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BOSTON MARATHON 2023

Thomas Cahill

Bib: 26185•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

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
9:32/mi
29:36
↑ 97↓ 3451.5%
10K· 6.21 mi
9:12/mi
58:10
↑ 79↓ 1380.4%
15K· 9.32 mi
8:49/mi
1:25:33
↑ 67↓ 78
20K· 12.43 mi
8:58/mi
1:53:24
↑ 106↓ 860.1%
Half· 13.11 mi
8:56/mi
1:59:30
↑ 19↓ 370.5%
25K· 15.53 mi
9:32/mi
2:22:36
↑ 66↓ 880.2%
30K· 18.64 mi
9:46/mi
2:52:58
↑ 181↓ 1480.2%
20M
10:57/mi
3:07:51
↑ 64↓ 500.2%
21M
10:04/mi
3:17:55
↑ 106↓ 241.6%
35K· 21.75 mi
9:13/mi
3:24:49
↑ 17↓ 861.7%
23M
9:58/mi
3:37:18
↑ 23↓ 630.6%
24M
9:19/mi
3:46:37
↓ 821.3%
40K· 24.85 mi
9:21/mi
3:54:37
↓ 200.3%
25.2M
10:38/mi
3:58:17
↑ 13↓ 160.2%
Finish· 26.22 mi
9:01/mi
4:07:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:30
Pace9:07 /mi
2nd Half
Distance13.11 mi
Time2:07:58
Pace9:46 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:0629:369:3229:36
9:32
-
10K
6.21 mi12:14:4058:109:2228:34
9:12
-0:20
15K
9.32 mi12:42:031:25:339:1127:23
8:49
-0:23
20K
12.43 mi13:09:541:53:249:0727:51
8:58
+0:09
Half
13.11 mi13:16:001:59:309:076:06
8:56
-0:02
25K
15.53 mi13:39:062:22:369:1123:06
9:32
+0:36
30K
18.64 mi14:09:282:52:589:1730:22
9:46
+0:14
20M
20.00 mi14:24:213:07:519:2414:53
10:57
+1:11
21M
21.00 mi14:34:253:17:559:2510:04
10:04
-0:53
35K
21.75 mi14:41:193:24:499:256:54
9:13
-0:51
23M
23.00 mi14:53:483:37:189:2712:29
9:58
+0:45
24M
24.00 mi15:03:073:46:379:279:19
9:19
-0:39
40K
24.85 mi15:11:073:54:379:268:00
9:21
+0:02
25.2M
25.20 mi15:14:473:58:179:273:40
10:38
+1:17
Finish
26.22 mi15:23:584:07:289:279:11
9:01
-1:37

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

8:49 /mi

Average Pace

9:27 /mi

Slowest Pace

10:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:10:31

28% of race

Time at Steady Pace

1:45:29

43% of race

Time at Slower Pace

1:11:28

29% of race

Average Pace: 9:26 /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 mi11:46:0629:369:3229:36
9:32
#22167
10K
6.21 mi12:14:4058:109:2228:34
9:12
#21919
15K
9.32 mi12:42:031:25:339:1127:23
8:49
#21288
20K
12.43 mi13:09:541:53:249:0727:51
8:58
#20889
Half
13.11 mi13:16:001:59:309:076:06
8:56
#20842
25K
15.53 mi13:39:062:22:369:1123:06
9:32
#20858
30K
18.64 mi14:09:282:52:589:1730:22
9:46
#20743
20M
20.00 mi14:24:213:07:519:2414:53
10:57
#20926
21M
21.00 mi14:34:253:17:559:2510:04
10:04
#20772
35K
21.75 mi14:41:193:24:499:256:54
9:13
#20686
23M
23.00 mi14:53:483:37:189:2712:29
9:58
#20613
24M
24.00 mi15:03:073:46:379:279:19
9:19
#20523
40K
24.85 mi15:11:073:54:379:268:00
9:21
#20421
25.2M
25.20 mi15:14:473:58:179:273:40
10:38
#20400
Finish
26.22 mi15:23:584:07:289:279:11
9:01
#20332
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22167131841318419593(Top 74%)12133(Top 80%)12133(Top 230%)
10K6.21 mi3.10 mi21919+24813091+9313091+9321597(Top 81%)12976(Top 86%)12976(Top 246%)
15K9.32 mi3.11 mi21288+63112833+25812833+25819593(Top 74%)12133(Top 80%)12133(Top 230%)
20K12.43 mi3.11 mi20889+39912655+17812655+17819525(Top 73%)12112(Top 80%)12112(Top 229%)
Half13.11 mi0.68 mi20842+4712637+1812637+1820151(Top 76%)12378(Top 82%)12378(Top 234%)
25K15.53 mi2.42 mi20858-1612655-1812655-1820906(Top 79%)12665(Top 83%)12665(Top 240%)
30K18.64 mi3.11 mi20743+11512594+6112594+6120375(Top 77%)12370(Top 82%)12370(Top 234%)
20M20.00 mi1.36 mi20926-18312652-5812652-5822618(Top 85%)13283(Top 88%)13283(Top 251%)
21M21.00 mi1.00 mi20772+15412580+7212580+7218261(Top 69%)11341(Top 75%)11341(Top 215%)
35K21.75 mi0.75 mi20686+8612529+5112529+5118832(Top 71%)11519(Top 76%)11519(Top 218%)
23M23.00 mi1.25 mi20613+7312480+4912480+4919905(Top 75%)11981(Top 79%)11981(Top 227%)
24M24.00 mi1.00 mi20523+9012427+5312427+5318519(Top 70%)11325(Top 75%)11325(Top 214%)
40K24.85 mi0.85 mi20421+10212379+4812379+4817776(Top 67%)10935(Top 72%)10935(Top 207%)
25.2M25.20 mi0.35 mi20400+2112361+1812361+1819484(Top 73%)11692(Top 77%)11692(Top 221%)
Finish26.22 mi1.02 mi20332+6812325+3612325+3618033(Top 68%)11093(Top 73%)11093(Top 210%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

19593

Males

12133

M18-39

12133

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

21597

Males

12976

M18-39

12976

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

19593

Males

12133

M18-39

12133

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19525

Males

12112

M18-39

12112

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

20151

Males

12378

M18-39

12378

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

20906

Males

12665

M18-39

12665

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

20375

Males

12370

M18-39

12370

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

22618

Males

13283

M18-39

13283

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18261

Males

11341

M18-39

11341

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

18832

Males

11519

M18-39

11519

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19905

Males

11981

M18-39

11981

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18519

Males

11325

M18-39

11325

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17776

Males

10935

M18-39

10935

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19484

Males

11692

M18-39

11692

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

18033

Males

11093

M18-39

11093

Passing Analysis

Category:
Athletes Passed
2520
Passed By
685
Net Change
+1835
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22167
5K → 10K396148+248#22167#21919
10K → 15K64413+631#21919#21288
15K → 20K41718+399#21288#20889
20K → Half6316+47#20889#20842
Half → 25K91107-16#20842#20858
25K → 30K20287+115#20858#20743
30K → 20M30213-183#20743#20926
20M → 21M1606+154#20926#20772
21M → 35K904+86#20772#20686
35K → 23M10128+73#20686#20613
23M → 24M10111+90#20613#20523
24M → 40K1119+102#20523#20421
40K → 25.2M3110+21#20421#20400
25.2M → Finish8315+68#20400#20332
TOTALS2520685+1835
📊

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