Boston Marathon logo
BOSTON MARATHON 2023

John Blendell

Bib: 24021•M

IN

0:00
0:00
/ mi
Masters
Be the first to cheer!
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
10:09/mi
31:32
↑ 97↓ 3451.5%
10K· 6.21 mi
10:26/mi
1:03:57
↑ 79↓ 1380.4%
15K· 9.32 mi
10:18/mi
1:35:56
↑ 67↓ 78
20K· 12.43 mi
10:25/mi
2:08:17
↑ 106↓ 860.1%
Half· 13.11 mi
10:23/mi
2:15:22
↑ 19↓ 370.5%
25K· 15.53 mi
10:26/mi
2:40:39
↑ 66↓ 880.2%
30K· 18.64 mi
11:07/mi
3:15:10
↑ 181↓ 1480.2%
20M
11:15/mi
3:30:27
↑ 64↓ 500.2%
21M
13:05/mi
3:43:32
↑ 106↓ 241.6%
35K· 21.75 mi
11:42/mi
3:52:17
↑ 17↓ 861.7%
23M
12:10/mi
4:07:31
↑ 23↓ 630.6%
24M
11:13/mi
4:18:44
↓ 821.3%
40K· 24.85 mi
12:26/mi
4:29:22
↓ 200.3%
25.2M
12:37/mi
4:33:43
↑ 13↓ 160.2%
Finish· 26.22 mi
12:11/mi
4:46:08
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:22
Pace10:20 /mi
2nd Half
Distance13.11 mi
Time2:30:46
Pace11:30 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:02:1631:3210:0931:32
10:09
-
10K
6.21 mi11:34:411:03:5710:1832:25
10:26
+0:17
15K
9.32 mi12:06:401:35:5610:1831:59
10:18
-0:08
20K
12.43 mi12:39:012:08:1710:1932:21
10:25
+0:07
Half
13.11 mi12:46:062:15:2210:207:05
10:23
-0:02
25K
15.53 mi13:11:232:40:3910:2025:17
10:26
+0:03
30K
18.64 mi13:45:543:15:1010:2834:31
11:07
+0:41
20M
20.00 mi14:01:113:30:2710:3115:17
11:15
+0:08
21M
21.00 mi14:14:163:43:3210:3913:05
13:05
+1:50
35K
21.75 mi14:23:013:52:1710:418:45
11:42
-1:23
23M
23.00 mi14:38:154:07:3110:4615:14
12:10
+0:28
24M
24.00 mi14:49:284:18:4410:4711:13
11:13
-0:57
40K
24.85 mi15:00:064:29:2210:5010:38
12:26
+1:13
25.2M
25.20 mi15:04:274:33:4310:524:21
12:37
+0:11
Finish
26.22 mi15:16:524:46:0810:5512:25
12:11
-0:26

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

10:09 /mi

Average Pace

10:55 /mi

Slowest Pace

13:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:39

56% of race

Time at Steady Pace

1:01:01

21% of race

Time at Slower Pace

1:04:28

23% of race

Average Pace: 10:55 /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 mi11:02:1631:3210:0931:32
10:09
#23804
10K
6.21 mi11:34:411:03:5710:1832:25
10:26
#24248
15K
9.32 mi12:06:401:35:5610:1831:59
10:18
#24200
20K
12.43 mi12:39:012:08:1710:1932:21
10:25
#24064
Half
13.11 mi12:46:062:15:2210:207:05
10:23
#24049
25K
15.53 mi13:11:232:40:3910:2025:17
10:26
#23852
30K
18.64 mi13:45:543:15:1010:2834:31
11:07
#23740
20M
20.00 mi14:01:113:30:2710:3115:17
11:15
#23693
21M
21.00 mi14:14:163:43:3210:3913:05
13:05
#23748
35K
21.75 mi14:23:013:52:1710:418:45
11:42
#23794
23M
23.00 mi14:38:154:07:3110:4615:14
12:10
#23830
24M
24.00 mi14:49:284:18:4410:4711:13
11:13
#23823
40K
24.85 mi15:00:064:29:2210:5010:38
12:26
#23865
25.2M
25.20 mi15:04:274:33:4310:524:21
12:37
#23854
Finish
26.22 mi15:16:524:46:0810:5512:25
12:11
#23941
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM70-74Seg. OverallSeg. MalesSeg. M70-74
5K3.11 mi3.11 mi23804139901399024083(Top 90%)14124(Top 93%)14124(Top 6631%)
10K6.21 mi3.10 mi24248-44414204-21414204-21424559(Top 92%)14336(Top 94%)14336(Top 6731%)
15K9.32 mi3.11 mi24200+4814177+2714177+2724083(Top 90%)14124(Top 93%)14124(Top 6631%)
20K12.43 mi3.11 mi24064+13614113+6414113+6423677(Top 89%)13925(Top 92%)13925(Top 6538%)
Half13.11 mi0.68 mi24049+1514107+614107+623985(Top 90%)14057(Top 93%)14057(Top 6600%)
25K15.53 mi2.42 mi23852+19714010+9714010+9723053(Top 87%)13613(Top 90%)13613(Top 6391%)
30K18.64 mi3.11 mi23740+11213943+6713943+6723255(Top 87%)13635(Top 90%)13635(Top 6401%)
20M20.00 mi1.36 mi23693+4713908+3513908+3523089(Top 87%)13510(Top 89%)13510(Top 6343%)
21M21.00 mi1.00 mi23748-5513928-2013928-2024177(Top 91%)13967(Top 92%)13967(Top 6557%)
35K21.75 mi0.75 mi23794-4613942-1413942-1424344(Top 91%)14014(Top 92%)14014(Top 6579%)
23M23.00 mi1.25 mi23830-3613951-913951-924203(Top 91%)13945(Top 92%)13945(Top 6547%)
24M24.00 mi1.00 mi23823+713939+1213939+1223429(Top 88%)13548(Top 89%)13548(Top 6361%)
40K24.85 mi0.85 mi23865-4213948-913948-924364(Top 92%)13966(Top 92%)13966(Top 6557%)
25.2M25.20 mi0.35 mi23854+1113940+813940+823448(Top 88%)13528(Top 89%)13528(Top 6351%)
Finish26.22 mi1.02 mi23941-8713971-3113971-3125406(Top 95%)14510(Top 96%)14510(Top 6812%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

24083

Males

14124

M70-74

14124

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

24559

Males

14336

M70-74

14336

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

24083

Males

14124

M70-74

14124

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

23677

Males

13925

M70-74

13925

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

23985

Males

14057

M70-74

14057

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

23053

Males

13613

M70-74

13613

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

23255

Males

13635

M70-74

13635

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

23089

Males

13510

M70-74

13510

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

24177

Males

13967

M70-74

13967

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

24344

Males

14014

M70-74

14014

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

24203

Males

13945

M70-74

13945

23M→24M

23.0 - 24.0 mi

Top 88%
×6story building
+12ft-82ft

Overall

23429

Males

13548

M70-74

13548

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

24364

Males

13966

M70-74

13966

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23448

Males

13528

M70-74

13528

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×2story building
+22ft-21ft

Overall

25406

Males

14510

M70-74

14510

Passing Analysis

Category:
Athletes Passed
1001
Passed By
1138
Net Change
-137
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23804
5K → 10K48492-444#23804#24248
10K → 15K149101+48#24248#24200
15K → 20K17943+136#24200#24064
20K → Half2813+15#24064#24049
Half → 25K21013+197#24049#23852
25K → 30K16351+112#23852#23740
30K → 20M7932+47#23740#23693
20M → 21M2782-55#23693#23748
21M → 35K1157-46#23748#23794
35K → 23M3167-36#23794#23830
23M → 24M3730+7#23830#23823
24M → 40K1355-42#23823#23865
40K → 25.2M187+11#23865#23854
25.2M → Finish895-87#23854#23941
TOTALS10011138-137
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing