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BOSTON MARATHON 2024

Crystal Kelm

Bib: 19605•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 43%
Masters (Masters Women)
#0 / 6263
Top 32%
Division (F45-49)
#0 / 1753
Top 40%
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
8:21/mi
25:55
↑ 97↓ 3451.5%
10K· 6.21 mi
8:17/mi
51:39
↑ 79↓ 1380.4%
15K· 9.32 mi
8:17/mi
1:17:24
↑ 67↓ 78
20K· 12.43 mi
8:21/mi
1:43:21
↑ 106↓ 860.1%
Half· 13.11 mi
8:18/mi
1:49:01
↑ 19↓ 370.5%
25K· 15.53 mi
8:26/mi
2:09:28
↑ 66↓ 880.2%
30K· 18.64 mi
8:55/mi
2:37:11
↑ 181↓ 1480.2%
20M
9:02/mi
2:49:28
↑ 64↓ 500.2%
21M
9:36/mi
2:59:04
↑ 106↓ 241.6%
35K· 21.75 mi
9:21/mi
3:06:04
↑ 17↓ 861.7%
23M
9:25/mi
3:17:51
↑ 23↓ 630.6%
24M
9:18/mi
3:27:09
↓ 821.3%
40K· 24.85 mi
9:23/mi
3:35:10
↓ 200.3%
25.2M
10:21/mi
3:38:44
↑ 13↓ 160.2%
Finish· 26.22 mi
8:45/mi
3:47:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:01
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time1:58:38
Pace9:03 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:5625:558:2125:55
8:21
-
10K
6.21 mi11:44:4051:398:1925:44
8:17
-0:04
15K
9.32 mi12:10:251:17:248:1825:45
8:17
0:00
20K
12.43 mi12:36:221:43:218:1925:57
8:21
+0:04
Half
13.11 mi12:42:021:49:018:195:40
8:18
-0:03
25K
15.53 mi13:02:292:09:288:2020:27
8:26
+0:08
30K
18.64 mi13:30:122:37:118:2627:43
8:55
+0:29
20M
20.00 mi13:42:292:49:288:2812:17
9:02
+0:07
21M
21.00 mi13:52:052:59:048:329:36
9:36
+0:34
35K
21.75 mi13:59:053:06:048:337:00
9:21
-0:15
23M
23.00 mi14:10:523:17:518:3611:47
9:25
+0:04
24M
24.00 mi14:20:103:27:098:389:18
9:18
-0:07
40K
24.85 mi14:28:113:35:108:398:01
9:23
+0:05
25.2M
25.20 mi14:31:453:38:448:413:34
10:21
+0:58
Finish
26.22 mi14:40:403:47:398:418:55
8:45
-1:36

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

8:17 /mi

Average Pace

8:41 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:28

57% of race

Time at Steady Pace

48:55

21% of race

Time at Slower Pace

49:16

22% of race

Average Pace: 8:41 /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 mi11:18:5625:558:2125:55
8:21
#16889
10K
6.21 mi11:44:4051:398:1925:44
8:17
#16426
15K
9.32 mi12:10:251:17:248:1825:45
8:17
#15953
20K
12.43 mi12:36:221:43:218:1925:57
8:21
#15363
Half
13.11 mi12:42:021:49:018:195:40
8:18
#15329
25K
15.53 mi13:02:292:09:288:2020:27
8:26
#14845
30K
18.64 mi13:30:122:37:118:2627:43
8:55
#14415
20M
20.00 mi13:42:292:49:288:2812:17
9:02
#14224
21M
21.00 mi13:52:052:59:048:329:36
9:36
#14010
35K
21.75 mi13:59:053:06:048:337:00
9:21
#14034
23M
23.00 mi14:10:523:17:518:3611:47
9:25
#13965
24M
24.00 mi14:20:103:27:098:389:18
9:18
#13928
40K
24.85 mi14:28:113:35:108:398:01
9:23
#13854
25.2M
25.20 mi14:31:453:38:448:413:34
10:21
#13819
Finish
26.22 mi14:40:403:47:398:418:55
8:45
#13759
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi168896094609415211(Top 60%)5090(Top 47%)5090(Top 290%)
10K6.21 mi3.10 mi16426+4635815+2795815+27916025(Top 63%)5547(Top 51%)5547(Top 316%)
15K9.32 mi3.11 mi15953+4735533+2825533+28215211(Top 60%)5090(Top 47%)5090(Top 290%)
20K12.43 mi3.11 mi15363+5905176+3575176+35714007(Top 55%)4432(Top 41%)4432(Top 253%)
Half13.11 mi0.68 mi15329+345162+145162+1414664(Top 57%)4848(Top 44%)4848(Top 277%)
25K15.53 mi2.42 mi14845+4844902+2604902+26012731(Top 50%)3901(Top 36%)3901(Top 223%)
30K18.64 mi3.11 mi14415+4304729+1734729+17312853(Top 50%)4204(Top 38%)4204(Top 240%)
20M20.00 mi1.36 mi14224+1914666+634666+6312341(Top 48%)4210(Top 39%)4210(Top 240%)
21M21.00 mi1.00 mi14010+2144604+624604+6211316(Top 44%)3905(Top 36%)3905(Top 223%)
35K21.75 mi0.75 mi14034-244646-424646-4214955(Top 59%)5813(Top 53%)5813(Top 332%)
23M23.00 mi1.25 mi13965+694663-174663-1713126(Top 51%)4971(Top 46%)4971(Top 284%)
24M24.00 mi1.00 mi13928+374689-264689-2613547(Top 53%)5200(Top 48%)5200(Top 297%)
40K24.85 mi0.85 mi13854+744692-34692-312619(Top 49%)4844(Top 44%)4844(Top 276%)
25.2M25.20 mi0.35 mi13819+354687+54687+512285(Top 48%)4746(Top 43%)4746(Top 271%)
Finish26.22 mi1.02 mi13759+604686+14686+112929(Top 51%)4932(Top 45%)4932(Top 281%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

15211

Females

5090

F45-49

5090

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

16025

Females

5547

F45-49

5547

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

15211

Females

5090

F45-49

5090

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

14007

Females

4432

F45-49

4432

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

14664

Females

4848

F45-49

4848

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

12731

Females

3901

F45-49

3901

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

12853

Females

4204

F45-49

4204

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

12341

Females

4210

F45-49

4210

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11316

Females

3905

F45-49

3905

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

14955

Females

5813

F45-49

5813

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13126

Females

4971

F45-49

4971

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

13547

Females

5200

F45-49

5200

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

12619

Females

4844

F45-49

4844

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12285

Females

4746

F45-49

4746

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

12929

Females

4932

F45-49

4932

Passing Analysis

Category:
Athletes Passed
3883
Passed By
753
Net Change
+3130
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16889
5K → 10K563100+463#16889#16426
10K → 15K52148+473#16426#15953
15K → 20K61121+590#15953#15363
20K → Half5723+34#15363#15329
Half → 25K50622+484#15329#14845
25K → 30K50676+430#14845#14415
30K → 20M23645+191#14415#14224
20M → 21M24834+214#14224#14010
21M → 35K6993-24#14010#14034
35K → 23M15485+69#14034#13965
23M → 24M11578+37#13965#13928
24M → 40K12652+74#13928#13854
40K → 25.2M5823+35#13854#13819
25.2M → Finish11353+60#13819#13759
TOTALS3883753+3130
📊

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