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SF MARATHON 1ST HALF 2026

David Castleberry

Bib: 16534•M•Age: 45

SF, CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 6575
Gender (Male)
#0 / 3619
Masters (Masters Men)
#0 / 1030
Division (M45-49)
#0 / 220
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
11:13/mi
22:27
→ flat
4M
10:57/mi
44:20
↑ 67↓ 69
6M
10:42/mi
1:05:45
↑ 1231.1%
8M
10:39/mi
1:27:04
↑ 166↓ 531.1%
9.6M
10:39/mi
1:44:07
↑ 68↓ 1931.5%
10M
20:41/mi
1:52:23
↓ 241.1%
10.5M
5:36/mi
1:55:11
↓ 732.7%
12M
13:37/mi
2:15:36
↑ 2803.2%
Finish· 13.11 mi
10:08/mi
2:26:50
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:05:45
Pace10:58 /mi
2nd Half
Distance7.11 mi
Time1:21:05
Pace11:24 /mi
📊Positive Split: 23.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:08:2322:2711:1322:27
11:13
-
4M
4.00 mi07:30:1644:2011:0521:53
10:57
-0:16
6M
6.00 mi07:51:411:05:4510:5821:25
10:42
-0:15
8M
8.00 mi08:13:001:27:0410:5321:19
10:39
-0:03
9.6M
9.60 mi08:30:031:44:0710:5117:03
10:39
0:00
10M
10.00 mi08:38:191:52:2311:148:16
20:41
+10:02
10.5M
10.50 mi08:41:071:55:1110:582:48
5:36
-15:05
12M
12.00 mi09:01:322:15:3611:1820:25
13:37
+8:01
Finish
13.11 mi09:12:462:26:5011:1211:14
10:08
-3:29

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

5:36 /mi

Average Pace

11:12 /mi

Slowest Pace

20:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48

2% of race

Time at Steady Pace

1:55:21

79% of race

Time at Slower Pace

28:41

20% of race

Average Pace: 11:12 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi07:08:2322:2711:1322:27
11:13
#5068
4M
4.00 mi07:30:1644:2011:0521:53
10:57
#4529
6M
6.00 mi07:51:411:05:4510:5821:25
10:42
#4138
8M
8.00 mi08:13:001:27:0410:5321:19
10:39
#3808
9.6M
9.60 mi08:30:031:44:0710:5117:03
10:39
#3930
10M
10.00 mi08:38:191:52:2311:148:16
20:41
#3906
10.5M
10.50 mi08:41:071:55:1110:582:48
5:36
#3936
12M
12.00 mi09:01:322:15:3611:1820:25
13:37
#3635
Finish
13.11 mi09:12:462:26:5011:1211:14
10:08
#3563
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 60%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

11:04

Segment Time

12:18/mi

Pace

0.90 mi

Distance

Overall

3950

Men

2482

Division

136

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
2M2.00 mi2.00 mi506830581722423(Top 37%)1672(Top 46%)85(Top 39%)
4M4.00 mi2.00 mi4529+5392838+220154+184135(Top 63%)2648(Top 73%)146(Top 66%)
6M6.00 mi2.00 mi4138+3912653+185142+123567(Top 54%)2355(Top 65%)124(Top 56%)
8M8.00 mi2.00 mi3808+3302491+162134+83163(Top 48%)2159(Top 60%)118(Top 54%)
9.6M9.60 mi1.60 mi3930-1222541-50137-34711(Top 72%)2768(Top 76%)149(Top 68%)
10M10.00 mi0.40 mi3906+242515+26136+13858(Top 59%)2436(Top 67%)134(Top 61%)
10.5M10.50 mi0.50 mi3936-302531-16137-14615(Top 70%)2813(Top 78%)161(Top 73%)
12M12.00 mi1.50 mi3635+3012379+152128+92423(Top 37%)1672(Top 46%)85(Top 39%)
Finish13.11 mi1.11 mi3563+722332+47125+33029(Top 46%)1979(Top 55%)97(Top 44%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 37%
~flat
+5ft-3ft

Overall

2423

Males

1672

M45-49

85

2M→4M

2.0 - 4.0 mi

Top 63%
×4story building
+67ft-69ft

Overall

4135

Males

2648

M45-49

146

4M→6M

4.0 - 6.0 mi

Top 54%
×9story building
+123ft-9ft

Overall

3567

Males

2355

M45-49

124

6M→8M

6.0 - 8.0 mi

Top 48%
×12story building
+166ft-53ft

Overall

3163

Males

2159

M45-49

118

8M→9.6M

8.0 - 9.6 mi

Top 72%
×13story building
+68ft-193ft

Overall

4711

Males

2768

M45-49

149

9.6M→10M

9.6 - 10.0 mi

Top 59%
×2story building
+0ft-24ft

Overall

3858

Males

2436

M45-49

134

10M→10.5M

10.0 - 10.5 mi

Top 70%
×6story building
+1ft-73ft

Overall

4615

Males

2813

M45-49

161

10.5M→12M

10.5 - 12.0 mi

Top 37%
×21story building
+280ft-26ft

Overall

2423

Males

1672

M45-49

85

12M→Finish

12.0 - 13.1 mi

Top 46%
×7story building
+14ft-89ft

Overall

3029

Males

1979

M45-49

97

Passing Analysis

Category:
Athletes Passed
1848*
Passed By
343
Net Change
+1505
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#5068
2M → 4M56930+539#5068#4529
4M → 6M405*14+391#4529#4138
6M → 8M359*29+330#4138#3808
8M → 9.6M51173-122#3808#3930
9.6M → 10M6137+24#3930#3906
10M → 10.5M434-30#3906#3936
10.5M → 12M313*12+301#3936#3635
12M → Finish86*14+72#3635#3563
TOTALS1848*343+1505

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events