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BOSTON MARATHON 2025

Christian Groom

Bib: 4228•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 11%
Gender (Male)
#0 / 16105
Top 18%
Division (M18-39)
#0 / 5642
Top 41%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:41
Rank: #2664
Start → 5K
19:41 | 6:20/mi
10K· 6.21 mi
39:10
Rank: #2431 (+233)
5K → 10K
19:29 | 6:16/mi
15K· 9.32 mi
58:53
Rank: #2488 (-57)
10K → 15K
19:43 | 6:21/mi
20K· 12.43 mi
1:18:55
Rank: #2550 (-62)
15K → 20K
20:02 | 6:27/mi
Half· 13.11 mi
1:23:15
Rank: #2564 (-14)
20K → Half
4:20 | 6:21/mi
25K· 15.53 mi
1:38:54
Rank: #2554 (+10)
Half → 25K
15:39 | 6:27/mi
30K· 18.64 mi
2:00:08
Rank: #2697 (-143)
25K → 30K
21:14 | 6:50/mi
20M
2:09:53
Rank: #2831 (-134)
30K → 20M
9:45 | 7:10/mi
21M
2:17:56
Rank: #3041 (-210)
20M → 21M
8:03 | 8:03/mi
35K· 21.75 mi
2:23:05
Rank: #3068 (-27)
21M → 35K
5:09 | 6:53/mi
23M
2:32:17
Rank: #3171 (-103)
35K → 23M
9:12 | 7:21/mi
24M
2:39:21
Rank: #3211 (-40)
23M → 24M
7:04 | 7:04/mi
40K· 24.85 mi
2:45:18
Rank: #3199 (+12)
24M → 40K
5:57 | 6:58/mi
25.2M
2:47:51
Rank: #3173 (+26)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:54:34
Rank: #3134 (+39)
25.2M → Finish
6:43 | 6:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:15
Pace6:21 /mi
2nd Half
Distance13.11 mi
Time1:31:19
Pace6:58 /mi
📊Positive Split: 9.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:1819:416:2019:41
6:20
-
10K
6.21 mi10:41:4739:106:1819:29
6:16
-0:04
15K
9.32 mi11:01:3058:536:1919:43
6:21
+0:05
20K
12.43 mi11:21:321:18:556:2120:02
6:27
+0:06
Half
13.11 mi11:25:521:23:156:214:20
6:21
-0:06
25K
15.53 mi11:41:311:38:546:2215:39
6:27
+0:06
30K
18.64 mi12:02:452:00:086:2721:14
6:50
+0:23
20M
20.00 mi12:12:302:09:536:309:45
7:10
+0:20
21M
21.00 mi12:20:332:17:566:348:03
8:03
+0:53
35K
21.75 mi12:25:422:23:056:355:09
6:53
-1:10
23M
23.00 mi12:34:542:32:176:379:12
7:21
+0:28
24M
24.00 mi12:41:582:39:216:387:04
7:04
-0:17
40K
24.85 mi12:47:552:45:186:395:57
6:58
-0:06
25.2M
25.20 mi12:50:282:47:516:402:33
7:24
+0:26
Finish
26.22 mi12:57:112:54:346:406:43
6:35
-0:49

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

6:16 /mi

Average Pace

6:40 /mi

Slowest Pace

8:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:37

61% of race

Time at Steady Pace

39:24

23% of race

Time at Slower Pace

29:33

17% of race

Average Pace: 6:39 /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 mi10:22:1819:416:2019:41
6:20
#2664
10K
6.21 mi10:41:4739:106:1819:29
6:16
#2431
15K
9.32 mi11:01:3058:536:1919:43
6:21
#2488
20K
12.43 mi11:21:321:18:556:2120:02
6:27
#2550
Half
13.11 mi11:25:521:23:156:214:20
6:21
#2564
25K
15.53 mi11:41:311:38:546:2215:39
6:27
#2554
30K
18.64 mi12:02:452:00:086:2721:14
6:50
#2697
20M
20.00 mi12:12:302:09:536:309:45
7:10
#2831
21M
21.00 mi12:20:332:17:566:348:03
8:03
#3041
35K
21.75 mi12:25:422:23:056:355:09
6:53
#3068
23M
23.00 mi12:34:542:32:176:379:12
7:21
#3171
24M
24.00 mi12:41:582:39:216:387:04
7:04
#3211
40K
24.85 mi12:47:552:45:186:395:57
6:58
#3199
25.2M
25.20 mi12:50:282:47:516:402:33
7:24
#3173
Finish
26.22 mi12:57:112:54:346:406:43
6:35
#3134
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2664253925392611(Top 9%)2491(Top 15%)2491(Top 44%)
10K6.21 mi3.10 mi2431+2332318+2212318+2212228(Top 8%)2129(Top 13%)2129(Top 38%)
15K9.32 mi3.11 mi2488-572374-562374-562611(Top 9%)2491(Top 15%)2491(Top 44%)
20K12.43 mi3.11 mi2550-622433-592433-592803(Top 10%)2668(Top 17%)2668(Top 47%)
Half13.11 mi0.68 mi2564-142450-172450-172777(Top 10%)2653(Top 16%)2653(Top 47%)
25K15.53 mi2.42 mi2554+102438+122438+122635(Top 9%)2508(Top 16%)2508(Top 44%)
30K18.64 mi3.11 mi2697-1432575-1372575-1373645(Top 13%)3375(Top 21%)3375(Top 60%)
20M20.00 mi1.36 mi2831-1342697-1222697-1225034(Top 18%)4501(Top 28%)4501(Top 80%)
21M21.00 mi1.00 mi3041-2102880-1832880-1837584(Top 27%)6002(Top 37%)6002(Top 106%)
35K21.75 mi0.75 mi3068-272905-252905-254563(Top 16%)4041(Top 25%)4041(Top 72%)
23M23.00 mi1.25 mi3171-1032993-882993-885703(Top 20%)4790(Top 30%)4790(Top 85%)
24M24.00 mi1.00 mi3211-403028-353028-354974(Top 18%)4231(Top 26%)4231(Top 75%)
40K24.85 mi0.85 mi3199+123013+153013+153647(Top 13%)3217(Top 20%)3217(Top 57%)
25.2M25.20 mi0.35 mi3173+262987+262987+262883(Top 10%)2562(Top 16%)2562(Top 45%)
Finish26.22 mi1.02 mi3134+392952+352952+353271(Top 12%)2879(Top 18%)2879(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2611

Males

2491

M18-39

2491

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2228

Males

2129

M18-39

2129

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2611

Males

2491

M18-39

2491

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2803

Males

2668

M18-39

2668

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2777

Males

2653

M18-39

2653

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2635

Males

2508

M18-39

2508

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3645

Males

3375

M18-39

3375

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

5034

Males

4501

M18-39

4501

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7584

Males

6002

M18-39

6002

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4563

Males

4041

M18-39

4041

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5703

Males

4790

M18-39

4790

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4974

Males

4231

M18-39

4231

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3647

Males

3217

M18-39

3217

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2883

Males

2562

M18-39

2562

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3271

Males

2879

M18-39

2879

Passing Analysis

Category:
Athletes Passed
780
Passed By
1250
Net Change
-470
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2664
5K → 10K26128+233#2664#2431
10K → 15K65122-57#2431#2488
15K → 20K51113-62#2488#2550
20K → Half1125-14#2550#2564
Half → 25K6656+10#2564#2554
25K → 30K46189-143#2554#2697
30K → 20M27161-134#2697#2831
20M → 21M10220-210#2831#3041
21M → 35K2350-27#3041#3068
35K → 23M41144-103#3068#3171
23M → 24M2464-40#3171#3211
24M → 40K4836+12#3211#3199
40K → 25.2M3812+26#3199#3173
25.2M → Finish6930+39#3173#3134
TOTALS7801250-470
📊

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