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BOSTON MARATHON 2023

Todd Brown

Bib: 11880•M

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 24%
Gender (Male)
#0 / 15176
Top 38%
Masters (Masters Men)
#0 / 9891
Top 24%
Division (M50-54)
#0 / 2052
Top 18%
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
7:35/mi
23:34
↑ 97↓ 3451.5%
10K· 6.21 mi
7:15/mi
46:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:09/mi
1:08:19
↑ 67↓ 78
20K· 12.43 mi
7:11/mi
1:30:39
↑ 106↓ 860.1%
Half· 13.11 mi
7:05/mi
1:35:29
↑ 19↓ 370.5%
25K· 15.53 mi
7:11/mi
1:52:55
↑ 66↓ 880.2%
30K· 18.64 mi
7:22/mi
2:15:47
↑ 181↓ 1480.2%
20M
7:13/mi
2:25:36
↑ 64↓ 500.2%
21M
7:35/mi
2:33:11
↑ 106↓ 241.6%
35K· 21.75 mi
6:50/mi
2:38:18
↑ 17↓ 861.7%
23M
7:17/mi
2:47:25
↑ 23↓ 630.6%
24M
7:05/mi
2:54:30
↓ 821.3%
40K· 24.85 mi
7:09/mi
3:00:37
↓ 200.3%
25.2M
7:38/mi
3:03:15
↑ 13↓ 160.2%
Finish· 26.22 mi
6:53/mi
3:10:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:35:29
Pace7:17 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:34:47
Pace7:14 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5523:347:3523:34
7:35
-
10K
6.21 mi11:13:2746:067:2522:32
7:15
-0:20
15K
9.32 mi11:35:401:08:197:2022:13
7:09
-0:06
20K
12.43 mi11:58:001:30:397:1822:20
7:11
+0:02
Half
13.11 mi12:02:501:35:297:174:50
7:05
-0:06
25K
15.53 mi12:20:161:52:557:1617:26
7:11
+0:06
30K
18.64 mi12:43:082:15:477:1722:52
7:22
+0:11
20M
20.00 mi12:52:572:25:367:179:49
7:13
-0:09
21M
21.00 mi13:00:322:33:117:187:35
7:35
+0:22
35K
21.75 mi13:05:392:38:187:175:07
6:50
-0:45
23M
23.00 mi13:14:462:47:257:179:07
7:17
+0:27
24M
24.00 mi13:21:512:54:307:167:05
7:05
-0:12
40K
24.85 mi13:27:583:00:377:166:07
7:09
+0:04
25.2M
25.20 mi13:30:363:03:157:162:38
7:38
+0:29
Finish
26.22 mi13:37:373:10:167:167:01
6:53
-0:45

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

6:50 /mi

Average Pace

7:16 /mi

Slowest Pace

7:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:36:29

82% of race

Time at Steady Pace

33:47

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:15 /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 mi10:50:5523:347:3523:34
7:35
#10376
10K
6.21 mi11:13:2746:067:2522:32
7:15
#9325
15K
9.32 mi11:35:401:08:197:2022:13
7:09
#8681
20K
12.43 mi11:58:001:30:397:1822:20
7:11
#8199
Half
13.11 mi12:02:501:35:297:174:50
7:05
#8143
25K
15.53 mi12:20:161:52:557:1617:26
7:11
#7852
30K
18.64 mi12:43:082:15:477:1722:52
7:22
#7513
20M
20.00 mi12:52:572:25:367:179:49
7:13
#7308
21M
21.00 mi13:00:322:33:117:187:35
7:35
#7136
35K
21.75 mi13:05:392:38:187:175:07
6:50
#7012
23M
23.00 mi13:14:462:47:257:179:07
7:17
#6863
24M
24.00 mi13:21:512:54:307:167:05
7:05
#6759
40K
24.85 mi13:27:583:00:377:166:07
7:09
#6633
25.2M
25.20 mi13:30:363:03:157:162:38
7:38
#6582
Finish
26.22 mi13:37:373:10:167:167:01
6:53
#6481
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi10376833583357467(Top 28%)6574(Top 43%)6574(Top 320%)
10K6.21 mi3.10 mi9325+10517771+5647771+5648493(Top 32%)7252(Top 48%)7252(Top 353%)
15K9.32 mi3.11 mi8681+6447374+3977374+3977467(Top 28%)6574(Top 43%)6574(Top 320%)
20K12.43 mi3.11 mi8199+4827069+3057069+3057013(Top 26%)6219(Top 41%)6219(Top 303%)
Half13.11 mi0.68 mi8143+567032+377032+377020(Top 26%)6237(Top 41%)6237(Top 304%)
25K15.53 mi2.42 mi7852+2916815+2176815+2176621(Top 25%)5876(Top 39%)5876(Top 286%)
30K18.64 mi3.11 mi7513+3396562+2536562+2536367(Top 24%)5634(Top 37%)5634(Top 275%)
20M20.00 mi1.36 mi7308+2056416+1466416+1465249(Top 20%)4741(Top 31%)4741(Top 231%)
21M21.00 mi1.00 mi7136+1726290+1266290+1265010(Top 19%)4488(Top 30%)4488(Top 219%)
35K21.75 mi0.75 mi7012+1246194+966194+964476(Top 17%)4094(Top 27%)4094(Top 200%)
23M23.00 mi1.25 mi6863+1496063+1316063+1315221(Top 20%)4629(Top 31%)4629(Top 226%)
24M24.00 mi1.00 mi6759+1045969+945969+945113(Top 19%)4513(Top 30%)4513(Top 220%)
40K24.85 mi0.85 mi6633+1265858+1115858+1114651(Top 17%)4102(Top 27%)4102(Top 200%)
25.2M25.20 mi0.35 mi6582+515816+425816+424576(Top 17%)3989(Top 26%)3989(Top 194%)
Finish26.22 mi1.02 mi6481+1015733+835733+834553(Top 17%)3961(Top 26%)3961(Top 193%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7467

Males

6574

M50-54

6574

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8493

Males

7252

M50-54

7252

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7467

Males

6574

M50-54

6574

15K→20K

9.3 - 12.4 mi

Top 26%
×5story building
+106ft-86ft

Overall

7013

Males

6219

M50-54

6219

20K→Half

12.4 - 13.1 mi

Top 26%
×2story building
+19ft-37ft

Overall

7020

Males

6237

M50-54

6237

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

6621

Males

5876

M50-54

5876

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6367

Males

5634

M50-54

5634

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5249

Males

4741

M50-54

4741

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

5010

Males

4488

M50-54

4488

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4476

Males

4094

M50-54

4094

35K→23M

21.8 - 23.0 mi

Top 20%
×5story building
+23ft-63ft

Overall

5221

Males

4629

M50-54

4629

23M→24M

23.0 - 24.0 mi

Top 19%
×6story building
+12ft-82ft

Overall

5113

Males

4513

M50-54

4513

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4651

Males

4102

M50-54

4102

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4576

Males

3989

M50-54

3989

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2story building
+22ft-21ft

Overall

4553

Males

3961

M50-54

3961

Passing Analysis

Category:
Athletes Passed
4025*
Passed By
130
Net Change
+3895
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10376
5K → 10K1092*41+1051#10376#9325
10K → 15K6539+644#9325#8681
15K → 20K4831+482#8681#8199
20K → Half615+56#8199#8143
Half → 25K2965+291#8143#7852
25K → 30K35516+339#7852#7513
30K → 20M2072+205#7513#7308
20M → 21M1753+172#7308#7136
21M → 35K1262+124#7136#7012
35K → 23M16112+149#7012#6863
23M → 24M11814+104#6863#6759
24M → 40K1326+126#6759#6633
40K → 25.2M554+51#6633#6582
25.2M → Finish11110+101#6582#6481
TOTALS4025*130+3895

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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