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BOSTON MARATHON 2023

Thierry Dubois

Bib: 31754•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
9:08/mi
28:22
↑ 97↓ 3451.5%
10K· 6.21 mi
9:09/mi
56:48
↑ 79↓ 1380.4%
15K· 9.32 mi
9:16/mi
1:25:34
↑ 67↓ 78
20K· 12.43 mi
9:46/mi
1:55:54
↑ 106↓ 860.1%
Half· 13.11 mi
9:40/mi
2:02:30
↑ 19↓ 370.5%
25K· 15.53 mi
10:46/mi
2:28:37
↑ 66↓ 880.2%
30K· 18.64 mi
11:37/mi
3:04:42
↑ 181↓ 1480.2%
20M
12:42/mi
3:21:57
↑ 64↓ 500.2%
21M
15:15/mi
3:37:12
↑ 106↓ 241.6%
35K· 21.75 mi
11:18/mi
3:45:39
↑ 17↓ 861.7%
23M
11:07/mi
3:59:34
↑ 23↓ 630.6%
24M
11:35/mi
4:11:09
↓ 821.3%
40K· 24.85 mi
12:52/mi
4:22:09
↓ 200.3%
25.2M
13:15/mi
4:26:43
↑ 13↓ 160.2%
Finish· 26.22 mi
11:49/mi
4:38:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:02:30
Pace9:21 /mi
2nd Half
Distance13.11 mi
Time2:36:15
Pace11:55 /mi
📊Positive Split: 27.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:5428:229:0828:22
9:08
-
10K
6.21 mi12:17:2056:489:0828:26
9:09
+0:01
15K
9.32 mi12:46:061:25:349:1128:46
9:16
+0:07
20K
12.43 mi13:16:261:55:549:2030:20
9:46
+0:30
Half
13.11 mi13:23:022:02:309:216:36
9:40
-0:06
25K
15.53 mi13:49:092:28:379:3426:07
10:46
+1:06
30K
18.64 mi14:25:143:04:429:5436:05
11:37
+0:51
20M
20.00 mi14:42:293:21:5710:0617:15
12:42
+1:05
21M
21.00 mi14:57:443:37:1210:2115:15
15:15
+2:33
35K
21.75 mi15:06:113:45:3910:238:27
11:18
-3:57
23M
23.00 mi15:20:063:59:3410:2513:55
11:07
-0:11
24M
24.00 mi15:31:414:11:0910:2811:35
11:35
+0:28
40K
24.85 mi15:42:414:22:0910:3311:00
12:52
+1:17
25.2M
25.20 mi15:47:154:26:4310:354:34
13:15
+0:23
Finish
26.22 mi15:59:174:38:4510:3812:02
11:49
-1:26

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

9:08 /mi

Average Pace

10:38 /mi

Slowest Pace

15:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:30

44% of race

Time at Steady Pace

1:48:11

39% of race

Time at Slower Pace

48:04

17% of race

Average Pace: 10:38 /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 mi11:48:5428:229:0828:22
9:08
#20976
10K
6.21 mi12:17:2056:489:0828:26
9:09
#21215
15K
9.32 mi12:46:061:25:349:1128:46
9:16
#21294
20K
12.43 mi13:16:261:55:549:2030:20
9:46
#21592
Half
13.11 mi13:23:022:02:309:216:36
9:40
#21651
25K
15.53 mi13:49:092:28:379:3426:07
10:46
#22078
30K
18.64 mi14:25:143:04:429:5436:05
11:37
#22581
20M
20.00 mi14:42:293:21:5710:0617:15
12:42
#22847
21M
21.00 mi14:57:443:37:1210:2115:15
15:15
#23187
35K
21.75 mi15:06:113:45:3910:238:27
11:18
#23200
23M
23.00 mi15:20:063:59:3410:2513:55
11:07
#23182
24M
24.00 mi15:31:414:11:0910:2811:35
11:35
#23209
40K
24.85 mi15:42:414:22:0910:3311:00
12:52
#23320
25.2M
25.20 mi15:47:154:26:4310:354:34
13:15
#23339
Finish
26.22 mi15:59:174:38:4510:3812:02
11:49
#23436
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi20976125991259921504(Top 81%)12984(Top 86%)12984(Top 633%)
10K6.21 mi3.10 mi21215-23912767-16812767-16821475(Top 81%)12912(Top 85%)12912(Top 629%)
15K9.32 mi3.11 mi21294-7912836-6912836-6921504(Top 81%)12984(Top 86%)12984(Top 633%)
20K12.43 mi3.11 mi21592-29812965-12912965-12922320(Top 84%)13323(Top 88%)13323(Top 649%)
Half13.11 mi0.68 mi21651-5912993-2812993-2822582(Top 85%)13442(Top 89%)13442(Top 655%)
25K15.53 mi2.42 mi22078-42713188-19513188-19523614(Top 89%)13851(Top 91%)13851(Top 675%)
30K18.64 mi3.11 mi22581-50313381-19313381-19324021(Top 90%)13973(Top 92%)13973(Top 681%)
20M20.00 mi1.36 mi22847-26613509-12813509-12824908(Top 94%)14331(Top 94%)14331(Top 698%)
21M21.00 mi1.00 mi23187-34013663-15413663-15425867(Top 97%)14810(Top 98%)14810(Top 722%)
35K21.75 mi0.75 mi23200-1313662+113662+123790(Top 89%)13734(Top 90%)13734(Top 669%)
23M23.00 mi1.25 mi23182+1813648+1413648+1422568(Top 85%)13185(Top 87%)13185(Top 643%)
24M24.00 mi1.00 mi23209-2713652-413652-423976(Top 90%)13802(Top 91%)13802(Top 673%)
40K24.85 mi0.85 mi23320-11113692-4013692-4024817(Top 93%)14217(Top 94%)14217(Top 693%)
25.2M25.20 mi0.35 mi23339-1913695-313695-324234(Top 91%)13905(Top 92%)13905(Top 678%)
Finish26.22 mi1.02 mi23436-9713734-3913734-3925041(Top 94%)14328(Top 94%)14328(Top 698%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21story building
+97ft-345ft

Overall

21504

Males

12984

M50-54

12984

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

21475

Males

12912

M50-54

12912

10K→15K

6.2 - 9.3 mi

Top 81%
×3story building
+67ft-78ft

Overall

21504

Males

12984

M50-54

12984

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

22320

Males

13323

M50-54

13323

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

22582

Males

13442

M50-54

13442

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

23614

Males

13851

M50-54

13851

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

24021

Males

13973

M50-54

13973

30K→20M

18.6 - 20.0 mi

Top 94%
×5story building
+64ft-50ft

Overall

24908

Males

14331

M50-54

14331

20M→21M

20.0 - 21.0 mi

Top 97%
×8story building
+106ft-24ft

Overall

25867

Males

14810

M50-54

14810

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

23790

Males

13734

M50-54

13734

35K→23M

21.8 - 23.0 mi

Top 85%
×5story building
+23ft-63ft

Overall

22568

Males

13185

M50-54

13185

23M→24M

23.0 - 24.0 mi

Top 90%
×6story building
+12ft-82ft

Overall

23976

Males

13802

M50-54

13802

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

24817

Males

14217

M50-54

14217

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

24234

Males

13905

M50-54

13905

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

25041

Males

14328

M50-54

14328

Passing Analysis

Category:
Athletes Passed
569
Passed By
3029
Net Change
-2460
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20976
5K → 10K180419-239#20976#21215
10K → 15K128207-79#21215#21294
15K → 20K53351-298#21294#21592
20K → Half867-59#21592#21651
Half → 25K23450-427#21651#22078
25K → 30K29532-503#22078#22581
30K → 20M16282-266#22581#22847
20M → 21M1341-340#22847#23187
21M → 35K2336-13#23187#23200
35K → 23M4830+18#23200#23182
23M → 24M2249-27#23182#23209
24M → 40K15126-111#23209#23320
40K → 25.2M1433-19#23320#23339
25.2M → Finish9106-97#23339#23436
TOTALS5693029-2460
📊

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