 (+306)
30K → 20M
8:51 | 6:31/mi
21M
2:20:24
Rank: #3755 (+293)
20M → 21M
6:34 | 6:34/mi
35K· 21.75 mi
2:24:45
Rank: #3548 (+207)
21M → 35K
4:21 | 5:49/mi
23M
2:32:06
Rank: #3128 (+420)
35K → 23M
7:21 | 5:52/mi
24M
2:37:53
Rank: #2873 (+255)
23M → 24M
5:47 | 5:47/mi
40K· 24.85 mi
2:42:46
Rank: #2650 (+223)
24M → 40K
4:53 | 5:43/mi
25.2M
2:44:55
Rank: #2558 (+92)
40K → 25.2M
2:09 | 6:14/mi
Finish· 26.22 mi
2:50:36
Rank: #2375 (+183)
25.2M → Finish
5:41 | 5:35/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:28:17
Pace6:44 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:22:19
Pace6:17 /mi
📊Negative Split: 6.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3320:526:4320:52
6:43
-
10K
6.21 mi10:44:2441:436:4320:51
6:43
0:00
15K
9.32 mi11:05:421:03:016:4621:18
6:51
+0:08
20K
12.43 mi11:26:241:23:436:4420:42
6:40
-0:11
Half
13.11 mi11:30:581:28:176:444:34
6:42
+0:02
25K
15.53 mi11:47:071:44:266:4316:09
6:40
-0:02
30K
18.64 mi12:07:402:04:596:4220:33
6:37
-0:03
20M
20.00 mi12:16:312:13:506:418:51
6:31
-0:06
21M
21.00 mi12:23:052:20:246:416:34
6:34
+0:03
35K
21.75 mi12:27:262:24:456:394:21
5:49
-0:45
23M
23.00 mi12:34:472:32:066:377:21
5:52
+0:03
24M
24.00 mi12:40:342:37:536:355:47
5:47
-0:05
40K
24.85 mi12:45:272:42:466:334:53
5:43
-0:04
25.2M
25.20 mi12:47:362:44:556:332:09
6:14
+0:31
Finish
26.22 mi12:53:172:50:366:315:41
5:35
-0:39

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

5:35 /mi

Average Pace

6:31 /mi

Slowest Pace

6:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

30:12

18% of race

Time at Steady Pace

1:59:06

70% of race

Time at Slower Pace

21:18

12% of race

Average Pace: 6:30 /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 mi10:23:3320:526:4320:52
6:43
#5565
10K
6.21 mi10:44:2441:436:4320:51
6:43
#5489
15K
9.32 mi11:05:421:03:016:4621:18
6:51
#5811
20K
12.43 mi11:26:241:23:436:4420:42
6:40
#5332
Half
13.11 mi11:30:581:28:176:444:34
6:42
#5314
25K
15.53 mi11:47:071:44:266:4316:09
6:40
#4996
30K
18.64 mi12:07:402:04:596:4220:33
6:37
#4354
20M
20.00 mi12:16:312:13:506:418:51
6:31
#4048
21M
21.00 mi12:23:052:20:246:416:34
6:34
#3755
35K
21.75 mi12:27:262:24:456:394:21
5:49
#3548
23M
23.00 mi12:34:472:32:066:377:21
5:52
#3128
24M
24.00 mi12:40:342:37:536:355:47
5:47
#2873
40K
24.85 mi12:45:272:42:466:334:53
5:43
#2650
25.2M
25.20 mi12:47:362:44:556:332:09
6:14
#2558
Finish
26.22 mi12:53:172:50:366:315:41
5:35
#2375
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5565515051506610(Top 23%)5948(Top 37%)5948(Top 105%)
10K6.21 mi3.10 mi5489+765073+775073+775419(Top 19%)5003(Top 31%)5003(Top 89%)
15K9.32 mi3.11 mi5811-3225338-2655338-2656610(Top 23%)5948(Top 37%)5948(Top 105%)
20K12.43 mi3.11 mi5332+4794932+4064932+4064088(Top 14%)3833(Top 24%)3833(Top 68%)
Half13.11 mi0.68 mi5314+184917+154917+155130(Top 18%)4725(Top 29%)4725(Top 84%)
25K15.53 mi2.42 mi4996+3184635+2824635+2823837(Top 14%)3592(Top 22%)3592(Top 64%)
30K18.64 mi3.11 mi4354+6424072+5634072+5632467(Top 9%)2335(Top 14%)2335(Top 41%)
20M20.00 mi1.36 mi4048+3063790+2823790+2821676(Top 6%)1584(Top 10%)1584(Top 28%)
21M21.00 mi1.00 mi3755+2933530+2603530+260838(Top 3%)793(Top 5%)793(Top 14%)
35K21.75 mi0.75 mi3548+2073340+1903340+190407(Top 1%)381(Top 2%)381(Top 7%)
23M23.00 mi1.25 mi3128+4202956+3842956+384216(Top 0.8%)200(Top 1%)200(Top 4%)
24M24.00 mi1.00 mi2873+2552718+2382718+238272(Top 1.0%)250(Top 2%)250(Top 4%)
40K24.85 mi0.85 mi2650+2232512+2062512+206142(Top 0.5%)134(Top 0.8%)134(Top 2%)
25.2M25.20 mi0.35 mi2558+922424+882424+88196(Top 0.7%)186(Top 1%)186(Top 3%)
Finish26.22 mi1.02 mi2375+1832251+1732251+173212(Top 0.7%)200(Top 1%)200(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6610

Males

5948

M18-39

5948

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5419

Males

5003

M18-39

5003

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6610

Males

5948

M18-39

5948

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

4088

Males

3833

M18-39

3833

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

5130

Males

4725

M18-39

4725

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3837

Males

3592

M18-39

3592

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2467

Males

2335

M18-39

2335

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1676

Males

1584

M18-39

1584

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

838

Males

793

M18-39

793

21M→35K

21.0 - 21.8 mi

Top 1%
×7stories
+17ft-86ft

Overall

407

Males

381

M18-39

381

35K→23M

21.8 - 23.0 mi

Top 0.8%
×5stories
+23ft-63ft

Overall

216

Males

200

M18-39

200

23M→24M

23.0 - 24.0 mi

Top 1.0%
×6stories
+12ft-82ft

Overall

272

Males

250

M18-39

250

24M→40K

24.0 - 24.9 mi

Top 0.5%
×1story
+6ft-20ft

Overall

142

Males

134

M18-39

134

40K→25.2M

24.9 - 25.2 mi

Top 0.7%
×1story
+13ft-16ft

Overall

196

Males

186

M18-39

186

25.2M→Finish

25.2 - 26.2 mi

Top 0.7%
×2stories
+22ft-21ft

Overall

212

Males

200

M18-39

200

Passing Analysis

Category:
Athletes Passed
3747
Passed By
557
Net Change
+3190
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5565
5K → 10K226150+76#5565#5489
10K → 15K55377-322#5489#5811
15K → 20K4801+479#5811#5332
20K → Half3517+18#5332#5314
Half → 25K3268+318#5314#4996
25K → 30K6442+642#4996#4354
30K → 20M3071+306#4354#4048
20M → 21M2941+293#4048#3755
21M → 35K2070+207#3755#3548
35K → 23M4200+420#3548#3128
23M → 24M2550+255#3128#2873
24M → 40K2230+223#2873#2650
40K → 25.2M920+92#2650#2558
25.2M → Finish1830+183#2558#2375
TOTALS3747557+3190
📊

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