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BOSTON MARATHON 2023

Brennan Fox

Bib: 5798•M

IL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 32%
Gender (Male)
#0 / 15176
Top 47%
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
21:23
Rank: #5442
Start → 5K
21:23 | 6:53/mi
10K· 6.21 mi
42:14
Rank: #4942 (+500)
5K → 10K
20:51 | 6:43/mi
15K· 9.32 mi
1:03:12
Rank: #4817 (+125)
10K → 15K
20:58 | 6:45/mi
20K· 12.43 mi
1:24:13
Rank: #4617 (+200)
15K → 20K
21:01 | 6:46/mi
Half· 13.11 mi
1:28:45
Rank: #4562 (+55)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:46:03
Rank: #4965 (-403)
Half → 25K
17:18 | 7:08/mi
30K· 18.64 mi
2:12:19
Rank: #6396 (-1431)
25K → 30K
26:16 | 8:27/mi
20M
2:24:00
Rank: #6834 (-438)
30K → 20M
11:41 | 8:36/mi
21M
2:33:26
Rank: #7226 (-392)
20M → 21M
9:26 | 9:26/mi
35K· 21.75 mi
2:39:42
Rank: #7468 (-242)
21M → 35K
6:16 | 8:23/mi
23M
2:50:33
Rank: #7809 (-341)
35K → 23M
10:51 | 8:40/mi
24M
2:58:30
Rank: #7927 (-118)
23M → 24M
7:57 | 7:57/mi
40K· 24.85 mi
3:06:07
Rank: #8221 (-294)
24M → 40K
7:37 | 8:54/mi
25.2M
3:09:33
Rank: #8376 (-155)
40K → 25.2M
3:26 | 9:57/mi
Finish· 26.22 mi
3:17:46
Rank: #8541 (-165)
25.2M → Finish
8:13 | 8:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:45
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:49:01
Pace8:19 /mi
📊Positive Split: 22.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2121:236:5321:23
6:53
-
10K
6.21 mi11:08:1242:146:4820:51
6:43
-0:10
15K
9.32 mi11:29:101:03:126:4720:58
6:45
+0:02
20K
12.43 mi11:50:111:24:136:4721:01
6:46
+0:01
Half
13.11 mi11:54:431:28:456:464:32
6:39
-0:07
25K
15.53 mi12:12:011:46:036:5017:18
7:08
+0:29
30K
18.64 mi12:38:172:12:197:0626:16
8:27
+1:19
20M
20.00 mi12:49:582:24:007:1211:41
8:36
+0:09
21M
21.00 mi12:59:242:33:267:189:26
9:26
+0:50
35K
21.75 mi13:05:402:39:427:216:16
8:23
-1:03
23M
23.00 mi13:16:312:50:337:2510:51
8:40
+0:17
24M
24.00 mi13:24:282:58:307:267:57
7:57
-0:43
40K
24.85 mi13:32:053:06:077:297:37
8:54
+0:57
25.2M
25.20 mi13:35:313:09:337:313:26
9:57
+1:03
Finish
26.22 mi13:43:443:17:467:338:13
8:04
-1:53

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

6:39 /mi

Average Pace

7:33 /mi

Slowest Pace

9:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:03

54% of race

Time at Steady Pace

48:42

25% of race

Time at Slower Pace

43:01

22% of race

Average Pace: 7:33 /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 mi10:47:2121:236:5321:23
6:53
#5442
10K
6.21 mi11:08:1242:146:4820:51
6:43
#4942
15K
9.32 mi11:29:101:03:126:4720:58
6:45
#4817
20K
12.43 mi11:50:111:24:136:4721:01
6:46
#4617
Half
13.11 mi11:54:431:28:456:464:32
6:39
#4562
25K
15.53 mi12:12:011:46:036:5017:18
7:08
#4965
30K
18.64 mi12:38:172:12:197:0626:16
8:27
#6396
20M
20.00 mi12:49:582:24:007:1211:41
8:36
#6834
21M
21.00 mi12:59:242:33:267:189:26
9:26
#7226
35K
21.75 mi13:05:402:39:427:216:16
8:23
#7468
23M
23.00 mi13:16:312:50:337:2510:51
8:40
#7809
24M
24.00 mi13:24:282:58:307:267:57
7:57
#7927
40K
24.85 mi13:32:053:06:077:297:37
8:54
#8221
25.2M
25.20 mi13:35:313:09:337:313:26
9:57
#8376
Finish
26.22 mi13:43:443:17:467:338:13
8:04
#8541
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5442502750274616(Top 17%)4312(Top 28%)4312(Top 82%)
10K6.21 mi3.10 mi4942+5004586+4414586+4414463(Top 17%)4174(Top 28%)4174(Top 79%)
15K9.32 mi3.11 mi4817+1254481+1054481+1054616(Top 17%)4312(Top 28%)4312(Top 82%)
20K12.43 mi3.11 mi4617+2004307+1744307+1744142(Top 16%)3886(Top 26%)3886(Top 74%)
Half13.11 mi0.68 mi4562+554257+504257+503897(Top 15%)3681(Top 24%)3681(Top 70%)
25K15.53 mi2.42 mi4965-4034616-3594616-3596315(Top 24%)5663(Top 37%)5663(Top 107%)
30K18.64 mi3.11 mi6396-14315766-11505766-115013999(Top 53%)9648(Top 64%)9648(Top 183%)
20M20.00 mi1.36 mi6834-4386078-3126078-31214213(Top 53%)9643(Top 64%)9643(Top 182%)
21M21.00 mi1.00 mi7226-3926349-2716349-27115609(Top 59%)10170(Top 67%)10170(Top 192%)
35K21.75 mi0.75 mi7468-2426481-1326481-13214520(Top 55%)9638(Top 64%)9638(Top 182%)
23M23.00 mi1.25 mi7809-3416684-2036684-20314132(Top 53%)9412(Top 62%)9412(Top 178%)
24M24.00 mi1.00 mi7927-1186739-556739-5510847(Top 41%)7820(Top 52%)7820(Top 148%)
40K24.85 mi0.85 mi8221-2946904-1656904-16515621(Top 59%)9947(Top 66%)9947(Top 188%)
25.2M25.20 mi0.35 mi8376-1556990-866990-8617125(Top 64%)10594(Top 70%)10594(Top 200%)
Finish26.22 mi1.02 mi8541-1657075-857075-8512510(Top 47%)8517(Top 56%)8517(Top 161%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4616

Males

4312

M18-39

4312

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4463

Males

4174

M18-39

4174

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4616

Males

4312

M18-39

4312

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4142

Males

3886

M18-39

3886

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

3897

Males

3681

M18-39

3681

Half→25K

13.1 - 15.5 mi

Top 24%
×4stories
+66ft-88ft

Overall

6315

Males

5663

M18-39

5663

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

13999

Males

9648

M18-39

9648

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

14213

Males

9643

M18-39

9643

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

15609

Males

10170

M18-39

10170

21M→35K

21.0 - 21.8 mi

Top 55%
×7stories
+17ft-86ft

Overall

14520

Males

9638

M18-39

9638

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

14132

Males

9412

M18-39

9412

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

10847

Males

7820

M18-39

7820

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15621

Males

9947

M18-39

9947

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

17125

Males

10594

M18-39

10594

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

12510

Males

8517

M18-39

8517

Passing Analysis

Category:
Athletes Passed
1166
Passed By
4265
Net Change
-3099
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5442
5K → 10K54343+500#5442#4942
10K → 15K18358+125#4942#4817
15K → 20K22525+200#4817#4617
20K → Half550+55#4617#4562
Half → 25K30433-403#4562#4965
25K → 30K51436-1431#4965#6396
30K → 20M5443-438#6396#6834
20M → 21M9401-392#6834#7226
21M → 35K11253-242#7226#7468
35K → 23M21362-341#7468#7809
23M → 24M37155-118#7809#7927
24M → 40K14308-294#7927#8221
40K → 25.2M2157-155#8221#8376
25.2M → Finish26191-165#8376#8541
TOTALS11664265-3099
📊

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