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BOSTON MARATHON 2023

Kate Gunderson

Bib: 16023•F

ND

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 29%
Division (F18-39)
#0 / 4884
Top 47%
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
8:03/mi
25:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:56/mi
49:38
↑ 79↓ 1380.4%
15K· 9.32 mi
7:51/mi
1:14:02
↑ 67↓ 78
20K· 12.43 mi
7:55/mi
1:38:38
↑ 106↓ 860.1%
Half· 13.11 mi
7:48/mi
1:43:57
↑ 19↓ 370.5%
25K· 15.53 mi
7:54/mi
2:03:06
↑ 66↓ 880.2%
30K· 18.64 mi
8:13/mi
2:28:39
↑ 181↓ 1480.2%
20M
8:19/mi
2:39:58
↑ 64↓ 500.2%
21M
8:19/mi
2:48:17
↑ 106↓ 241.6%
35K· 21.75 mi
8:01/mi
2:54:17
↑ 17↓ 861.7%
23M
8:22/mi
3:04:45
↑ 23↓ 630.6%
24M
7:56/mi
3:12:41
↓ 821.3%
40K· 24.85 mi
8:05/mi
3:19:36
↓ 200.3%
25.2M
8:39/mi
3:22:35
↑ 13↓ 160.2%
Finish· 26.22 mi
7:43/mi
3:30:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:57
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time1:46:30
Pace8:07 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3425:008:0325:00
8:03
-
10K
6.21 mi11:45:1249:387:5924:38
7:56
-0:07
15K
9.32 mi12:09:361:14:027:5724:24
7:51
-0:05
20K
12.43 mi12:34:121:38:387:5624:36
7:55
+0:04
Half
13.11 mi12:39:311:43:577:565:19
7:48
-0:07
25K
15.53 mi12:58:402:03:067:5519:09
7:54
+0:06
30K
18.64 mi13:24:132:28:397:5825:33
8:13
+0:19
20M
20.00 mi13:35:322:39:588:0011:19
8:19
+0:06
21M
21.00 mi13:43:512:48:178:018:19
8:19
0:00
35K
21.75 mi13:49:512:54:178:016:00
8:01
-0:18
23M
23.00 mi14:00:193:04:458:0210:28
8:22
+0:21
24M
24.00 mi14:08:153:12:418:027:56
7:56
-0:26
40K
24.85 mi14:15:103:19:368:026:55
8:05
+0:09
25.2M
25.20 mi14:18:093:22:358:022:59
8:39
+0:34
Finish
26.22 mi14:26:013:30:278:027:52
7:43
-0:56

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

7:43 /mi

Average Pace

8:02 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:27:28

99% of race

Time at Steady Pace

2:59

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:02 /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 mi11:20:3425:008:0325:00
8:03
#14342
10K
6.21 mi11:45:1249:387:5924:38
7:56
#14300
15K
9.32 mi12:09:361:14:027:5724:24
7:51
#13930
20K
12.43 mi12:34:121:38:387:5624:36
7:55
#13601
Half
13.11 mi12:39:311:43:577:565:19
7:48
#13552
25K
15.53 mi12:58:402:03:067:5519:09
7:54
#13273
30K
18.64 mi13:24:132:28:397:5825:33
8:13
#13094
20M
20.00 mi13:35:322:39:588:0011:19
8:19
#13035
21M
21.00 mi13:43:512:48:178:018:19
8:19
#12754
35K
21.75 mi13:49:512:54:178:016:00
8:01
#12726
23M
23.00 mi14:00:193:04:458:0210:28
8:22
#12704
24M
24.00 mi14:08:153:12:418:027:56
7:56
#12595
40K
24.85 mi14:15:103:19:368:026:55
8:05
#12527
25.2M
25.20 mi14:18:093:22:358:022:59
8:39
#12489
Finish
26.22 mi14:26:013:30:278:027:52
7:43
#12388
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi143424229422913151(Top 49%)3572(Top 31%)3572(Top 73%)
10K6.21 mi3.10 mi14300+424226+34226+314237(Top 53%)4198(Top 37%)4198(Top 86%)
15K9.32 mi3.11 mi13930+3704018+2084018+20813151(Top 49%)3572(Top 31%)3572(Top 73%)
20K12.43 mi3.11 mi13601+3293845+1733845+17312776(Top 48%)3425(Top 30%)3425(Top 70%)
Half13.11 mi0.68 mi13552+493808+373808+3712724(Top 48%)3330(Top 29%)3330(Top 68%)
25K15.53 mi2.42 mi13273+2793664+1443664+14411921(Top 45%)3034(Top 27%)3034(Top 62%)
30K18.64 mi3.11 mi13094+1793609+553609+5512504(Top 47%)3465(Top 30%)3465(Top 71%)
20M20.00 mi1.36 mi13035+593590+193590+1912500(Top 47%)3591(Top 31%)3591(Top 74%)
21M21.00 mi1.00 mi12754+2813444+1463444+1469374(Top 35%)2099(Top 18%)2099(Top 43%)
35K21.75 mi0.75 mi12726+283442+23442+212305(Top 46%)3596(Top 31%)3596(Top 74%)
23M23.00 mi1.25 mi12704+223454-123454-1212320(Top 46%)3698(Top 32%)3698(Top 76%)
24M24.00 mi1.00 mi12595+1093409+453409+4510809(Top 41%)2988(Top 26%)2988(Top 61%)
40K24.85 mi0.85 mi12527+683390+193390+1910681(Top 40%)2985(Top 26%)2985(Top 61%)
25.2M25.20 mi0.35 mi12489+383377+133377+1310532(Top 40%)2958(Top 26%)2958(Top 61%)
Finish26.22 mi1.02 mi12388+1013341+363341+3610138(Top 38%)2769(Top 24%)2769(Top 57%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13151

Females

3572

F18-39

3572

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14237

Females

4198

F18-39

4198

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13151

Females

3572

F18-39

3572

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

12776

Females

3425

F18-39

3425

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

12724

Females

3330

F18-39

3330

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

11921

Females

3034

F18-39

3034

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

12504

Females

3465

F18-39

3465

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

12500

Females

3591

F18-39

3591

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9374

Females

2099

F18-39

2099

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12305

Females

3596

F18-39

3596

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

12320

Females

3698

F18-39

3698

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

10809

Females

2988

F18-39

2988

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10681

Females

2985

F18-39

2985

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10532

Females

2958

F18-39

2958

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10138

Females

2769

F18-39

2769

Passing Analysis

Category:
Athletes Passed
2667
Passed By
713
Net Change
+1954
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14342
5K → 10K300258+42#14342#14300
10K → 15K42151+370#14300#13930
15K → 20K36536+329#13930#13601
20K → Half6112+49#13601#13552
Half → 25K29617+279#13552#13273
25K → 30K27495+179#13273#13094
30K → 20M11960+59#13094#13035
20M → 21M2821+281#13035#12754
21M → 35K6335+28#12754#12726
35K → 23M9169+22#12726#12704
23M → 24M13324+109#12704#12595
24M → 40K8719+68#12595#12527
40K → 25.2M5012+38#12527#12489
25.2M → Finish12524+101#12489#12388
TOTALS2667713+1954
📊

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