Boston Marathon logo
BOSTON MARATHON 2023

John Green

Bib: 998•M

GA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 0.4%
Gender (Male)
#0 / 15176
Top 0.6%
Division (M18-39)
#0 / 5285
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:22
Rank: #174
Start → 5K
17:22 | 5:35/mi
10K· 6.21 mi
34:29
Rank: #146 (+28)
5K → 10K
17:07 | 5:31/mi
15K· 9.32 mi
51:39
Rank: #147 (-1)
10K → 15K
17:10 | 5:32/mi
20K· 12.43 mi
1:08:49
Rank: #142 (+5)
15K → 20K
17:10 | 5:32/mi
Half· 13.11 mi
1:12:36
Rank: #140 (+2)
20K → Half
3:47 | 5:33/mi
25K· 15.53 mi
1:26:39
Rank: #144 (-4)
Half → 25K
14:03 | 5:48/mi
30K· 18.64 mi
1:44:26
Rank: #138 (+6)
25K → 30K
17:47 | 5:43/mi
20M
1:52:16
Rank: #134 (+4)
30K → 20M
7:50 | 5:46/mi
21M
1:58:13
Rank: #129 (+5)
20M → 21M
5:57 | 5:57/mi
35K· 21.75 mi
2:02:27
Rank: #128 (+1)
21M → 35K
4:14 | 5:40/mi
23M
2:09:43
Rank: #124 (+4)
35K → 23M
7:16 | 5:48/mi
24M
2:15:26
Rank: #124
23M → 24M
5:43 | 5:43/mi
40K· 24.85 mi
2:20:24
Rank: #120 (+4)
24M → 40K
4:58 | 5:49/mi
25.2M
2:22:31
Rank: #116 (+4)
40K → 25.2M
2:07 | 6:08/mi
Finish· 26.22 mi
2:28:12
Rank: #113 (+3)
25.2M → Finish
5:41 | 5:35/mi

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
Time1:12:36
Pace5:32 /mi
2nd Half
Distance13.11 mi
Time1:15:36
Pace5:46 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:2817:225:3517:22
5:35
-
10K
6.21 mi10:34:3534:295:3317:07
5:31
-0:04
15K
9.32 mi10:51:4551:395:3217:10
5:32
+0:01
20K
12.43 mi11:08:551:08:495:3217:10
5:32
0:00
Half
13.11 mi11:12:421:12:365:323:47
5:33
+0:01
25K
15.53 mi11:26:451:26:395:3514:03
5:48
+0:15
30K
18.64 mi11:44:321:44:265:3617:47
5:43
-0:05
20M
20.00 mi11:52:221:52:165:377:50
5:46
+0:03
21M
21.00 mi11:58:191:58:135:385:57
5:57
+0:11
35K
21.75 mi12:02:332:02:275:384:14
5:40
-0:17
23M
23.00 mi12:09:492:09:435:387:16
5:48
+0:08
24M
24.00 mi12:15:322:15:265:395:43
5:43
-0:05
40K
24.85 mi12:20:302:20:245:394:58
5:49
+0:06
25.2M
25.20 mi12:22:372:22:315:392:07
6:08
+0:19
Finish
26.22 mi12:28:182:28:125:395:41
5:35
-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

5:31 /mi

Average Pace

5:39 /mi

Slowest Pace

6:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:05

99% of race

Time at Steady Pace

2:07

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:39 /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 mi10:17:2817:225:3517:22
5:35
#174
10K
6.21 mi10:34:3534:295:3317:07
5:31
#146
15K
9.32 mi10:51:4551:395:3217:10
5:32
#147
20K
12.43 mi11:08:551:08:495:3217:10
5:32
#142
Half
13.11 mi11:12:421:12:365:323:47
5:33
#140
25K
15.53 mi11:26:451:26:395:3514:03
5:48
#144
30K
18.64 mi11:44:321:44:265:3617:47
5:43
#138
20M
20.00 mi11:52:221:52:165:377:50
5:46
#134
21M
21.00 mi11:58:191:58:135:385:57
5:57
#129
35K
21.75 mi12:02:332:02:275:384:14
5:40
#128
23M
23.00 mi12:09:492:09:435:387:16
5:48
#124
24M
24.00 mi12:15:322:15:265:395:43
5:43
#124
40K
24.85 mi12:20:302:20:245:394:58
5:49
#120
25.2M
25.20 mi12:22:372:22:315:392:07
6:08
#116
Finish
26.22 mi12:28:182:28:125:395:41
5:35
#113
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi174174174125(Top 0.5%)100(Top 0.7%)100(Top 2%)
10K6.21 mi3.10 mi146+28146+28146+28155(Top 0.6%)129(Top 0.9%)129(Top 2%)
15K9.32 mi3.11 mi147-1128+18128+18125(Top 0.5%)100(Top 0.7%)100(Top 2%)
20K12.43 mi3.11 mi142+5123+5123+5102(Top 0.4%)84(Top 0.6%)84(Top 2%)
Half13.11 mi0.68 mi140+2121+2121+2146(Top 0.5%)126(Top 0.8%)126(Top 2%)
25K15.53 mi2.42 mi144-4125-4125-4265(Top 1.0%)238(Top 2%)238(Top 5%)
30K18.64 mi3.11 mi138+6119+6119+6118(Top 0.4%)99(Top 0.7%)99(Top 2%)
20M20.00 mi1.36 mi134+4115+4115+4132(Top 0.5%)111(Top 0.7%)111(Top 2%)
21M21.00 mi1.00 mi129+5110+5110+592(Top 0.3%)75(Top 0.5%)75(Top 1%)
35K21.75 mi0.75 mi128+1109+1109+1177(Top 0.7%)154(Top 1%)154(Top 3%)
23M23.00 mi1.25 mi124+4105+4105+4135(Top 0.5%)115(Top 0.8%)115(Top 2%)
24M24.00 mi1.00 mi124105105176(Top 0.7%)153(Top 1%)153(Top 3%)
40K24.85 mi0.85 mi120+4101+4101+4151(Top 0.6%)136(Top 0.9%)136(Top 3%)
25.2M25.20 mi0.35 mi116+497+497+4121(Top 0.5%)106(Top 0.7%)106(Top 2%)
Finish26.22 mi1.02 mi113+395+295+2128(Top 0.5%)114(Top 0.8%)114(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.5%
×21stories
+97ft-345ft

Overall

125

Males

100

M18-39

100

5K→10K

3.1 - 6.2 mi

Top 0.6%
×5stories
+79ft-138ft

Overall

155

Males

129

M18-39

129

10K→15K

6.2 - 9.3 mi

Top 0.5%
×3stories
+67ft-78ft

Overall

125

Males

100

M18-39

100

15K→20K

9.3 - 12.4 mi

Top 0.4%
×5stories
+106ft-86ft

Overall

102

Males

84

M18-39

84

20K→Half

12.4 - 13.1 mi

Top 0.5%
×2stories
+19ft-37ft

Overall

146

Males

126

M18-39

126

Half→25K

13.1 - 15.5 mi

Top 1.0%
×4stories
+66ft-88ft

Overall

265

Males

238

M18-39

238

25K→30K

15.5 - 18.6 mi

Top 0.4%
×9stories
+181ft-148ft

Overall

118

Males

99

M18-39

99

30K→20M

18.6 - 20.0 mi

Top 0.5%
×5stories
+64ft-50ft

Overall

132

Males

111

M18-39

111

20M→21M

20.0 - 21.0 mi

Top 0.3%
×8stories
+106ft-24ft

Overall

92

Males

75

M18-39

75

21M→35K

21.0 - 21.8 mi

Top 0.7%
×7stories
+17ft-86ft

Overall

177

Males

154

M18-39

154

35K→23M

21.8 - 23.0 mi

Top 0.5%
×5stories
+23ft-63ft

Overall

135

Males

115

M18-39

115

23M→24M

23.0 - 24.0 mi

Top 0.7%
×6stories
+12ft-82ft

Overall

176

Males

153

M18-39

153

24M→40K

24.0 - 24.9 mi

Top 0.6%
×1story
+6ft-20ft

Overall

151

Males

136

M18-39

136

40K→25.2M

24.9 - 25.2 mi

Top 0.5%
×1story
+13ft-16ft

Overall

121

Males

106

M18-39

106

25.2M→Finish

25.2 - 26.2 mi

Top 0.5%
×2stories
+22ft-21ft

Overall

128

Males

114

M18-39

114

Passing Analysis

Category:
Athletes Passed
96
Passed By
35
Net Change
+61
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#174
5K → 10K291+28#174#146
10K → 15K1819-1#146#147
15K → 20K61+5#147#142
20K → Half20+2#142#140
Half → 25K59-4#140#144
25K → 30K71+6#144#138
30K → 20M62+4#138#134
20M → 21M50+5#134#129
21M → 35K10+1#129#128
35K → 23M51+4#128#124
23M → 24M110#124#124
24M → 40K40+4#124#120
40K → 25.2M40+4#120#116
25.2M → Finish30+3#116#113
TOTALS9635+61
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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