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BOSTON MARATHON 2023

Alexander Stolerman

Bib: 1199•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 8%
Division (M18-39)
#0 / 5285
Top 19%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:19
Rank: #1167
Start → 5K
19:19 | 6:13/mi
10K· 6.21 mi
38:40
Rank: #1260 (-93)
5K → 10K
19:21 | 6:14/mi
15K· 9.32 mi
57:59
Rank: #1257 (+3)
10K → 15K
19:19 | 6:13/mi
20K· 12.43 mi
1:17:21
Rank: #1217 (+40)
15K → 20K
19:22 | 6:14/mi
Half· 13.11 mi
1:21:37
Rank: #1232 (-15)
20K → Half
4:16 | 6:15/mi
25K· 15.53 mi
1:38:05
Rank: #1549 (-317)
Half → 25K
16:28 | 6:47/mi
30K· 18.64 mi
1:57:59
Rank: #1460 (+89)
25K → 30K
19:54 | 6:24/mi
20M
2:06:43
Rank: #1420 (+40)
30K → 20M
8:44 | 6:26/mi
21M
2:13:27
Rank: #1397 (+23)
20M → 21M
6:44 | 6:44/mi
35K· 21.75 mi
2:18:09
Rank: #1393 (+4)
21M → 35K
4:42 | 6:17/mi
23M
2:26:12
Rank: #1357 (+36)
35K → 23M
8:03 | 6:26/mi
24M
2:32:26
Rank: #1325 (+32)
23M → 24M
6:14 | 6:14/mi
40K· 24.85 mi
2:37:55
Rank: #1307 (+18)
24M → 40K
5:29 | 6:25/mi
25.2M
2:40:13
Rank: #1286 (+21)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:46:27
Rank: #1261 (+25)
25.2M → Finish
6:14 | 6:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:37
Pace6:14 /mi
2nd Half
Distance13.11 mi
Time1:24:50
Pace6:28 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:3919:196:1319:19
6:13
-
10K
6.21 mi10:39:0038:406:1319:21
6:14
+0:01
15K
9.32 mi10:58:1957:596:1319:19
6:13
-0:01
20K
12.43 mi11:17:411:17:216:1319:22
6:14
+0:01
Half
13.11 mi11:21:571:21:376:144:16
6:15
+0:01
25K
15.53 mi11:38:251:38:056:1916:28
6:47
+0:32
30K
18.64 mi11:58:191:57:596:2019:54
6:24
-0:23
20M
20.00 mi12:07:032:06:436:208:44
6:26
+0:02
21M
21.00 mi12:13:472:13:276:216:44
6:44
+0:18
35K
21.75 mi12:18:292:18:096:214:42
6:17
-0:27
23M
23.00 mi12:26:322:26:126:218:03
6:26
+0:09
24M
24.00 mi12:32:462:32:266:216:14
6:14
-0:12
40K
24.85 mi12:38:152:37:556:215:29
6:25
+0:11
25.2M
25.20 mi12:40:332:40:136:212:18
6:40
+0:15
Finish
26.22 mi12:46:472:46:276:216:14
6:07
-0:33

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

6:07 /mi

Average Pace

6:21 /mi

Slowest Pace

6:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:15

86% of race

Time at Steady Pace

23:12

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:21 /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 mi10:19:3919:196:1319:19
6:13
#1167
10K
6.21 mi10:39:0038:406:1319:21
6:14
#1260
15K
9.32 mi10:58:1957:596:1319:19
6:13
#1257
20K
12.43 mi11:17:411:17:216:1319:22
6:14
#1217
Half
13.11 mi11:21:571:21:376:144:16
6:15
#1232
25K
15.53 mi11:38:251:38:056:1916:28
6:47
#1549
30K
18.64 mi11:58:191:57:596:2019:54
6:24
#1460
20M
20.00 mi12:07:032:06:436:208:44
6:26
#1420
21M
21.00 mi12:13:472:13:276:216:44
6:44
#1397
35K
21.75 mi12:18:292:18:096:214:42
6:17
#1393
23M
23.00 mi12:26:322:26:126:218:03
6:26
#1357
24M
24.00 mi12:32:462:32:266:216:14
6:14
#1325
40K
24.85 mi12:38:152:37:556:215:29
6:25
#1307
25.2M
25.20 mi12:40:332:40:136:212:18
6:40
#1286
Finish
26.22 mi12:46:472:46:276:216:14
6:07
#1261
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1167110511051306(Top 5%)1244(Top 8%)1244(Top 24%)
10K6.21 mi3.10 mi1260-931195-901195-901458(Top 5%)1392(Top 9%)1392(Top 26%)
15K9.32 mi3.11 mi1257+31194+11194+11306(Top 5%)1244(Top 8%)1244(Top 24%)
20K12.43 mi3.11 mi1217+401159+351159+351156(Top 4%)1103(Top 7%)1103(Top 21%)
Half13.11 mi0.68 mi1232-151174-151174-151575(Top 6%)1510(Top 10%)1510(Top 29%)
25K15.53 mi2.42 mi1549-3171481-3071481-3074043(Top 15%)3789(Top 25%)3789(Top 72%)
30K18.64 mi3.11 mi1460+891395+861395+861219(Top 5%)1163(Top 8%)1163(Top 22%)
20M20.00 mi1.36 mi1420+401357+381357+381211(Top 5%)1153(Top 8%)1153(Top 22%)
21M21.00 mi1.00 mi1397+231334+231334+231198(Top 5%)1140(Top 8%)1140(Top 22%)
35K21.75 mi0.75 mi1393+41329+51329+51497(Top 6%)1421(Top 9%)1421(Top 27%)
23M23.00 mi1.25 mi1357+361294+351294+351197(Top 4%)1131(Top 7%)1131(Top 21%)
24M24.00 mi1.00 mi1325+321264+301264+301122(Top 4%)1063(Top 7%)1063(Top 20%)
40K24.85 mi0.85 mi1307+181246+181246+181235(Top 5%)1163(Top 8%)1163(Top 22%)
25.2M25.20 mi0.35 mi1286+211225+211225+21834(Top 3%)795(Top 5%)795(Top 15%)
Finish26.22 mi1.02 mi1261+251202+231202+231030(Top 4%)979(Top 6%)979(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1306

Males

1244

M18-39

1244

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1458

Males

1392

M18-39

1392

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1306

Males

1244

M18-39

1244

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1156

Males

1103

M18-39

1103

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1575

Males

1510

M18-39

1510

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4043

Males

3789

M18-39

3789

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1219

Males

1163

M18-39

1163

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1211

Males

1153

M18-39

1153

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1198

Males

1140

M18-39

1140

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1497

Males

1421

M18-39

1421

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1197

Males

1131

M18-39

1131

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1122

Males

1063

M18-39

1063

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1235

Males

1163

M18-39

1163

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

834

Males

795

M18-39

795

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1030

Males

979

M18-39

979

Passing Analysis

Category:
Athletes Passed
495
Passed By
589
Net Change
-94
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1167
5K → 10K27120-93#1167#1260
10K → 15K4239+3#1260#1257
15K → 20K5616+40#1257#1217
20K → Half116-15#1217#1232
Half → 25K1318-317#1232#1549
25K → 30K10112+89#1549#1460
30K → 20M477+40#1460#1420
20M → 21M3512+23#1420#1397
21M → 35K1511+4#1397#1393
35K → 23M459+36#1393#1357
23M → 24M419+32#1357#1325
24M → 40K268+18#1325#1307
40K → 25.2M221+21#1307#1286
25.2M → Finish3611+25#1286#1261
TOTALS495589-94
📊

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