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BOSTON MARATHON 2023

Robert Fox

Bib: 25256•M

RI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 32%
Gender (Male)
#0 / 15176
Top 46%
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
6:50/mi
21:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:00/mi
43:01
↑ 79↓ 1380.4%
15K· 9.32 mi
7:07/mi
1:05:08
↑ 67↓ 78
20K· 12.43 mi
7:14/mi
1:27:37
↑ 106↓ 860.1%
Half· 13.11 mi
7:15/mi
1:32:34
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:50:38
↑ 66↓ 880.2%
30K· 18.64 mi
7:46/mi
2:14:47
↑ 181↓ 1480.2%
20M
7:57/mi
2:25:35
↑ 64↓ 500.2%
21M
8:43/mi
2:34:18
↑ 106↓ 241.6%
35K· 21.75 mi
7:29/mi
2:39:54
↑ 17↓ 861.7%
23M
8:10/mi
2:50:07
↑ 23↓ 630.6%
24M
8:03/mi
2:58:10
↓ 821.3%
40K· 24.85 mi
8:38/mi
3:05:33
↓ 200.3%
25.2M
9:11/mi
3:08:43
↑ 13↓ 160.2%
Finish· 26.22 mi
8:34/mi
3:17:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:34
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:44:53
Pace8:00 /mi
📊Positive Split: 13.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:37:1421:156:5021:15
6:50
-
10K
6.21 mi11:59:0043:016:5521:46
7:00
+0:10
15K
9.32 mi12:21:071:05:086:5922:07
7:07
+0:07
20K
12.43 mi12:43:361:27:377:0322:29
7:14
+0:07
Half
13.11 mi12:48:331:32:347:044:57
7:15
+0:01
25K
15.53 mi13:06:371:50:387:0718:04
7:27
+0:12
30K
18.64 mi13:30:462:14:477:1424:09
7:46
+0:19
20M
20.00 mi13:41:342:25:357:1710:48
7:57
+0:11
21M
21.00 mi13:50:172:34:187:218:43
8:43
+0:46
35K
21.75 mi13:55:532:39:547:215:36
7:29
-1:14
23M
23.00 mi14:06:062:50:077:2410:13
8:10
+0:41
24M
24.00 mi14:14:092:58:107:258:03
8:03
-0:07
40K
24.85 mi14:21:323:05:337:287:23
8:38
+0:35
25.2M
25.20 mi14:24:423:08:437:293:10
9:11
+0:33
Finish
26.22 mi14:33:263:17:277:328:44
8:34
-0:37

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

6:50 /mi

Average Pace

7:32 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:34

47% of race

Time at Steady Pace

1:06:40

34% of race

Time at Slower Pace

38:13

19% of race

Average Pace: 7:32 /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 mi11:37:1421:156:5021:15
6:50
#5067
10K
6.21 mi11:59:0043:016:5521:46
7:00
#6005
15K
9.32 mi12:21:071:05:086:5922:07
7:07
#6433
20K
12.43 mi12:43:361:27:377:0322:29
7:14
#6641
Half
13.11 mi12:48:331:32:347:044:57
7:15
#6713
25K
15.53 mi13:06:371:50:387:0718:04
7:27
#6910
30K
18.64 mi13:30:462:14:477:1424:09
7:46
#7163
20M
20.00 mi13:41:342:25:357:1710:48
7:57
#7305
21M
21.00 mi13:50:172:34:187:218:43
8:43
#7516
35K
21.75 mi13:55:532:39:547:215:36
7:29
#7516
23M
23.00 mi14:06:062:50:077:2410:13
8:10
#7662
24M
24.00 mi14:14:092:58:107:258:03
8:03
#7815
40K
24.85 mi14:21:323:05:337:287:23
8:38
#8041
25.2M
25.20 mi14:24:423:08:437:293:10
9:11
#8139
Finish
26.22 mi14:33:263:17:277:328:44
8:34
#8445
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5067470247027262(Top 27%)6433(Top 42%)6433(Top 122%)
10K6.21 mi3.10 mi6005-9385492-7905492-7906858(Top 26%)6133(Top 40%)6133(Top 116%)
15K9.32 mi3.11 mi6433-4285815-3235815-3237262(Top 27%)6433(Top 42%)6433(Top 122%)
20K12.43 mi3.11 mi6641-2085967-1525967-1527335(Top 28%)6451(Top 43%)6451(Top 122%)
Half13.11 mi0.68 mi6713-726029-626029-628234(Top 31%)7048(Top 46%)7048(Top 133%)
25K15.53 mi2.42 mi6910-1976174-1456174-1458409(Top 32%)7070(Top 47%)7070(Top 134%)
30K18.64 mi3.11 mi7163-2536339-1656339-1659144(Top 34%)7356(Top 48%)7356(Top 139%)
20M20.00 mi1.36 mi7305-1426413-746413-749850(Top 37%)7661(Top 50%)7661(Top 145%)
21M21.00 mi1.00 mi7516-2116526-1136526-11311726(Top 44%)8442(Top 56%)8442(Top 160%)
35K21.75 mi0.75 mi75166515+116515+118417(Top 32%)6748(Top 44%)6748(Top 128%)
23M23.00 mi1.25 mi7662-1466598-836598-8310866(Top 41%)7891(Top 52%)7891(Top 149%)
24M24.00 mi1.00 mi7815-1536667-696667-6911542(Top 43%)8165(Top 54%)8165(Top 154%)
40K24.85 mi0.85 mi8041-2266793-1266793-12614118(Top 53%)9276(Top 61%)9276(Top 176%)
25.2M25.20 mi0.35 mi8139-986844-516844-5113447(Top 51%)8940(Top 59%)8940(Top 169%)
Finish26.22 mi1.02 mi8445-3067016-1727016-17215784(Top 59%)10068(Top 66%)10068(Top 191%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21story building
+97ft-345ft

Overall

7262

Males

6433

M18-39

6433

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

6858

Males

6133

M18-39

6133

10K→15K

6.2 - 9.3 mi

Top 27%
×3story building
+67ft-78ft

Overall

7262

Males

6433

M18-39

6433

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7335

Males

6451

M18-39

6451

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8234

Males

7048

M18-39

7048

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8409

Males

7070

M18-39

7070

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9144

Males

7356

M18-39

7356

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

9850

Males

7661

M18-39

7661

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11726

Males

8442

M18-39

8442

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

8417

Males

6748

M18-39

6748

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

10866

Males

7891

M18-39

7891

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

11542

Males

8165

M18-39

8165

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14118

Males

9276

M18-39

9276

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13447

Males

8940

M18-39

8940

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15784

Males

10068

M18-39

10068

Passing Analysis

Category:
Athletes Passed
388
Passed By
3766
Net Change
-3378
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5067
5K → 10K21959-938#5067#6005
10K → 15K22450-428#6005#6433
15K → 20K53261-208#6433#6641
20K → Half476-72#6641#6713
Half → 25K36233-197#6713#6910
25K → 30K54307-253#6910#7163
30K → 20M26168-142#7163#7305
20M → 21M25236-211#7305#7516
21M → 35K33330#7516#7516
35K → 23M43189-146#7516#7662
23M → 24M35188-153#7662#7815
24M → 40K17243-226#7815#8041
40K → 25.2M9107-98#8041#8139
25.2M → Finish10316-306#8139#8445
TOTALS3883766-3378
📊

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