Boston Marathon logo
BOSTON MARATHON 2023

Robert Flynn

Bib: 24303•M

WA

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

Start
0:00:00
Race begins
5K· 3.11 mi
31:33
Rank: #23821
Start → 5K
10:09/mi
31:33 split
10K· 6.21 mi
1:01:47
Rank: #23498 (+323)
5K → 10K
9:44/mi
30:14 split
15K· 9.32 mi
1:32:08
Rank: #23329 (+169)
10K → 15K
9:46/mi
30:21 split
20K· 12.43 mi
2:03:03
Rank: #23197 (+132)
15K → 20K
9:57/mi
30:55 split
Half· 13.11 mi
2:09:42
Rank: #23167 (+30)
20K → Half
9:45/mi
6:39 split
25K· 15.53 mi
2:34:16
Rank: #23020 (+147)
Half → 25K
10:08/mi
24:34 split
30K· 18.64 mi
3:06:30
Rank: #22804 (+216)
25K → 30K
10:22/mi
32:14 split
20M
3:20:45
Rank: #22721 (+83)
30K → 20M
10:29/mi
14:15 split
21M
3:32:43
Rank: #22724 (-3)
20M → 21M
11:58/mi
11:58 split
35K· 21.75 mi
3:40:25
Rank: #22700 (+24)
21M → 35K
10:18/mi
7:42 split
23M
3:54:03
Rank: #22649 (+51)
35K → 23M
10:53/mi
13:38 split
24M
4:04:43
Rank: #22628 (+21)
23M → 24M
10:40/mi
10:40 split
40K· 24.85 mi
4:14:12
Rank: #22630 (-2)
24M → 40K
11:05/mi
9:29 split
25.2M
4:18:19
Rank: #22634 (-4)
40K → 25.2M
11:56/mi
4:07 split
Finish· 26.22 mi
4:29:29
Rank: #22693 (-59)
25.2M → Finish
10:57/mi
11:10 split

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
Time2:09:42
Pace9:54 /mi
2nd Half
Distance13.11 mi
Time2:19:47
Pace10:40 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5631:3310:0931:33
10:09
-
10K
6.21 mi12:21:101:01:479:5730:14
9:44
-0:25
15K
9.32 mi12:51:311:32:089:5330:21
9:46
+0:02
20K
12.43 mi13:22:262:03:039:5430:55
9:57
+0:11
Half
13.11 mi13:29:052:09:429:546:39
9:45
-0:12
25K
15.53 mi13:53:392:34:169:5624:34
10:08
+0:23
30K
18.64 mi14:25:533:06:3010:0032:14
10:22
+0:14
20M
20.00 mi14:40:083:20:4510:0214:15
10:29
+0:07
21M
21.00 mi14:52:063:32:4310:0811:58
11:58
+1:29
35K
21.75 mi14:59:483:40:2510:087:42
10:18
-1:40
23M
23.00 mi15:13:263:54:0310:1113:38
10:53
+0:35
24M
24.00 mi15:24:064:04:4310:1210:40
10:40
-0:13
40K
24.85 mi15:33:354:14:1210:149:29
11:05
+0:25
25.2M
25.20 mi15:37:424:18:1910:154:07
11:56
+0:51
Finish
26.22 mi15:48:524:29:2910:1711:10
10:57
-0:59

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

9:44 /mi

Average Pace

10:17 /mi

Slowest Pace

11:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:09

36% of race

Time at Steady Pace

2:00:58

45% of race

Time at Slower Pace

50:22

19% of race

Average Pace: 10:17 /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 mi11:50:5631:3310:0931:33
10:09
#23821
10K
6.21 mi12:21:101:01:479:5730:14
9:44
#23498
15K
9.32 mi12:51:311:32:089:5330:21
9:46
#23329
20K
12.43 mi13:22:262:03:039:5430:55
9:57
#23197
Half
13.11 mi13:29:052:09:429:546:39
9:45
#23167
25K
15.53 mi13:53:392:34:169:5624:34
10:08
#23020
30K
18.64 mi14:25:533:06:3010:0032:14
10:22
#22804
20M
20.00 mi14:40:083:20:4510:0214:15
10:29
#22721
21M
21.00 mi14:52:063:32:4310:0811:58
11:58
#22724
35K
21.75 mi14:59:483:40:2510:087:42
10:18
#22700
23M
23.00 mi15:13:263:54:0310:1113:38
10:53
#22649
24M
24.00 mi15:24:064:04:4310:1210:40
10:40
#22628
40K
24.85 mi15:33:354:14:1210:149:29
11:05
#22630
25.2M
25.20 mi15:37:424:18:1910:154:07
11:56
#22634
Finish
26.22 mi15:48:524:29:2910:1711:10
10:57
#22693
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM70-74Seg. OverallSeg. MalesSeg. M70-74
5K3.11 mi3.11 mi23821139971399722962(Top 86%)13618(Top 90%)13618(Top 6393%)
10K6.21 mi3.10 mi23498+32313854+14313854+14323113(Top 87%)13698(Top 90%)13698(Top 6431%)
15K9.32 mi3.11 mi23329+16913788+6613788+6622962(Top 86%)13618(Top 90%)13618(Top 6393%)
20K12.43 mi3.11 mi23197+13213720+6813720+6822784(Top 86%)13523(Top 89%)13523(Top 6349%)
Half13.11 mi0.68 mi23167+3013707+1313707+1322743(Top 85%)13513(Top 89%)13513(Top 6344%)
25K15.53 mi2.42 mi23020+14713630+7713630+7722487(Top 84%)13357(Top 88%)13357(Top 6271%)
30K18.64 mi3.11 mi22804+21613498+13213498+13221944(Top 82%)13048(Top 86%)13048(Top 6126%)
20M20.00 mi1.36 mi22721+8313446+5213446+5221699(Top 82%)12871(Top 85%)12871(Top 6043%)
21M21.00 mi1.00 mi22724-313442+413442+422700(Top 85%)13289(Top 88%)13289(Top 6239%)
35K21.75 mi0.75 mi22700+2413417+2513417+2521965(Top 83%)12915(Top 85%)12915(Top 6063%)
23M23.00 mi1.25 mi22649+5113393+2413393+2422130(Top 83%)12974(Top 85%)12974(Top 6091%)
24M24.00 mi1.00 mi22628+2113370+2313370+2322370(Top 84%)13050(Top 86%)13050(Top 6127%)
40K24.85 mi0.85 mi22630-213363+713363+722528(Top 85%)13096(Top 86%)13096(Top 6148%)
25.2M25.20 mi0.35 mi22634-4133631336322362(Top 84%)13019(Top 86%)13019(Top 6112%)
Finish26.22 mi1.02 mi22693-5913385-2213385-2223880(Top 90%)13761(Top 91%)13761(Top 6461%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

22962

Males

13618

M70-74

13618

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

23113

Males

13698

M70-74

13698

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

22962

Males

13618

M70-74

13618

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

22784

Males

13523

M70-74

13523

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

22743

Males

13513

M70-74

13513

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

22487

Males

13357

M70-74

13357

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

21944

Males

13048

M70-74

13048

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

21699

Males

12871

M70-74

12871

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

22700

Males

13289

M70-74

13289

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

21965

Males

12915

M70-74

12915

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

22130

Males

12974

M70-74

12974

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

22370

Males

13050

M70-74

13050

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22528

Males

13096

M70-74

13096

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22362

Males

13019

M70-74

13019

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2story building
+22ft-21ft

Overall

23880

Males

13761

M70-74

13761

Passing Analysis

Category:
Athletes Passed
1653
Passed By
525
Net Change
+1128
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23821
5K → 10K41491+323#23821#23498
10K → 15K22455+169#23498#23329
15K → 20K18149+132#23329#23197
20K → Half4414+30#23197#23167
Half → 25K18033+147#23167#23020
25K → 30K24125+216#23020#22804
30K → 20M10421+83#22804#22721
20M → 21M4447-3#22721#22724
21M → 35K3814+24#22724#22700
35K → 23M8130+51#22700#22649
23M → 24M4423+21#22649#22628
24M → 40K2527-2#22628#22630
40K → 25.2M1418-4#22630#22634
25.2M → Finish1978-59#22634#22693
TOTALS1653525+1128
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing