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BOSTON MARATHON 2023

Eric Robinson

AR

Bib: 12125 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 26%
Gender (Male)
#0 / 15176
Top 40%
Masters (Masters Men)
#0 / 9891
Top 26%
Division (M45-49)
#0 / 2252
Top 35%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:41/mi
23:53
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:29/mi
47:09
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:25/mi
1:10:12
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:28/mi
1:33:23
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:15/mi
1:38:20
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:19/mi
1:56:05
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:26/mi
2:19:11
↑ 181↓ 1480.2%
138 ft elev
20M
7:24/mi
2:29:15
↑ 64↓ 500.2%
148 ft elev
21M
7:40/mi
2:36:55
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
6:50/mi
2:42:02
↑ 17↓ 861.7%
156 ft elev
23M
6:58/mi
2:50:45
↑ 23↓ 630.6%
116 ft elev
24M
6:45/mi
2:57:30
↓ 821.3%
34 ft elev
40K· 24.85 mi
6:40/mi
3:03:12
↓ 200.3%
20 ft elev
25.2M
7:15/mi
3:05:42
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:34/mi
3:12:23
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:38:207:30 /mi+4.4%
2nd Half
1:34:037:10 /mi✓ faster
Negative split — 4.4% faster in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2923:537:4123:53
7:41
-
10K
6.21 mi11:14:4547:097:3523:16
7:29
-0:12
15K
9.32 mi11:37:481:10:127:3223:03
7:25
-0:04
20K
12.43 mi12:00:591:33:237:3123:11
7:28
+0:03
Half
13.11 mi12:05:561:38:207:304:57
7:15
-0:13
25K
15.53 mi12:23:411:56:057:2817:45
7:19
+0:04
30K
18.64 mi12:46:472:19:117:2823:06
7:26
+0:07
20M
20.00 mi12:56:512:29:157:2810:04
7:24
-0:02
21M
21.00 mi13:04:312:36:557:287:40
7:40
+0:16
35K
21.75 mi13:09:382:42:027:275:07
6:50
-0:50
23M
23.00 mi13:18:212:50:457:258:43
6:58
+0:08
24M
24.00 mi13:25:062:57:307:246:45
6:45
-0:13
40K
24.85 mi13:30:483:03:127:225:42
6:40
-0:05
25.2M
25.20 mi13:33:183:05:427:222:30
7:15
+0:35
Finish
26.22 mi13:39:593:12:237:216:41
6:34
-0:41

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

6:34 /mi

Average Pace

7:21 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

32:58

17% of race

Time at Steady Pace

2:39:25

83% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:20 /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 mi10:51:2923:537:4123:53
7:41
#11315
10K
6.21 mi11:14:4547:097:3523:16
7:29
#10800
15K
9.32 mi11:37:481:10:127:3223:03
7:25
#10331
20K
12.43 mi12:00:591:33:237:3123:11
7:28
#9951
Half
13.11 mi12:05:561:38:207:304:57
7:15
#9849
25K
15.53 mi12:23:411:56:057:2817:45
7:19
#9409
30K
18.64 mi12:46:472:19:117:2823:06
7:26
#8881
20M
20.00 mi12:56:512:29:157:2810:04
7:24
#8650
21M
21.00 mi13:04:312:36:557:287:40
7:40
#8441
35K
21.75 mi13:09:382:42:027:275:07
6:50
#8249
23M
23.00 mi13:18:212:50:457:258:43
6:58
#7876
24M
24.00 mi13:25:062:57:307:246:45
6:45
#7600
40K
24.85 mi13:30:483:03:127:225:42
6:40
#7333
25.2M
25.20 mi13:33:183:05:427:222:30
7:15
#7236
Finish
26.22 mi13:39:593:12:237:216:41
6:34
#6984
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi1131587988798948378527852
10K6.21 mi3.10 mi10800+5158557+2418557+2411033883448344
15K9.32 mi3.11 mi10331+4698344+2138344+213948378527852
20K12.43 mi3.11 mi9951+3808120+2248120+224899474967496
Half13.11 mi0.68 mi9849+1028065+558065+55819070047004
25K15.53 mi2.42 mi9409+4407781+2847781+284740964216421
30K18.64 mi3.11 mi8881+5287430+3517430+351679959305930
20M20.00 mi1.36 mi8650+2317268+1627268+162622954705470
21M21.00 mi1.00 mi8441+2097115+1537115+153545548084808
35K21.75 mi0.75 mi8249+1926982+1336982+133448040984098
23M23.00 mi1.25 mi7876+3736728+2546728+254360133403340
24M24.00 mi1.00 mi7600+2766536+1926536+192341131483148
40K24.85 mi0.85 mi7333+2676340+1966340+196222220732073
25.2M25.20 mi0.35 mi7236+976267+736267+73279125772577
Finish26.22 mi1.02 mi6984+2526071+1966071+196279025482548

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9483

Males

7852

M45-49

7852

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

10338

Males

8344

M45-49

8344

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9483

Males

7852

M45-49

7852

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

8994

Males

7496

M45-49

7496

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8190

Males

7004

M45-49

7004

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7409

Males

6421

M45-49

6421

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

6799

Males

5930

M45-49

5930

30K→20M

18.6 - 20.0 mi

Top 23%
×5story building
+64ft-50ft

Overall

6229

Males

5470

M45-49

5470

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5455

Males

4808

M45-49

4808

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4480

Males

4098

M45-49

4098

35K→23M

21.8 - 23.0 mi

Top 14%
×5story building
+23ft-63ft

Overall

3601

Males

3340

M45-49

3340

23M→24M

23.0 - 24.0 mi

Top 13%
×6story building
+12ft-82ft

Overall

3411

Males

3148

M45-49

3148

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2222

Males

2073

M45-49

2073

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2791

Males

2577

M45-49

2577

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2790

Males

2548

M45-49

2548

Passing Analysis

Category:
Athletes Passed
4537*
Passed By
206
Net Change
+4331
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11315
5K → 10K634119+515#11315#10800
10K → 15K50940+469#10800#10331
15K → 20K408*28+380#10331#9951
20K → Half1031+102#9951#9849
Half → 25K4411+440#9849#9409
25K → 30K538*10+528#9409#8881
30K → 20M2332+231#8881#8650
20M → 21M2112+209#8650#8441
21M → 35K1942+192#8441#8249
35K → 23M3730+373#8249#7876
23M → 24M2760+276#7876#7600
24M → 40K2670+267#7600#7333
40K → 25.2M970+97#7333#7236
25.2M → Finish2531+252#7236#6984
TOTALS4537*206+4331

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

Passing Charts

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