Boston Marathon logo
BOSTON MARATHON 2023

Lydia Deneen

Bib: 30289•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 42%
Division (F18-39)
#0 / 4884
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
8:13/mi
25:31
↑ 97↓ 3451.5%
10K· 6.21 mi
7:51/mi
49:54
↑ 79↓ 1380.4%
15K· 9.32 mi
7:53/mi
1:14:25
↑ 67↓ 78
20K· 12.43 mi
7:41/mi
1:38:17
↑ 106↓ 860.1%
Half· 13.11 mi
7:43/mi
1:43:33
↑ 19↓ 370.5%
25K· 15.53 mi
8:04/mi
2:03:07
↑ 66↓ 880.2%
30K· 18.64 mi
8:39/mi
2:30:01
↑ 181↓ 1480.2%
20M
9:02/mi
2:42:18
↑ 64↓ 500.2%
21M
9:45/mi
2:52:03
↑ 106↓ 241.6%
35K· 21.75 mi
8:56/mi
2:58:44
↑ 17↓ 861.7%
23M
9:21/mi
3:10:27
↑ 23↓ 630.6%
24M
9:13/mi
3:19:40
↓ 821.3%
40K· 24.85 mi
9:21/mi
3:27:40
↓ 200.3%
25.2M
9:46/mi
3:31:02
↑ 13↓ 160.2%
Finish· 26.22 mi
8:33/mi
3:39:45
↑ 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
Time1:43:33
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:56:12
Pace8:52 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:0325:318:1325:31
8:13
-
10K
6.21 mi12:12:2649:548:0224:23
7:51
-0:22
15K
9.32 mi12:36:571:14:257:5924:31
7:53
+0:02
20K
12.43 mi13:00:491:38:177:5523:52
7:41
-0:12
Half
13.11 mi13:06:051:43:337:545:16
7:43
+0:02
25K
15.53 mi13:25:392:03:077:5619:34
8:04
+0:21
30K
18.64 mi13:52:332:30:018:0326:54
8:39
+0:35
20M
20.00 mi14:04:502:42:188:0712:17
9:02
+0:23
21M
21.00 mi14:14:352:52:038:129:45
9:45
+0:43
35K
21.75 mi14:21:162:58:448:136:41
8:56
-0:49
23M
23.00 mi14:32:593:10:278:1711:43
9:21
+0:25
24M
24.00 mi14:42:123:19:408:199:13
9:13
-0:08
40K
24.85 mi14:50:123:27:408:218:00
9:21
+0:08
25.2M
25.20 mi14:53:343:31:028:223:22
9:46
+0:25
Finish
26.22 mi15:02:173:39:458:238:43
8:33
-1:13

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

7:41 /mi

Average Pace

8:23 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:07

56% of race

Time at Steady Pace

42:18

19% of race

Time at Slower Pace

54:20

25% of race

Average Pace: 8:23 /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 mi11:48:0325:318:1325:31
8:13
#15569
10K
6.21 mi12:12:2649:548:0224:23
7:51
#14607
15K
9.32 mi12:36:571:14:257:5924:31
7:53
#14257
20K
12.43 mi13:00:491:38:177:5523:52
7:41
#13401
Half
13.11 mi13:06:051:43:337:545:16
7:43
#13315
25K
15.53 mi13:25:392:03:077:5619:34
8:04
#13282
30K
18.64 mi13:52:332:30:018:0326:54
8:39
#13663
20M
20.00 mi14:04:502:42:188:0712:17
9:02
#13958
21M
21.00 mi14:14:352:52:038:129:45
9:45
#14163
35K
21.75 mi14:21:162:58:448:136:41
8:56
#14298
23M
23.00 mi14:32:593:10:278:1711:43
9:21
#14537
24M
24.00 mi14:42:123:19:408:199:13
9:13
#14718
40K
24.85 mi14:50:123:27:408:218:00
9:21
#14818
25.2M
25.20 mi14:53:343:31:028:223:22
9:46
#14832
Finish
26.22 mi15:02:173:39:458:238:43
8:33
#14874
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi155695014501413472(Top 51%)3767(Top 33%)3767(Top 77%)
10K6.21 mi3.10 mi14607+9624410+6044410+60413565(Top 51%)3775(Top 33%)3775(Top 77%)
15K9.32 mi3.11 mi14257+3504212+1984212+19813472(Top 51%)3767(Top 33%)3767(Top 77%)
20K12.43 mi3.11 mi13401+8563721+4913721+49110799(Top 41%)2317(Top 20%)2317(Top 47%)
Half13.11 mi0.68 mi13315+863674+473674+4712141(Top 46%)3019(Top 26%)3019(Top 62%)
25K15.53 mi2.42 mi13282+333670+43670+413323(Top 50%)3821(Top 33%)3821(Top 78%)
30K18.64 mi3.11 mi13663-3813935-2653935-26515274(Top 57%)5099(Top 45%)5099(Top 104%)
20M20.00 mi1.36 mi13958-2954137-2024137-20216749(Top 63%)6000(Top 53%)6000(Top 123%)
21M21.00 mi1.00 mi14163-2054289-1524289-15217057(Top 64%)6220(Top 54%)6220(Top 127%)
35K21.75 mi0.75 mi14298-1354389-1004389-10017626(Top 66%)6612(Top 58%)6612(Top 135%)
23M23.00 mi1.25 mi14537-2394547-1584547-15817759(Top 67%)6720(Top 59%)6720(Top 138%)
24M24.00 mi1.00 mi14718-1814688-1414688-14118121(Top 68%)6957(Top 61%)6957(Top 142%)
40K24.85 mi0.85 mi14818-1004773-854773-8517785(Top 67%)6826(Top 60%)6826(Top 140%)
25.2M25.20 mi0.35 mi14832-144792-194792-1916393(Top 62%)6087(Top 53%)6087(Top 125%)
Finish26.22 mi1.02 mi14874-424833-414833-4115751(Top 59%)5671(Top 50%)5671(Top 116%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13472

Females

3767

F18-39

3767

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13565

Females

3775

F18-39

3775

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13472

Females

3767

F18-39

3767

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

10799

Females

2317

F18-39

2317

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12141

Females

3019

F18-39

3019

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13323

Females

3821

F18-39

3821

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

15274

Females

5099

F18-39

5099

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

16749

Females

6000

F18-39

6000

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

17057

Females

6220

F18-39

6220

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

17626

Females

6612

F18-39

6612

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17759

Females

6720

F18-39

6720

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

18121

Females

6957

F18-39

6957

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17785

Females

6826

F18-39

6826

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16393

Females

6087

F18-39

6087

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15751

Females

5671

F18-39

5671

Passing Analysis

Category:
Athletes Passed
2865
Passed By
2170
Net Change
+695
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15569
5K → 10K101654+962#15569#14607
10K → 15K40656+350#14607#14257
15K → 20K8593+856#14257#13401
20K → Half937+86#13401#13315
Half → 25K154121+33#13315#13282
25K → 30K83464-381#13282#13663
30K → 20M37332-295#13663#13958
20M → 21M30235-205#13958#14163
21M → 35K22157-135#14163#14298
35K → 23M26265-239#14298#14537
23M → 24M30211-181#14537#14718
24M → 40K39139-100#14718#14818
40K → 25.2M2236-14#14818#14832
25.2M → Finish4890-42#14832#14874
TOTALS28652170+695
📊

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