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BOSTON MARATHON 2023

Casey Gum

Bib: 10285•M

TX

Masters
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0:00
0:00
/ mi
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Overall
#0 / 26622
Top 29%
Gender (Male)
#0 / 15176
Top 44%
Masters (Masters Men)
#0 / 9891
Top 31%
Age Group (M45-49)
#0 / 2252
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
23:37
Rank: #10535
Start → 5K
23:37 | 7:36/mi
10K· 6.21 mi
46:04
Rank: #9277 (+1258)
5K → 10K
22:27 | 7:14/mi
15K· 9.32 mi
1:08:30
Rank: #8826 (+451)
10K → 15K
22:26 | 7:13/mi
20K· 12.43 mi
1:31:36
Rank: #8768 (+58)
15K → 20K
23:06 | 7:26/mi
Half· 13.11 mi
1:36:40
Rank: #8805 (-37)
20K → Half
5:04 | 7:26/mi
25K· 15.53 mi
1:54:39
Rank: #8681 (+124)
Half → 25K
17:59 | 7:25/mi
30K· 18.64 mi
2:18:11
Rank: #8455 (+226)
25K → 30K
23:32 | 7:34/mi
20M
2:28:35
Rank: #8384 (+71)
30K → 20M
10:24 | 7:39/mi
21M
2:37:20
Rank: #8577 (-193)
20M → 21M
8:45 | 8:45/mi
35K· 21.75 mi
2:42:42
Rank: #8487 (+90)
21M → 35K
5:22 | 7:10/mi
23M
2:52:08
Rank: #8343 (+144)
35K → 23M
9:26 | 7:32/mi
24M
2:59:20
Rank: #8176 (+167)
23M → 24M
7:12 | 7:12/mi
40K· 24.85 mi
3:05:28
Rank: #7993 (+183)
24M → 40K
6:08 | 7:10/mi
25.2M
3:08:06
Rank: #7931 (+62)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
3:15:11
Rank: #7786 (+145)
25.2M → Finish
7:05 | 6:57/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:36:40
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:38:31
Pace7:31 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:1723:377:3623:37
7:36
-
10K
6.21 mi11:12:4446:047:2522:27
7:14
-0:22
15K
9.32 mi11:35:101:08:307:2122:26
7:13
-0:01
20K
12.43 mi11:58:161:31:367:2223:06
7:26
+0:13
Half
13.11 mi12:03:201:36:407:225:04
7:26
0:00
25K
15.53 mi12:21:191:54:397:2317:59
7:25
-0:01
30K
18.64 mi12:44:512:18:117:2523:32
7:34
+0:09
20M
20.00 mi12:55:152:28:357:2610:24
7:39
+0:05
21M
21.00 mi13:04:002:37:207:308:45
8:45
+1:06
35K
21.75 mi13:09:222:42:427:295:22
7:10
-1:35
23M
23.00 mi13:18:482:52:087:299:26
7:32
+0:22
24M
24.00 mi13:26:002:59:207:287:12
7:12
-0:20
40K
24.85 mi13:32:083:05:287:286:08
7:10
-0:02
25.2M
25.20 mi13:34:463:08:067:282:38
7:38
+0:28
Finish
26.22 mi13:41:513:15:117:277:05
6:57
-0:41

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

6:57 /mi

Average Pace

7:27 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:10:40

36% of race

Time at Steady Pace

1:42:44

53% of race

Time at Slower Pace

21:47

11% of race

Average Pace: 7:27 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:50:1723:377:3623:37
7:36
#10535
10K
6.21 mi11:12:4446:047:2522:27
7:14
#9277
15K
9.32 mi11:35:101:08:307:2122:26
7:13
#8826
20K
12.43 mi11:58:161:31:367:2223:06
7:26
#8768
Half
13.11 mi12:03:201:36:407:225:04
7:26
#8805
25K
15.53 mi12:21:191:54:397:2317:59
7:25
#8681
30K
18.64 mi12:44:512:18:117:2523:32
7:34
#8455
20M
20.00 mi12:55:152:28:357:2610:24
7:39
#8384
21M
21.00 mi13:04:002:37:207:308:45
8:45
#8577
35K
21.75 mi13:09:222:42:427:295:22
7:10
#8487
23M
23.00 mi13:18:482:52:087:299:26
7:32
#8343
24M
24.00 mi13:26:002:59:207:287:12
7:12
#8176
40K
24.85 mi13:32:083:05:287:286:08
7:10
#7993
25.2M
25.20 mi13:34:463:08:067:282:38
7:38
#7931
Finish
26.22 mi13:41:513:15:117:277:05
6:57
#7786
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10535841784177932(Top 30%)6877(Top 45%)6877(Top 305%)
10K6.21 mi3.10 mi9277+12587737+6807737+6808291(Top 31%)7139(Top 47%)7139(Top 317%)
15K9.32 mi3.11 mi8826+4517456+2817456+2817932(Top 30%)6877(Top 45%)6877(Top 305%)
20K12.43 mi3.11 mi8768+587419+377419+378769(Top 33%)7352(Top 48%)7352(Top 326%)
Half13.11 mi0.68 mi8805-377432-137432-139723(Top 37%)7918(Top 52%)7918(Top 352%)
25K15.53 mi2.42 mi8681+1247345+877345+878149(Top 31%)6900(Top 45%)6900(Top 306%)
30K18.64 mi3.11 mi8455+2267159+1867159+1867748(Top 29%)6540(Top 43%)6540(Top 290%)
20M20.00 mi1.36 mi8384+717092+677092+677819(Top 29%)6479(Top 43%)6479(Top 288%)
21M21.00 mi1.00 mi8577-1937204-1127204-11211924(Top 45%)8541(Top 56%)8541(Top 379%)
35K21.75 mi0.75 mi8487+907132+727132+726370(Top 24%)5498(Top 36%)5498(Top 244%)
23M23.00 mi1.25 mi8343+1447024+1087024+1086624(Top 25%)5591(Top 37%)5591(Top 248%)
24M24.00 mi1.00 mi8176+1676896+1286896+1285756(Top 22%)4949(Top 33%)4949(Top 220%)
40K24.85 mi0.85 mi7993+1836763+1336763+1334762(Top 18%)4189(Top 28%)4189(Top 186%)
25.2M25.20 mi0.35 mi7931+626713+506713+504597(Top 17%)4010(Top 26%)4010(Top 178%)
Finish26.22 mi1.02 mi7786+1456606+1076606+1074933(Top 19%)4230(Top 28%)4230(Top 188%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21stories
+97ft-345ft

Overall

7932

Males

6877

M45-49

6877

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8291

Males

7139

M45-49

7139

10K→15K

6.2 - 9.3 mi

Top 30%
×3stories
+67ft-78ft

Overall

7932

Males

6877

M45-49

6877

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

8769

Males

7352

M45-49

7352

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9723

Males

7918

M45-49

7918

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8149

Males

6900

M45-49

6900

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

7748

Males

6540

M45-49

6540

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

7819

Males

6479

M45-49

6479

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

11924

Males

8541

M45-49

8541

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6370

Males

5498

M45-49

5498

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

6624

Males

5591

M45-49

5591

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5756

Males

4949

M45-49

4949

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4762

Males

4189

M45-49

4189

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4597

Males

4010

M45-49

4010

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

4933

Males

4230

M45-49

4230

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3345*
Passed By
596
Net Change
+2749
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10535
5K → 10K1284*26+1258#10535#9277
10K → 15K47019+451#9277#8826
15K → 20K15496+58#8826#8768
20K → Half1249-37#8768#8805
Half → 25K16844+124#8805#8681
25K → 30K28256+226#8681#8455
30K → 20M11342+71#8455#8384
20M → 21M33226-193#8384#8577
21M → 35K944+90#8577#8487
35K → 23M16016+144#8487#8343
23M → 24M1692+167#8343#8176
24M → 40K1874+183#8176#7993
40K → 25.2M686+62#7993#7931
25.2M → Finish1516+145#7931#7786
TOTALS3345*596+2749

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

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing