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BOSTON MARATHON 2023

Chris Loftus

Bib: 30074•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:41
Rank: #21302
Start → 5K
28:41 | 9:14/mi
10K· 6.21 mi
55:51
Rank: #20599 (+703)
5K → 10K
27:10 | 8:45/mi
15K· 9.32 mi
1:23:19
Rank: #20294 (+305)
10K → 15K
27:28 | 8:50/mi
20K· 12.43 mi
1:51:25
Rank: #20186 (+108)
15K → 20K
28:06 | 9:03/mi
Half· 13.11 mi
1:57:23
Rank: #20145 (+41)
20K → Half
5:58 | 8:45/mi
25K· 15.53 mi
2:19:05
Rank: #19906 (+239)
Half → 25K
21:42 | 8:57/mi
30K· 18.64 mi
2:49:48
Rank: #20096 (-190)
25K → 30K
30:43 | 9:53/mi
20M
3:03:32
Rank: #20164 (-68)
30K → 20M
13:44 | 10:06/mi
21M
3:15:34
Rank: #20375 (-211)
20M → 21M
12:02 | 12:02/mi
35K· 21.75 mi
3:23:43
Rank: #20521 (-146)
21M → 35K
8:09 | 10:54/mi
23M
3:38:08
Rank: #20752 (-231)
35K → 23M
14:25 | 11:31/mi
24M
3:49:49
Rank: #20974 (-222)
23M → 24M
11:41 | 11:41/mi
40K· 24.85 mi
4:01:00
Rank: #21257 (-283)
24M → 40K
11:11 | 13:05/mi
25.2M
4:05:42
Rank: #21357 (-100)
40K → 25.2M
4:42 | 13:38/mi
Finish· 26.22 mi
4:16:24
Rank: #21449 (-92)
25.2M → Finish
10:42 | 10:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:23
Pace8:57 /mi
2nd Half
Distance13.11 mi
Time2:19:01
Pace10:36 /mi
📊Positive Split: 18.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:1928:419:1428:41
9:14
-
10K
6.21 mi12:15:2955:518:5927:10
8:45
-0:29
15K
9.32 mi12:42:571:23:198:5627:28
8:50
+0:05
20K
12.43 mi13:11:031:51:258:5828:06
9:03
+0:13
Half
13.11 mi13:17:011:57:238:575:58
8:45
-0:18
25K
15.53 mi13:38:432:19:058:5721:42
8:57
+0:12
30K
18.64 mi14:09:262:49:489:0730:43
9:53
+0:56
20M
20.00 mi14:23:103:03:329:1113:44
10:06
+0:13
21M
21.00 mi14:35:123:15:349:1912:02
12:02
+1:56
35K
21.75 mi14:43:213:23:439:228:09
10:54
-1:08
23M
23.00 mi14:57:463:38:089:2914:25
11:31
+0:37
24M
24.00 mi15:09:273:49:499:3511:41
11:41
+0:10
40K
24.85 mi15:20:384:01:009:4211:11
13:05
+1:24
25.2M
25.20 mi15:25:204:05:429:454:42
13:38
+0:33
Finish
26.22 mi15:36:024:16:249:4710:42
10:30
-3:08

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

8:45 /mi

Average Pace

9:47 /mi

Slowest Pace

13:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:05

54% of race

Time at Steady Pace

55:09

22% of race

Time at Slower Pace

1:02:10

24% of race

Average Pace: 9:47 /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 mi11:48:1928:419:1428:41
9:14
#21302
10K
6.21 mi12:15:2955:518:5927:10
8:45
#20599
15K
9.32 mi12:42:571:23:198:5627:28
8:50
#20294
20K
12.43 mi13:11:031:51:258:5828:06
9:03
#20186
Half
13.11 mi13:17:011:57:238:575:58
8:45
#20145
25K
15.53 mi13:38:432:19:058:5721:42
8:57
#19906
30K
18.64 mi14:09:262:49:489:0730:43
9:53
#20096
20M
20.00 mi14:23:103:03:329:1113:44
10:06
#20164
21M
21.00 mi14:35:123:15:349:1912:02
12:02
#20375
35K
21.75 mi14:43:213:23:439:228:09
10:54
#20521
23M
23.00 mi14:57:463:38:089:2914:25
11:31
#20752
24M
24.00 mi15:09:273:49:499:3511:41
11:41
#20974
40K
24.85 mi15:20:384:01:009:4211:11
13:05
#21257
25.2M
25.20 mi15:25:204:05:429:454:42
13:38
#21357
Finish
26.22 mi15:36:024:16:249:4710:42
10:30
#21449
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21302127551275519732(Top 74%)12191(Top 80%)12191(Top 231%)
10K6.21 mi3.10 mi20599+70312491+26412491+26419648(Top 74%)12149(Top 80%)12149(Top 230%)
15K9.32 mi3.11 mi20294+30512373+11812373+11819732(Top 74%)12191(Top 80%)12191(Top 231%)
20K12.43 mi3.11 mi20186+10812344+2912344+2919903(Top 75%)12262(Top 81%)12262(Top 232%)
Half13.11 mi0.68 mi20145+4112331+1312331+1319184(Top 72%)11981(Top 79%)11981(Top 227%)
25K15.53 mi2.42 mi19906+23912228+10312228+10318711(Top 70%)11725(Top 77%)11725(Top 222%)
30K18.64 mi3.11 mi20096-19012296-6812296-6820712(Top 78%)12516(Top 82%)12516(Top 237%)
20M20.00 mi1.36 mi20164-6812306-1012306-1020754(Top 78%)12454(Top 82%)12454(Top 236%)
21M21.00 mi1.00 mi20375-21112392-8612392-8622796(Top 86%)13335(Top 88%)13335(Top 252%)
35K21.75 mi0.75 mi20521-14612448-5612448-5623108(Top 87%)13434(Top 89%)13434(Top 254%)
23M23.00 mi1.25 mi20752-23112535-8712535-8723259(Top 87%)13507(Top 89%)13507(Top 256%)
24M24.00 mi1.00 mi20974-22212622-8712622-8724107(Top 91%)13870(Top 91%)13870(Top 262%)
40K24.85 mi0.85 mi21257-28312745-12312745-12324994(Top 94%)14297(Top 94%)14297(Top 271%)
25.2M25.20 mi0.35 mi21357-10012785-4012785-4024636(Top 93%)14103(Top 93%)14103(Top 267%)
Finish26.22 mi1.02 mi21449-9212815-3012815-3022984(Top 86%)13324(Top 88%)13324(Top 252%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

19732

Males

12191

M18-39

12191

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

19648

Males

12149

M18-39

12149

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

19732

Males

12191

M18-39

12191

15K→20K

9.3 - 12.4 mi

Top 75%
×5stories
+106ft-86ft

Overall

19903

Males

12262

M18-39

12262

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

19184

Males

11981

M18-39

11981

Half→25K

13.1 - 15.5 mi

Top 70%
×4stories
+66ft-88ft

Overall

18711

Males

11725

M18-39

11725

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

20712

Males

12516

M18-39

12516

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20754

Males

12454

M18-39

12454

20M→21M

20.0 - 21.0 mi

Top 86%
×8stories
+106ft-24ft

Overall

22796

Males

13335

M18-39

13335

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

23108

Males

13434

M18-39

13434

35K→23M

21.8 - 23.0 mi

Top 87%
×5stories
+23ft-63ft

Overall

23259

Males

13507

M18-39

13507

23M→24M

23.0 - 24.0 mi

Top 91%
×6stories
+12ft-82ft

Overall

24107

Males

13870

M18-39

13870

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

24994

Males

14297

M18-39

14297

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

24636

Males

14103

M18-39

14103

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2stories
+22ft-21ft

Overall

22984

Males

13324

M18-39

13324

Passing Analysis

Category:
Athletes Passed
1951
Passed By
2098
Net Change
-147
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21302
5K → 10K78279+703#21302#20599
10K → 15K35954+305#20599#20294
15K → 20K221113+108#20294#20186
20K → Half5514+41#20186#20145
Half → 25K26728+239#20145#19906
25K → 30K103293-190#19906#20096
30K → 20M67135-68#20096#20164
20M → 21M22233-211#20164#20375
21M → 35K16162-146#20375#20521
35K → 23M20251-231#20521#20752
23M → 24M12234-222#20752#20974
24M → 40K6289-283#20974#21257
40K → 25.2M4104-100#21257#21357
25.2M → Finish17109-92#21357#21449
TOTALS19512098-147
📊

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