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BOSTON MARATHON 2023

John Erickson

Bib: 24369•M

NM

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M70-74)
#0 / 213
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
10:37/mi
33:00
↑ 97↓ 3451.5%
10K· 6.21 mi
10:41/mi
1:06:12
↑ 79↓ 1380.4%
15K· 9.32 mi
11:22/mi
1:41:31
↑ 67↓ 78
20K· 12.43 mi
11:36/mi
2:17:32
↑ 106↓ 860.1%
Half· 13.11 mi
11:08/mi
2:25:08
↑ 19↓ 370.5%
25K· 15.53 mi
12:37/mi
2:55:43
↑ 66↓ 880.2%
30K· 18.64 mi
14:08/mi
3:39:39
↑ 181↓ 1480.2%
20M
13:06/mi
3:57:27
↑ 64↓ 500.2%
21M
13:38/mi
4:11:05
↑ 106↓ 241.6%
35K· 21.75 mi
12:37/mi
4:20:31
↑ 17↓ 861.7%
23M
13:17/mi
4:37:09
↑ 23↓ 630.6%
24M
12:39/mi
4:49:48
↓ 821.3%
40K· 24.85 mi
13:07/mi
5:01:01
↓ 200.3%
25.2M
14:59/mi
5:06:11
↑ 13↓ 160.2%
Finish· 26.22 mi
12:46/mi
5:19:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:25:08
Pace11:04 /mi
2nd Half
Distance13.11 mi
Time2:54:04
Pace13:17 /mi
📊Positive Split: 19.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:0033:0010:3733:00
10:37
-
10K
6.21 mi12:24:121:06:1210:3933:12
10:41
+0:04
15K
9.32 mi12:59:311:41:3110:5435:19
11:22
+0:41
20K
12.43 mi13:35:322:17:3211:0436:01
11:36
+0:14
Half
13.11 mi13:43:082:25:0811:047:36
11:08
-0:28
25K
15.53 mi14:13:432:55:4311:1930:35
12:37
+1:29
30K
18.64 mi14:57:393:39:3911:4743:56
14:08
+1:31
20M
20.00 mi15:15:273:57:2711:5217:48
13:06
-1:02
21M
21.00 mi15:29:054:11:0511:5713:38
13:38
+0:32
35K
21.75 mi15:38:314:20:3111:599:26
12:37
-1:01
23M
23.00 mi15:55:094:37:0912:0316:38
13:17
+0:40
24M
24.00 mi16:07:484:49:4812:0512:39
12:39
-0:38
40K
24.85 mi16:19:015:01:0112:0711:13
13:07
+0:28
25.2M
25.20 mi16:24:115:06:1112:095:10
14:59
+1:52
Finish
26.22 mi16:37:125:19:1212:1113:01
12:46
-2:13

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

10:37 /mi

Average Pace

12:11 /mi

Slowest Pace

14:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:08

45% of race

Time at Steady Pace

1:34:42

30% of race

Time at Slower Pace

1:19:22

25% of race

Average Pace: 12:10 /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 mi11:51:0033:0010:3733:00
10:37
#24993
10K
6.21 mi12:24:121:06:1210:3933:12
10:41
#25006
15K
9.32 mi12:59:311:41:3110:5435:19
11:22
#25287
20K
12.43 mi13:35:322:17:3211:0436:01
11:36
#25318
Half
13.11 mi13:43:082:25:0811:047:36
11:08
#25308
25K
15.53 mi14:13:432:55:4311:1930:35
12:37
#25396
30K
18.64 mi14:57:393:39:3911:4743:56
14:08
#25622
20M
20.00 mi15:15:273:57:2711:5217:48
13:06
#25600
21M
21.00 mi15:29:054:11:0511:5713:38
13:38
#25558
35K
21.75 mi15:38:314:20:3111:599:26
12:37
#25552
23M
23.00 mi15:55:094:37:0912:0316:38
13:17
#25549
24M
24.00 mi16:07:484:49:4812:0512:39
12:39
#25547
40K
24.85 mi16:19:015:01:0112:0711:13
13:07
#25536
25.2M
25.20 mi16:24:115:06:1112:095:10
14:59
#25539
Finish
26.22 mi16:37:125:19:1212:1113:01
12:46
#25569
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM70-74Seg. OverallSeg. MalesSeg. M70-74
5K3.11 mi3.11 mi24993145451454525570(Top 96%)14758(Top 97%)14758(Top 6929%)
10K6.21 mi3.10 mi25006-1314548-314548-324998(Top 94%)14536(Top 96%)14536(Top 6824%)
15K9.32 mi3.11 mi25287-28114659-11114659-11125570(Top 96%)14758(Top 97%)14758(Top 6929%)
20K12.43 mi3.11 mi25318-3114660-114660-125346(Top 95%)14642(Top 96%)14642(Top 6874%)
Half13.11 mi0.68 mi25308+1014649+1114649+1125128(Top 94%)14545(Top 96%)14545(Top 6829%)
25K15.53 mi2.42 mi25396-8814679-3014679-3025636(Top 96%)14747(Top 97%)14747(Top 6923%)
30K18.64 mi3.11 mi25622-22614757-7814757-7826091(Top 98%)14924(Top 98%)14924(Top 7007%)
20M20.00 mi1.36 mi25600+2214745+1214745+1225256(Top 95%)14501(Top 96%)14501(Top 6808%)
21M21.00 mi1.00 mi25558+4214719+2614719+2624711(Top 93%)14230(Top 94%)14230(Top 6681%)
35K21.75 mi0.75 mi25552+614715+414715+425270(Top 95%)14457(Top 95%)14457(Top 6787%)
23M23.00 mi1.25 mi25549+314707+814707+825352(Top 95%)14509(Top 96%)14509(Top 6812%)
24M24.00 mi1.00 mi25547+214702+514702+525201(Top 95%)14394(Top 95%)14394(Top 6758%)
40K24.85 mi0.85 mi25536+1114691+1114691+1125030(Top 94%)14321(Top 94%)14321(Top 6723%)
25.2M25.20 mi0.35 mi25539-3146911469125696(Top 97%)14646(Top 97%)14646(Top 6876%)
Finish26.22 mi1.02 mi25569-3014705-1414705-1425831(Top 97%)14722(Top 97%)14722(Top 6912%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 96%
×21story building
+97ft-345ft

Overall

25570

Males

14758

M70-74

14758

5K→10K

3.1 - 6.2 mi

Top 94%
×5story building
+79ft-138ft

Overall

24998

Males

14536

M70-74

14536

10K→15K

6.2 - 9.3 mi

Top 96%
×3story building
+67ft-78ft

Overall

25570

Males

14758

M70-74

14758

15K→20K

9.3 - 12.4 mi

Top 95%
×5story building
+106ft-86ft

Overall

25346

Males

14642

M70-74

14642

20K→Half

12.4 - 13.1 mi

Top 94%
×2story building
+19ft-37ft

Overall

25128

Males

14545

M70-74

14545

Half→25K

13.1 - 15.5 mi

Top 96%
×4story building
+66ft-88ft

Overall

25636

Males

14747

M70-74

14747

25K→30K

15.5 - 18.6 mi

Top 98%
×9story building
+181ft-148ft

Overall

26091

Males

14924

M70-74

14924

30K→20M

18.6 - 20.0 mi

Top 95%
×5story building
+64ft-50ft

Overall

25256

Males

14501

M70-74

14501

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

24711

Males

14230

M70-74

14230

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

25270

Males

14457

M70-74

14457

35K→23M

21.8 - 23.0 mi

Top 95%
×5story building
+23ft-63ft

Overall

25352

Males

14509

M70-74

14509

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

25201

Males

14394

M70-74

14394

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

25030

Males

14321

M70-74

14321

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

25696

Males

14646

M70-74

14646

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2story building
+22ft-21ft

Overall

25831

Males

14722

M70-74

14722

Passing Analysis

Category:
Athletes Passed
553
Passed By
1129
Net Change
-576
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24993
5K → 10K178191-13#24993#25006
10K → 15K30311-281#25006#25287
15K → 20K78109-31#25287#25318
20K → Half2616+10#25318#25308
Half → 25K38126-88#25308#25396
25K → 30K15241-226#25396#25622
30K → 20M3917+22#25622#25600
20M → 21M519+42#25600#25558
21M → 35K1812+6#25558#25552
35K → 23M2421+3#25552#25549
23M → 24M1816+2#25549#25547
24M → 40K2413+11#25547#25536
40K → 25.2M58-3#25536#25539
25.2M → Finish939-30#25539#25569
TOTALS5531129-576
📊

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